antennas and transmission lines - general Title Author Page Issue ----- ------ ---- ----- 7/8-inch hardline coax connectors- construct WA5FAC 95 Sep 88 at your own low cost Antenna and control-link calculations for W7PUG 58 Nov 73 repeater licensing Antenna and control-link calculations for Short circuit 59 Dec 73 repeater licensing Antenna and feedline facts and fallacies W5JJ 24 May 73 Antenna Array Patterns with a Personal KC7MT 59 Feb 89 Computer Antenna control, automatic azimuth/elevation WA3HLT 26 Jan 75 for satellite communications Antenna control, automatic azimuth/elevation Correction 58 Dec 75 for satellite communications Antenna design, programmable calculator W3DVO 70 May 74 simplifies (HN) Antenna dimension (HN) WA9JMY 66 Jun 70 Antenna gain (letter) W3AFM 62 May 76 Antenna gain and directivity W2PV 12 Aug 79 Antenna gain, measuring K6JYO 26 Jul 69 Antenna geometry for optimum performance N4HI 60 May 82 Antenna insulators, PTFE VHF W5JTL 98 Oct 85 Antenna parameters, equations for determining KG6B 40 Mar 82 Antenna relay sequencing KN5S 17 Oct 87 Antenna restrictions (letter) K3SRO 6 Nov 81 Antenna restrictions: another solution N4AQD 46 Jun 80 Antenna support (HN) W6XM 64 Jun 84 Antenna switching, solid state W2EEY 30 Nov 68 Antenna wire, low-cost copper (HN) W2EUQ 73 Feb 77 Antennas and capture area K6MIO 42 Nov 69 Antennas, GFI, Capacitors, and Fundamentals W6SAI 57 Dec 89 Anti-QRM methods W3FQJ 50 May 71 Applied Yagi antenna design, part 2: 220 MHz WB3BGU 33 Jun 84 and the Greenblum design data Balun chop suey K4KJ 113 May 85 Battle of the Beams-pt 1 G4GVO 29 Jun 89 Battle of the Beams-pt 2 G4GVO 20 Aug 89 Battle of the Beams-pt 3 G4GVO 53 Oct 89 Beam antenna mast lock W4KV 68 Jun 81 Best way to get an antenna into a tree (HN) WA5VLX 84 Mar 81 Bridge for antenna measurements, simple W2CTK 34 Sep 70 Bulkhead connector (HN) K9CZB 78 Apr 85 Bulkhead connector (HN) Short circuit 74 Jul 85 Coaxial connections, sealing (HN) W5XW 64 Mar 80 Coaxial connections, sealing (HN) Letter, K7ZFG 6 Oct 80 Common-point Grounding: Lightning Protection K1ZJH 24 Jul 89 for Repeaters Compact travel antenna K1BQT 29 Jun 87 Computerizing Smith Chart Network Analysis N1AYW 10 Oct 89 Computerizing Smith Chart Network Analysis Short circuit 10 Jan 90 Construction techniques using PVC pipe to W2OQI 98 Sep 88 make antennas Cubical quad measurements W4YM 42 Jan 69 De-icing the quad (HN) W5TRS 75 Aug 80 Design Data for Pipe Masts W4MB 38 Jul 89 Dipole antenna length reference chart (HN) W6XM 75 Oct 81 Dipole center insulator (HN) WA1ABP 69 May 69 Direction-finding tool, the fox box K1ZJH 25 Oct 85 Diversity receiving system W2EEY 12 Dec 71 Dummy load and rf wattmeter, low-power W2OLU 56 Apr 70 Dummy load, low-power vhf WB9DNI 40 Sep 73 Dummy loads, experimental W8YFB 36 Sep 68 Earth anchors for guyed towers W5QJR 60 May 80 Easy measurement of antenna currents (HN) KO1F 39 Sep 88 Effective radiated power (HN) VE7CB 72 May 73 Elmer's notebook: Standing wave ratio - what W1SL 98 Feb 88 does it mean? Feedpoint impedance characteristics of W5JJ 50 Dec 73 practical antennas Ferrite Beads as Antenna and Tower Guy W4MB 72 Apr 89 lsolators(HN) Filters, low-pass, for 10 and 15 W2EEY 42 Jan 72 Gain calculations, simplified W1DTV 78 May 78 Gain vs antenna height, calculating WB8IFM 54 Nov 73 Gdo, new uses for K2ZSQ 48 Dec 68 Gin pole, simple lever for raising masts WA2ANU 72 May 77 Ground current measuring on 160-meters W0KUS 46 Jun 79 Ground rod resistance K4MT 95 Jul 84 Ground rod resistance Comments 8 Sep 84 Ground rods (letter) W7FS 66 May 71 Ground screen, alternative to radials WB0JGP 22 May 77 Ground systems (letter) ZL2BJR 6 Nov 80 Ground systems, installing effective KR7L 67 Sep 83 Ground systems, vertical antenna W7LR 30 May 74 Grounding, safer (letter) WA5KTC 59 May 72 Groundplane antenna Comments: 6 Jun 87 DJ0TR/OE8AK Groundplane antenna Comments: W6BCX 6 Oct 87 Half-delta loop VE2CV 37 May 82 Ham radio techniques W6SAI 75 Nov 84 Ham radio techniques W6SAI 67 Dec 84 Ham Radio techniques: A look at the W6SAI 38 Oct 88 groundplane antenna Ham Radio Techniques: antenna gain W6SAI 30 Jan 90 Ham Radio Techniques: Antenna Projects for W6SAI 55 Apr 89 Spring Ham radio techniques: antenna systems W6SAI 55 May 87 Ham Radio Techniques: Antenna Time W6SAI 74 May 89 Ham Radio Techniques: The MN analysis W6SAI 34 Feb 90 program, (that was then, this is now) Headings, beam antenna W6FFC 64 Apr 71 Homebrew antenna mount W6QIR 35 May 87 Hook, line 'n sinker (HN) WA4NED 76 Sep 68 Horizontal or vertical (HN) W7IV 62 Jun 72 Impedance measurements, nonresonant antenna W7CSD 46 Apr 74 Insulators, homemade antenna (HN) W7ZC 70 May 73 Isotropic source and practical antennas K6FD 32 May 70 Leyden's magic jar: the derivation of the KR6A 24 Oct 84 Hertzian and Marconi antennas Light-bulb dummy loads (HN) W6HPH 74 Oct 81 Lightning protection K9MM 18 Dec 78 Lightning protection Comments, W2FBL 6 Jul 79 Lightning protection Comments, W6RTK 6 Jul 79 Lightning protection Letter, K9MM 12 Dec 79 Lightning protection (C&T) W1DTY 50 Jun 76 Line-of-sight distance, calculating WB5CBC 56 Nov 76 Measurement techniques for antennas and W4OQ 36 May 74 transmission lines Measuring antenna gain K6JYO 26 Jul 69 Mobile Antenna Anti-rotate Device W1OLP 40 May 89 Mobile mount, rigid (HN) VE7ABK 69 Jan 73 More on elevated radials: HH Beverage's 1921 W6VX 57 Jun 90 Counterpoise System (HN) Neglected antenna for 40 and 80 meters W0WL 44 Jan 82 Neglected antenna for 40 and 80 meters Comments, W0WL 8 May 82 Power in reflected waves Woods 49 Oct 71 Practically Speaking: Antenna System K4IPV 82 Feb 89 Instruments Practically Speaking: RF Wattmeters and K4IPV 75 Mar 89 Antenna VSWR Meters Practically speaking: using antenna noise K4IPV 69 May 86 bridge Preamplifiers, Active antenna R W. Burhans 47 May 86 Radials, installing, for vertical antennas K3ZAP 56 Oct 80 Rain static resolved W1FYX 83 Sep 83 Reflected power, some reflections on VE3AAZ 44 May 70 Reflectometers K1YZW 65 Dec 69 Remote Control Switching System VK2WD 62 Oct 89 Remote Driver/Controller for a Two-antenna NH6N 79 Apr 89 System Rf current probe (HN) W6HPH 76 Oct 68 RF power meter, low-level W5WGF 58 Oct 72 Sampling network, rf - the milli-tap W6QJW 34 Jan 73 Scaling antenna elements W7ITB 58 Jul 79 Secrets of successful low-band operation: K2RR 16 May 86 part1 Secrets of successful low-band operation: K2RR 17 Jun 86 part2 Smith chart, how to use W1DTY 16 Nov 70 Smith chart, how to use Correction 76 Dec 71 Smith chart, numerical W8MQW 104 Mar 78 Solid-state T-R switch for tube transmitters K1MC 58 Jun 80 Standing-wave ratios, importance of W2HB 26 Jul 73 Standing-wave ratios, importance of Correction: 67 May 74 letter Static mystery HB9FU 85 Jul 83 T-R switch K3KMO 61 Apr 69 The bi-square array N4LBJ 42 May 90 The Zepp (letter) W2RHQ 63 Aug 82 Time-domain reflectometry, practical WA0PIA 22 May 71 experimenter's approach Vertical antenna, folded umbrella, top-loaded VE2CV 12 Sep 82 Vertical-vee, converting (letter) KA5KWV 8 Sep 82 VHF/UHF world W1JR 110 May 84 VHF/UHF world W1JR 77 Sep 86 Voltage-probe antenna W1DTY 20 Oct 70 VSWR and power meter, automatic W0INK 34 May 80 Wattmeter, low power (letter) W0DLQ 6 Jan 80 Wire plow, build a simple W7IV 107 May 84 Yagi design program W6NBI 6 May 87 Yagi vs Quad-part 1 K2SS 68 May 88 Yagi vs Quad-part 2 K2SS 78 Jun 88 Yagis, stacking is a science K1FO 18 May 88 antennas and transmission lines - high-frequency antennas Title Author Page Issue ----- ------ ---- ----- 12-Meter "Garage Plane"'Antenna W8PDV 32 Mar 89 14-MHz delta-loop array N2GW 16 Sep 78 160 meters with 40-meter vertical W2IMB 34 Oct 72 160-meter loop, receiving K6HTM 46 May 74 160-meter vertical, shortened (HN) W6VX 72 May 76 3-element Yagi design, key to K3OQF 48 Mar 84 3.5-MHz broadband antennas N6RY 44 May 79 3.5-MHz phased horizontal array K4JC 56 May 77 3.5-MHz sloping antenna array W2LU 70 May 79 3.5-MHz tree-mounted ground-plane K2INA 48 May 78 40, 80, and 160-meter vertical, remote W7LR 38 May 84 controlled 7-MHz antenna array K7CW 30 Aug 78 7-MHz rotary beam W7DI 34 Nov 78 7-MHz short vertical antenna W8TYX 60 Jun 77 80-meter half-wave sloper uses reflector (HN) KO1F 48 Oct 84 80-meter half-wave sloper uses reflector (HN) Short circuit 8 Feb 85 Active antenna, 0.5-30 MHz K1ZJH 37 May 85 Active antenna, 0.5-30 MHz Comment, Hansen, 10 Jul 85 R.C. Adding 10 MHz to the HyGain HyTower W5UOJ 38 May 89 Aligning Yagi beam elements (HN) WA2SON 92 May 81 All band antenna portable (HN) W2INS 68 Jun 70 All-band phased-vertical WA7GXO 32 May 72 Analyzing 80-meter delta loop arrays K1GQ 10 Sep 86 Antenna potpourri W3FQJ 54 May 72 Antenna systems for 80 and 40 meters K6KA 55 Feb 70 Antenna, 3.5 MHz, for a small lot W6AGX 28 May 73 Applied Yagi antenna design, part 6: the WB3BGU 89 Oct 84 model and a special teaching tool Army loop antenna - revisited W3FQJ 59 Sep 71 Army loop antenna - revisited Added notes 64 Jan 72 Base-loaded vertical antenna for 160 meters W6XM 64 Aug 80 Beam antenna, improved triangular shaped W6DL 20 May 70 Beam for ten meters, economical W1FPF 54 Mar 70 Beverage antenna W3FQJ 67 Dec 71 Beverage antenna for 40 meters KG6RT 40 Jul 79 Big beam for 10 meters K6KA 32 Mar 68 Big quad - small yard W6SUN 56 May 80 Bobtail curtain and inverted ground plane: Comments, WA7BPO 82 Feb 83 part1 Bobtail curtain and inverted ground plane: W6BCX 82 Feb 83 part1 Bobtail curtain and inverted ground plane: Short circuit 92 Nov 83 part1 Bobtail curtain and inverted ground plane: W6BCX 28 Mar 83 part2 Bobtail curtain and inverted ground plane: Short circuit 16 May 83 part2 Bobtail curtain and inverted ground plane: Comments, WA7BPO 12 Jul 83 part2 Bobtail curtain array W8YFB 81 May 77 Bobtail curtain array, forty-meter VE1TG 58 Jul 69 Butterfly beam W1XU 30 May 81 Capacitively loaded dipole, high-performance W6VX 33 May 84 Coaxial dipole antenna, analysis of W2DU 46 Aug 76 Coaxial dipole, multiband (HN) W4BDK 71 May 73 Collapsible Quad for 10-Meter Hilltopping W4RNL 70 Nov 89 Collinear, six-element for W0YBF 22 May 76 Compact antennas for 20 meters W4ROS 38 May 71 Compact loop antenna for 80 and 40 meters W6TC 24 Oct 79 Converted-vee, 80 and 40 meter W6JKR 18 Dec 69 Convoluted Loop, The W5QJR 89 Apr 89 Corner-fed loop, low frequency ZL1BN 30 Apr 76 Corner-fed loop, low frequency installation 41 Feb 77 modified Cubical quad, improved low-profile, three W1HXU 25 May 76 band Cubical quad, three-band W1HXU 22 Jul 75 Cubical-quad antenna design parameters K6OPZ 55 Aug 70 Cubical-quad antennas, mechanical design of VE3II 44 Oct 74 Cubical-quad antennas, unusual W1DTY 6 May 70 Curtain antenna (HN) W4ATE 66 May 72 De-icing the quad (HN) W5TRS 75 Aug 80 Debunking myths (letter) WB9VWA 8 Mar 83 Delta loop, the reduced-size, full- G3TKN 67 Jan 85 performance, corner-fed Delta loop, top-loaded W1DTY 57 Dec 78 Designing trap antennas: a new approach W0JF 60 Aug 87 Designing Yagis with the Commodore 64 N0CAO 107 Jan 86 Dipole antenna over sloping ground N4HI 18 May 82 Dipole antenna, trimming the (HN) W5NPD 69 Jul 81 Dipole antennas on non-harmonic frequencies W2CTK 72 Mar 69 (HN) Dipole beam W3FQJ 56 Jun 74 Dipole pairs, low SWR W6FPO 42 Oct 72 Dipole sloping inverted-vee W6NIF 48 Feb 69 Dipole, all-band tuned ZS6BT 22 Oct 72 Double bi-square array W6FFF 32 May 71 Dual-band antennas, compact W6SAI 18 Mar 70 DX antenna, single-element W6FHM 52 Dec 72 DX antenna, single-element Performance: 65 Oct 73 letter Easy Antenna Access for Urban Apartment NU1N 18 Apr 89 Dwellers, The Weekender: Elmer's notebook: ten-meter skyware W1SL 90 Jul 88 End-fed 8JK; switchable vertical array W1JF 53 May 85 Five-band dipole W6HPH 76 Sep 88 Fold wire Fed Top-Loaded Grounded Vertical K3OOF 32 May 89 Folded end-fire radiator N7WD 44 Oct 80 Folded mini-monopole antenna W6SAI 32 May 68 Folded umbrella antenna WB5IIR 38 May 79 Four-band wire antenna W3FQJ 53 Aug 75 Four-vertical collinear element 20-meter WA8DXB 57 May 83 array Ground plane, three-band LA1EI 6 May 72 Ground plane, three-band Footnote: letter 65 Oct 72 Ground plane, three-band Correction 91 Dec 72 Ground systems for vertical antennas WD8CBJ 31 Aug 79 Ground-mounted vertical antennas W7DHD, K3BN 11 Jun 90 Ground-mounted vertical for the lowerbands, W5NPD 68 Nov 80 improved (HN) Ground-plane antenna: history and development K2FF 26 Jan 77 Ground-plane, multiband (HN) JA1QIY 62 May 71 Grounded monopole with elevated feed VE2CV 87 May 83 Half-square antenna, the N0AN 48 Dec 81 Half-square antenna, the Short circuit 79 Oct 82 Half-wave vertical VE2CV 36 Sep 81 Ham radio techniques W6SAI 32 Sep 81 Ham radio techniques (01/84) W6SAI 65 Jan 84 Ham radio techniques (01/84) Comments, WA2DRL 8 Sep 84 Ham radio techniques (02/84) W6SAI 63 Feb 84 Ham radio techniques (02/84) Comments, K4KYV 12 May 84 Ham radio techniques (02/84) Comments, WD6DUD 8 Sep 84 Ham radio techniques (02/84) Comments, AD1G 8 Dec 84 Ham radio techniques (03/84) W6SAI 53 Mar 84 Ham radio techniques (04/84) W6SAI 76 Apr 84 Ham radio techniques (07/84), 160 redux W6SAI 89 Jul 84 Ham radio techniques (07/87): 80-meter W6SAI 57 Jul 87 antenna, 160-meter discone antenna Ham radio techniques (08/84) W6SAI 96 Aug 84 Ham radio techniques (09/87): antennas W6SAI 57 Sep 87 Ham radio techniques (10/84) W6SAI 106 Oct 84 Ham radio techniques (12/85) W6SAI 55 Dec 85 Ham radio techniques, fifty years ago W6SAI 58 Jun 84 Ham Radio techniques: "radio ground" on 160 W6SAI 53 Mar 88 meters Ham Radio Techniques: 160-meter antenna W6SAI 49 Mar 90 problems and solutions Ham Radio techniques: a nifty bi-square a W6SAI 68 Jun 88 beam for 10 or 12 meters HAM Radio Techniques: The Log Periodic W6SAI 20 Sep 89 Antenna Family Ham radio techniques: time and frequency W6SAI 37 Jun 87 station WWVS, minibeam design, etc Ham Radio techniques: why not a two-element W6SAI 36 May 88 Yagi Helical whip for RV and mobile use W0BHG 24 May 90 (Weekender) HF antenna (HN) W2GQK 22 Jul 83 HF Mobile Antenna NC0B 9 Sep 89 HF mobile antennas, another look at W5FG 12 Mar 90 (Weekender) High Performance Duoband Yagi for 15 and 20 KN2M 41 Aug 89 meters High-frequency amateur antennas W2WLR 28 Apr 69 High-frequency diversity antennas W2WLR 28 Oct 69 High-frequency Yagi antennas, understacking W1XT 62 Jun 80 High-gain phased array, experimental KL7IEH 44 May 80 High-gain phased array, experimental Short circuit 67 Sep 80 Horizontal antennas, optimum height for W7LR 40 Jun 74 Horizontal antennas, vertical radiation WA9RQY 58 May 74 patterns Horizontal-antenna gain at selected vertical W7LR 54 Feb 76 radiation angles How high should your HF antenna be? W5QJR 89 May 86 Inexpensive triband mobile antenna AD5X 62 May 90 (Weekender) Inverted 'L' limited space (HN) W8FR 63 Jun 84 Inverted V or delta loop, how to add to tower K4DJC 32 Jul 76 Inverted-vee antenna (letter) WB6AQF 66 May 71 Inverted-vee antenna, modified W2KTW 40 Oct 71 Inverted-vee Installation, Improved low-band W9KNI 68 May 76 (HN) JR vari-lobe antenna, control your take-off W1JF 46 May 85 angle Junk-box portable antenna W3SMT 24 Oct 81 K4EF Long Wire Antenna Designs K4EF 32 Sep 89 K7CW quad K7CW 36 Sep 82 Large vertical, 160 and 180 meters W7IV 8 May 75 Log periodic design W6PYK, W4AEO 34 Dec 79 Log-periodic antenna, 14, 21 and 28 MHz W4AEO 18 Aug 73 Log-periodic antennas for high-frequency W4AEO, W6PYK 67 Jan 80 Amateur bands Log-periodic antennas, 7-MHz W4AEO 16 May 73 Log-periodic antennas, feed system for W4AEO 30 Oct 74 Log-periodic antennas, graphical design W4AEO 14 May 75 method for Log-periodic antennas, vertical monopole, W4AEO 44 Sep 73 3.5 and 7.0 MHz Log-periodic beam, 15 and 20 meters W4AEO 6 May 74 Log-periodic beams, improved (letter) W4AEO 74 May 75 Log-periodic feeds (letter) W4AEO 66 May 74 Log-periodic fixed-wire beams for 40 meters W4AEO, W6PYK 26 Apr 80 Log-periodic fixed-wire beams for 75-meter DX W4AEO, W6PYK 40 Mar 80 Log-periodic, three-band W4AEO 28 Sep 72 Log-Yagis simplified W3EB 78 May 83 Longwire antenna. new design K4EF 10 May 77 Longwire multiband antenna W3FQJ 28 Nov 69 Loop antenna, compact (letter) W6WR 6 Feb 80 Loop antennas W4OQ 18 Dec 76 Loop receiving antenna W2IMB 66 May 75 Loop receiving antenna Correction 58 Dec 75 Loop-yagi antennas VK2ZTB 30 May 76 Low-band antenna problem, solution to W8YFB 46 Jan 78 Low-mounted antennas W3FQJ 66 May 73 Making verticals quieter WA6RYZ 98 Jun 83 Matching dipoles (letter) W5XW 8 Aug 85 Mobile antenna, helically wound ZE6JP 40 Dec 72 Mobile color code (letter) WB6JFD 90 Jan 78 Mobile high-frequency antenna, refinements to W3NZ 34 Jun 81 Mobile vertical, 20-meter K9CZB 26 May 83 Modified Bobtail (HN) W0MBP 87 Sep 84 Mono-loop antenna (HN) W8BW 70 Sep 69 Multiband 8JK, an end-fed G3SBA 81 May 84 Multiband antenna system VK2AOU 62 May 79 Multiband dipoles for portable use W6SAI 12 May 70 Multiband vertical antenna system W0NCU 28 May 78 N5NBU "Nice But Ugly $1.29 Antenna" N5NBU 39 May 89 New class of directive antennas W4MB 107 Apr 86 New class of directive antennas Comment, AG4R 9 Jul 86 No-compromise, multiband, low VSWR dipole GM3HAT 69 May 87 NO5H All-Band Dipole NO5H 82 Jun 89 Nonresonant delta and V beam antennas KL7ISA 49 May 90 Odd antennas, comments W9RXC 9 Aug 86 Offset drooper: an improved ground plane W6BCX 43 Feb 86 Old antennas, comments W0MBP 9 Feb 86 Open quad antenna I2RR 36 Jul 80 Optimizing gain on Yagi antennas K2SS 21 Mar 88 Phased antenna (letter) Thacker, Jerry 6 Oct 78 Phased array, design your own K1AON 78 May 77 Phased array, electrically-controlled W5TRS 52 May 75 Phased arrays, feeding: an alternative method KB8I 58 May 85 Phased arrays, feeding: an alternative method Short circuit 74 Jul 85 Phased vertical antenna for 21 MHz W6XM 42 Jun 80 Phased vertical array, fine tuning W4FXE 46 May 77 Phased vertical array, four-element W8HXR 24 May 75 Phased vertical arrays, pattern calculations WB5HGR 40 May 81 for Practically Speaking: High Frequency Dipole K4IPV 92 May 89 Antenna-pt 1 Practically Speaking: High-Frequency Dipole K4IPV 53 Jun 89 Antenna-pt 2 Practically Speaking: Vertically Polarized K4IPV 71 Aug 89 HF Antennas-pt 1 Practically Speaking: Vertically Polarized K4IPV 45 Sep 89 HF Antennas-pt 2 Practically Speaking: Vertically Polarized K4IPV 81 Oct 89 HF Antennas-pt 3 Pt. I Yagi antenna design: performance W2PV 23 Jan 80 calculations Pt. I Yagi antenna design: performance Short circuit 66 Sep 80 calculations Pt. II Yagi antenna design: experiments W2PV 19 Feb 80 confirm computer analysis Pt. III Yagi antenna design: performance of W2PV 18 May 80 multi-element simplistic beams Pt. IV Yagi antenna design: multi-element W2PV 33 Jun 80 simplistic beams Pt. IX Yagi antennas: practical designs W2PV 30 Dec 80 Pt. V Yagi antenna design: optimizing W2PV 18 Jul 80 performance Pt. VI Yagi antenna design: quads and quagis W2PV 37 Sep 80 Pt. VII Yagi antenna design: ground or earth W2PV 29 Oct 80 effects Pt. VIII Yagi antenna design: stacking W2PV 22 Nov 80 PV-4 on Your Commodore WA3EKL 64 Oct 89 PV-4 on Your Commodore Short circuit 64 Jan 90 Quad antenna, modified ZF1MA 68 Sep 78 Quad antenna, multiband DJ4VM 41 Aug 69 Quad antenna, repairs (HN) K9MM 87 May 78 Quad antenna: part 1-general concepts W4MB 43 May 88 Quad antenna: part 2-circular and octagonal W4MB 54 Jun 88 loops Quad antenna: part 3-circular loop and W4MB 34 Aug 88 octagonal arrays Quad for 7-28 MHz W3NZ 12 Nov 80 Quad owner switches N6NB, W6AQ 12 May 82 Quad owner switches Comments, W6BQD 8 Dec 82 Quad variations, more (HN) W5TRS 72 Oct 80 Quad variations, more (HN) Short circuit 70 Feb 82 Quad, three-element switchable, for 40 meters N8ET 26 Oct 80 Quad, three-element, for 15-20 meters using W4OVO 12 May 80 circular elements Quads vs Yagis revisited N6NB 12 May 79 Quads vs Yagis revisited Comments, 80 Oct 79 WB6MMV, N6NB Receiving antennas K6ZGQ 56 May 70 Rhombics, controlled vertical radiation, N4UH 100 Mar 85 part 1: designing for high performance Rhombics, controlled vertical radiation, N4UH 99 Apr 85 part 2: antenna erection and performance Rotatable trap dipole for 12 and 17 meters KD9SV 22 May 90 Satellite antenna, simple (HN) WA6PXY 59 Feb 75 Secrets of successful low-band operation: K2RR 16 May 86 part1 Secrets of successful low-band operation: K2RR 17 Jun 86 part2 SEED antenna: a short, efficient end-fed W4JAZ 103 Sep 84 dipole Selective antenna system minimizes unwanted W5TRS 28 May 76 signals Selective receiving antennas W5TRS 20 May 78 Short antennas, efficiency of W1GV/4 18 Sep 82 Short vertical antennas for low bands: part1 W7DHD 36 May 83 Short vertical antennas for low bands: part2 W7DHD 17 Jun 83 Shortened 40-meter four-element sloping OE5CWL 74 May 88 dipole array Shunt-fed tower (HN) N6HZ 74 Nov 79 Shunt-feed systems for grounded vertical W4OQ 34 May 75 radiators, how to design Simple 1-, 2- and 3-band antennas W9EGQ 54 Jul 68 Simple antennas for 40 and 80 W5RUB 16 Dec 72 Six-element wide-beam for 10 (ham radio W6SAI 30 Dec 81 techniques) Sloping dipoles W5RUB 19 Dec 72 Sloping dipoles Performance: 76 May 73 letter Small beams, high performance G6XN 12 Mar 79 Small-loop antennas W4YOT 36 May 72 Stagger-tuned dipoles increase band-width K4MT 22 May 83 Stressed quad (HN) W5TIU 40 Sep 78 Structural evaluation of Yagi elements K5IU 29 Dec 88 Stub bandswitched antennas W2EEY 50 Jul 69 Suitcase antenna, high-frequency VK5BI 61 May 73 Suspended long Yagi (ham radio techniques) W6SAI 34 Nov 81 Tailoring your antenna, how to KH6HDM 34 May 73 Tapered vertical, calculating the input K3OQF 24 Aug 85 impedance of Tapered vertical, calculating the input Short circuit 78 Oct 88 impedance of Telephone-wire antenna (HN) K9TBD 70 May 76 Terminated vee beam, sloping Ross, Robert 71 May 85 TH3 juniour drooping, stop your (HN) VK6SY 30 Feb 90 The bi-square array N4LBJ 42 May 90 The Gottingen heart antenna K3OQF 11 May 90 The K2GNC Giza beam K2GNC 52 May 81 Three Element Vertical Driven Array For 10 WB5IRI 22 Oct 89 Meters Three-band ground plane W6HPH 32 Oct 68 Three-band sloper for 7, 18 and 24 MHz (HN) W5FG 58 May 88 Top-loaded vertical, a high-efficiency W6US 65 Oct 84 Transmission line antenna, 160-meter N9NB 87 May 85 Trap antenna, design your own W4MB 37 Oct 84 Trapped antenna, trapping the mysteries of N3GO 10 Oct 81 Trapped antenna, trapping the mysteries of Comments, K9CZB 8 Feb 82 Traps and trap antennas W8FX 34 Aug 79 Triangle antennas W3FQJ 56 Aug 71 Triangle antennas W6KIW 58 May 72 Triangle antennas (letter) K4ZZV 72 Nov 71 Triangle beams W3FQJ 70 Dec 71 Triband Yagi beam (ham radio techniques) W6SAI 68 Jan 81 Tuning aid for the sightless (HN) W6VX 83 Sep 76 Two delta loops fed in phase W8HXR 60 Aug 81 Two single 80-meter radiators for short and YO4WU 98 Nov 88 long skip (HN) Two-element hf beams G6XN 8 May 87 Unidirectional antenna for the low-frequency GW3NJY 61 Jan 70 bands Vertical antenna for 40 and 75 meters W6PYK 44 Sep 79 Vertical antenna radiation patterns W7LR 50 Apr 74 Vertical antenna, low-band W4IYB 70 Jul 72 Vertical antenna, portable WA8NWL 48 Jun 78 Vertical antenna, three-band W9BQE 44 May 74 Vertical antennas, improving performance of K6FD 54 Dec 74 Vertical antennas, performance W7LR 34 Mar 74 characteristics Vertical beam antenna, 80 meter VE1TG 26 May 70 Vertical dipole, gamma-loop-fed W6SAI 19 May 72 Vertical for 80 meters, top-loaded W2MB 20 Sep 71 Vertical phased arrays: part1 K2BT 18 May 83 Vertical phased arrays: part1 Comments, W9OAM 10 Mar 84 Vertical phased arrays: part2 K2BT 25 Jun 83 Vertical phased arrays: part2 Comments, W9OAM 10 Mar 84 Vertical phased arrays: part3 K2BT 26 Jul 83 Vertical phased arrays: part3 Short circuit 70 Oct 83 Vertical phased arrays: part3 Comments, W9OAM 10 Mar 84 Vertical phased arrays: part4 K2BT 34 Oct 83 Vertical phased arrays: part4 Short circuit 11 Dec 83 Vertical phased arrays: part4 Comments, W9OAM 10 Mar 84 Vertical phased arrays: part5 K2BT 59 Dec 83 Vertical phased arrays: part5 Comments, W9OAM 10 Mar 84 Vertical phased arrays: part6 K2BT 45 May 84 Vertical radiators W4OQ 16 Apr 73 Vertical, top-loaded 80 meter VE1TG 48 Jun 69 Vertical-tower antenna system W4OQ 56 May 73 Verticals over REAL ground WB9VWA 35 Jan 84 Vibration Induced Yagi Fatique Failures K5IU 9 Aug 89 W2PV 80-meter quad K1GQ 56 May 86 WBJK antenna for 40, 30 and 20 meters N6YC 9 May 88 WBJK antenna, a new look at OD5CG 60 Jul 81 Whips and loops as apartment antennas W2EEY 80 Mar 68 Wilson Mark II and IV, modifications to (HN) W9EPT 89 Jan 80 Windom antenna (letter) K6KA 6 Nov 78 Windom antenna, four-band W4VUO 62 Jan 74 Windom antenna, four-band Correction: 74 Sep 74 letter Windom antennas K4KJ 10 May 78 Yagi beam elements, aligning (HN) WA2SON 79 Jan 81 Yagis, designing with the Commodore 64 WA3EKL 59 Jun 83 Yagis, stacking is a science K1FO 18 May 85 Zepp antenna, extended W6QVI 48 Dec 73 ZL special antenna, 10-meter, for indoor use K5AN 50 May 80 ZL special antenna, understanding the WA6TKT 38 May 76 antennas and transmission lines - vhf antennas Title Author Page Issue ----- ------ ---- ----- 10-GHz dielectric antenna (HN) WA4WDL 80 May 75 1296-MHz antenna, high-gain W3AED 74 May 78 1296-MHz Yagi array W3AED 70 May 75 144-MHz antenna, 5/8-wavelength built from WB4WSU 67 Jun 74 CB mobile whip (HN) 144-MHz collinear uses PVC pipe mast (HN) K8LLZ 66 May 76 144-MHz mobile antenna WD8QIB 68 May 79 144-MHz mobile antenna (HN) W2EUQ 80 Mar 77 144-MHZ vertical mobile antennas, 1/4 and W2LTJ, W2CQH 46 May 76 5/8 wavelength, test data on 144-MHz vertical, 5/8-wavelength K6KLO 40 Jul 74 144-MHZ, 5/8-wavelength vertical W1RHN 50 Mar 76 144-MHz, 5/8-wavelength, vertical antenna K4LPQ 42 May 76 for mobile 2-meter J-pole antenna, all-metal KD8JB 42 Jul 84 2-meter J-pole antenna, all-metal Comments, K2WWT, 8 Feb 85 KD8JB 2-meter J-pole antenna, all-metal Comments, 8 Nov 85 DJ0TR/OE8AK 2-meter V-antenna AD1B 86 Jan 84 432-MHz high-gain Yagi K6HCP 46 Jan 76 432-MHz high-gain Yagi Comments, W0PW 63 May 76 432-MHz OSCAR antenna (HN) W1JAA 58 Jul 75 7-MHz attic antenna (HN) W2ISL 68 May 76 Antenna insulators, PTFE VHF W5JTL 98 Oct 85 Antenna-performance measurements using W5CC/W4RXY 75 May 79 celestial sources Antennas for satellite communications, simple K4GSX 24 May 74 Applied Yagi antenna design, part 1: a 2- WB3BGU 14 May 84 meter classic revisited Applied Yagi antenna design, part 2: 220 MHz WB3BGU 33 Jun 84 and the Greenblum design data Applied Yagi antenna design, part 3: 432 MHz WB3BGU 73 Jul 84 with Knadle and Tillon Applied Yagi antenna design, part 4: a 50- WB3BGU 103 Aug 84 MHz Tilton/Greenblum design Applied Yagi antenna design, part 5: WB3BGU 93 Sep 84 additional optimization techniques Circularly-polarized ground-plane antenna K4GSX 28 Dec 74 for satellite communications Colagi antenna, The VE3BFM 61 May 86 Collinear antenna (letter) W6SAI 70 Oct 71 Collinear antenna for two meters, nine- W6RJO 12 May 72 element Collinear antenna, four element 440-MHz WA6HTP 38 May 73 Collinear array for two meters, 4-element WB6KGF 8 May 71 Collinear, six meter K4ERO 59 Nov 69 Computer-aided design of long VHF Yagi VK4ZF 28 May 86 antennas Converting low-band mobile antenna to 144- K7ARR 90 May 77 MHz (HN) Corner reflector antenna, 432 M Hz WA2FSQ 24 Nov 71 Cubical quad, economy six-meter W6DOR 50 Apr 69 Cylindrical feedhorns revisited WA9HUV 29 Feb 86 Dual quad array for two meters W7SLO 30 May 80 Efficient matching VE7BS 83 Sep 83 Efficiently launch-VHF/UHF wave W3HWC 63 Oct 88 Fastening Trigon reflectors to VHF antennas W5JTL 88 Sep 84 (HN) Feed horn, cylindrical, for parabolic WA9HUV 16 May 76 reflectors Folded whip antenna for vhf mobile - WB2IFV 50 Apr 79 Weekender Ground plane, 2-meter, 0.7 wavelength W3WZA 40 Mar 69 Ground plane, portable vhf (HN) K9DHD 71 May 73 Ham notebook: a 2-meter halo antenna NR5A 63 May 87 Ham radio techniques W6SAI 32 Sep 81 Ham Radio Techniques: the Yagi optimizer W6SAI 68 Apr 90 Handi-antennas AA6PZ 42 May 83 Helical antenna matching Belliveau, John 73 May 88 High-performance Yagis for 432 MHz K1FO 8 Jul 87 High-performance Yagis for 432 MHz Comments, KLM 6 Sep 87 balun High-performance Yagis for 432 MHz Short circuit 97 Oct 87 Improved High-Performance Yagis for 432 MHz K1FO 9 May 89 Inexpensive five-eighth wave groundplane (HN) W7CD 84 Mar 81 Inexpensive half-wave 2-meter mobile antenna WE7C 32 Feb 90 J-pole antenna for 6-meters K4SDY 48 Aug 68 Log-periodic, yagi beam K6RIL, W6SAI 8 Jul 69 Log-periodic, yagi beam Correction 68 Feb 70 Long 2-meter collinears - a simple way to WB3AYW 95 May 86 achieve gain (HN) Magnet-mount antenna, portable (HN) WB2YYU 67 May 76 Magnetic mount for mobile antennas W0HK 52 Nov 78 Matching 432-MHz helical antennas W8NWU 44 Mar 83 Matching techniques for vhfiuhf antennas W1JAA 50 Jul 76 Microwave antenna, homebrew WB0VGI, Johnson 68 Sep 82 Microwave antenna, Low-cost K6HIJ 52 Nov 69 Microwave-antenna designers, challenge for W6FOO 44 Aug 80 Mobile antenna, magnet-mount W1HCI 54 Sep 75 Mobile antenna, six-meter (HN) W4PSJ 77 Oct 70 Mobile antennas, vhf, comparison of W4MNW 52 May 77 Moonbounce antenna, practical 144-MHz K6HCP 52 May 70 Multiband J antenna WB6JPI 74 Jul 78 Oscar antenna, mobile (HN) W6OAL 67 May 76 Oscar az-el antenna system WA1NXP 70 May 78 Parabolic reflector antennas VK3ATN 12 May 74 Parabolic reflector element spacing WA9HUV 28 May 75 Parabolic reflector gain W2TQK 50 Jul 75 Parabolic reflector, 16-foot homebrew WB6IOM 8 Aug 69 Parabolic reflectors, finding the focal WA4WDL 57 Mar 74 length (HN) Quad-yagi arrays, 432- and 1296-MHz W3AED 20 May 73 Quad-yagi arrays, 432- and 1296-MHz Short circuit 58 Dec 73 Re-entrant cavity antenna for the VHF bands W4FXE 12 May 81 Repeater antenna beam tilting K7NM 29 May 83 Repeater antenna beam tilting Short circuit 80 Jul 83 Simple antennas, 144-MHz WA3NFW 30 May 73 Switch, antenna for 2 meters, solid-state K2ZSQ 48 May 69 True north, how to determine for antenna K4DE 38 Oct 80 orientation True north, how to determine for antenna Comments, N6XQ, 7 Mar 81 orientation K4DE TV to 2-meter antenna conversion (Weekender) N4FQO 23 Jan 90 Two-meter antenna, simple (HN) W6BLZ 78 Aug 68 Two-meter fm antenna (HN) WB6KYE 64 May 71 Two-meter mobile antennas W6BLZ 76 May 68 Using a 2-meter quarter-wave whip on 450 MHz K1ZJH 92 May 81 (HN) Vertical antennas, truth about 5/8-wavelength K0DOK 48 May 74 Vertical antennas, truth about 5/8-wavelength Added note 54 Jan 75 (letter) VHF antenna null, achieving the perfect K3ED 48 May 83 Vhf antenna switching without relays (HN) K2ZSQ 76 Sep 68 VHF Yagi CAD on the C-64 W4PFZ 70 Sep 86 VHF/UHF Antennas NH6N 84 Jul 89 VHF/UHF world W1JR 110 May 84 VHF/UHF world W1JR 85 Dec 85 VHF/UHF world: Designing and building loop Short circuit 54 Jan 86 Yagis VHF/UHF world: Designing and building loop W1JR 56 Sep 86 Yagis VHF/UHF world: minimum requirements for 2- W1JR 39 Aug 87 meter EME - part1 VHF/UHF world: optimized 2- and 6-meter Yagis W1JR 92 May 87 VHF/UHF world: optimized 2- and 6-meter Yagis Short circuit 49 Jul 87 VHF/UHF world: optimized 2- and 6-meter Yagis Short circuit 41 Aug 87 VHF/UHF world: stacking antennas, part1 W1JR 129 Apr 85 VHF/UHF world: stacking antennas, part2 W1JR 95 May 85 VHF/UHF world: Yagi facts and fallacies W1JR 103 May 86 Whip, 5/8-wave, 144-MHz (HN) VE3DDD 70 Apr 73 Yagi antennas, how to design W1JR 22 Aug 77 Yagi triangular array W2IKP 42 May 87 Yagi trigon reflector, Optimizing WB3BGU 84 Jan 86 Yagi uhf antenna simplified (HN) WA3CPH 74 Nov 79 Yagi, 1296-MHz W2CQH 24 May 72 Yagi, a high-gain 70-cm W1JR 75 Dec 86 Yagi, a high-gain 70-cm Short circuit 68 Feb 87 Yagis, stacking is a science K1FO 18 May 85 antennas and transmission lines - matching and tuning Title Author Page Issue ----- ------ ---- ----- Active antenna coupler for VLF Burhans, Ralph W. 46 Oct 79 Antenna bridge calculations Anderson, 34 May 78 Leonard H. Antenna bridge calculations K6GK 85 Mar 81 Antenna bridge calculations Short circuit 84 Nov 81 Antenna bridge calculations (letter) W5QJR 6 Aug 78 Antenna coupler for three-band beams ZS6BT 42 May 72 Antenna coupler, six-meter K1RAK 44 Jul 74 Antenna impedance transformer for receivers W6NIF 70 Jan 70 (HN) Antenna instrumentation, simple, (repair K4IPV 71 Jul 77 bench) Antenna match, quick and simple Anderson, 58 Jan 81 Leonard H. Antenna match, quick and simple Short circuit 70 Feb 82 Antenna matcher, one-man W4SD 24 Jun 71 Antenna matching, easy WB4GCS 67 May 84 Antenna tuner (HN) W6XM 94 May 83 Antenna tuner adjustment (HN) WA4MTH 53 Dec 75 Antenna tuner for optimum power transfer W2WLR 28 May 70 Antenna tuner with a new twist (Weekender) W7CSD 59 Jun 90 Antenna tuner, automatic WA0AQC 36 Nov 72 Antenna tuner, medium-power toroidal WB2ZSH 58 Jan 74 Antenna tuners W3FQJ 58 Dec 72 Antenna tuners (ham radio techniques) W6SAI 30 Jul 81 Antenna tuning units W3FQJ 58 Jan 73 Balun design, another W6HPH 54 May 82 Balun, adjustable for yagi antennas W6SAI 14 May 71 Balun, coreless WA2SON 62 May 81 Balun, simplified (HN) WA0KKC 73 Oct 69 Baluns, wideband bridge W6SAI, WA6BAN 28 Dec 68 Broadband Antenna Baluns W6SAI 6 Jun 68 Broadband balun, high performance K4KJ 28 Feb 80 Broadband balun, simple and efficient W1JR 12 Sep 78 Broadband reflectometer and power meter VK2ZTB, VK2ZZQ 28 May 79 Broadband RF transformers K2LB 75 Jan 86 Capacitively coupled hybrids WA2EWT 70 Mar 83 Coaxial-line transformers, a new class of W6TC 12 Feb 80 Coaxial-line transformers, a new class of Short circuit 70 Mar 80 Coaxial-line transformers, a new class of Short circuit 67 Sep 80 Couplers, random-length antenna W2EEY 32 Jan 70 Designing trap antennas: a new approach W0JF 60 Aug 87 Dummy loads W4MB 40 Mar 76 Efficient matching VE7BS 83 Sep 83 Elmer's notebook: antenna tuner W1SL 102 May 88 Elmer's notebook:antenna tuner W1SL 83 Apr 88 Feeding and matching techniques for vhf/uhf W1JAA 54 May 76 antennas Gamma matching programs for the C-64/128 N0CAO 87 May 87 Gamma matching, basic WB0IKN 29 Jan 85 Gamma-match capacitor, remotely controlled K2BT 74 May 75 Gamma-matching networks, how to design W7ITB 46 May 73 Half-wave balun: theory and application K4KJ 32 Sep 80 Ham radio techniques W6SAI 42 Oct 81 Ham radio techniques W6SAI 65 Jan 84 Ham radio techniques W6SAI 63 Feb 84 Ham radio techniques Comments, K4KYV 12 May 84 (Feb 84) Ham radio techniques Comments, WA2DRL 8 Sep 84 (Jan 84) Ham radio techniques Comments, WD6DUD 8 Sep 84 (Feb 84) Ham radio techniques Comments, AD1G 8 Dec 84 (Feb 84) Ham Radio techniques: "radio ground" on 160 W6SAI 53 Mar 88 meters Ham radio techniques: Antenna Matching W6SAI 54 Nov 89 Systems Ham Radio Techniques: Interesting Antenna W6SAI 39 Oct 89 Fed Systems Ham Radio Techniques: The Gamma Match An W6SAI 56 Aug 89 Update Helical antenna matching Belliveau, John 73 May 83 HF hybrid descriptions W5TRS 80 Oct 83 High-frequency mobile antenna matcher, simple W6BCX 28 Jun 81 Hybrid ring WA2EWT 50 Aug 83 Impedance bridge, low-cost RX W8YFB 6 May 73 Impedance matching WB2NTQ 85 Jul 83 Impedance matching Comment, K0CQ 95 Nov 83 Impedance Matching Transformers and Ladder KZ3K 49 May 89 Line Impedance-matching baluns, open-wire W6MUR 46 Nov 73 Impedance-matching systems, designing W7CSD 58 Jul 73 Improving operation with the MFJ 989 W4RNL 24 Nov 88 transmatch (Weekender) Johnson Matchbox, improved K4IHV 45 Jul 79 Johnson Matchbox, improved Short circuit 92 Sep 79 L-Match, A Useful Tool for Improving Your SWR W3VT 29 Feb 89 L-Matching network, appreciating the WA2EWT 27 Sep 80 Loads, affect of mismatched transmitter W5JJ 60 Sep 69 Low swr, how important? W1GV/4 33 Aug 81 Low swr, how important? Comments, K1KSY, 6 Dec 81 W1GV/4 Lowpass antenna matching unit, inductance- W0YBF 24 May 82 tuned Macromatcher: increasing versatility K9DCJ 68 Jun 80 Matching 432-MHz helical antennas W8NWU 44 Mar 83 Matching complex antenna loads to coaxial WB7AUL 52 May 79 transmission lines Matching dipole antennas W1OLP 129 May 84 Matching dipole antennas Comments, W5XW 12 Apr 85 Matching sections KL7HIT 68 Mar 82 Matching system, two-capacitor W6MUR 58 Sep 73 Matching transformers, multiple quarter-wave K3BY 44 Nov 78 Matching, antenna, two-band with stubs W6MUR 18 Oct 73 Measuring complex impedance with swr bridge WB4KSS 46 May 75 Mobile transmitter, loading W4YB 46 May 72 Noise bridge calculations with TI 58/59 WD4GRI 45 May 78 calculators Noise bridge construction (letter) OH2ZAZ 8 Sep 78 Noise bridge for impedance measurements YA1GJM 62 Jan 73 Noise bridge for impedance measurements Added notes 66 May 74 Noise bridge for impedance measurements Added notes 60 Mar 75 Noise bridge for impedance measurements Comments, W6BXI 6 May 79 Noise bridge, antenna WB2EGZ 18 Dec 70 Noise bridge, antenna (HN) K8EEG 71 May 74 Omega-matching networks, design of W7ITB 54 May 78 Optimum pi-network design DL9LX 50 Sep 80 Phase meter, rf VE2AYU, Korth 28 Apr 73 Phased arrays, feeding: an alternative method KB8I 58 May 85 Phased arrays, feeding: an alternative method Short circuit 74 Jul 85 Phasometer (Weekender) K9MLD, K9PIQ 28 Jun 90 Pi network equations K4MT 109 Oct 88 Practically speaking: impedance matching K4IPV 27 Aug 88 Practically Speaking: Parts for Antenna K4IPV 83 Jan 89 Tuners and Linears .. Plus a Correction Quadrifilar toroid (HN) W9LL 52 Dec 75 Remote tuner for 75-meter mobiles (weekender) K9MLD 36 Oct 88 RF current loop (HN) K9PIQ 42 Mar 90 RX noise bridge, improvements to W6BXI, W6NKU 10 Feb 77 RX noise bridge, improvements to Comments 100 Sep 77 Simple 75-ohm Hardline to 50-ohm Match K9EYY 63 Jun 89 Stub-switched, stub-matched antennas W2EEY 34 Jan 69 Swr alarm circuits W2EEY 73 Apr 70 Swr bridge WB2ZSH 55 Oct 71 Swr bridge and power meter, integrated W6DOB 40 May 70 Swr bridge readings (HN) W6FPO 63 Aug 73 Swr indicator, aural, for the visually K6HTM 52 May 76 handicapped Swr meter W6VSV 6 Oct 70 Swr meter WB6AFT 68 Nov 78 Swr meter for the high-frequency bands WB6AFT 62 Oct 81 Swr meter, how accurate? (HN) WB9TQG 78 Jan 81 Swr meter, improving (HN) W5NPD 68 May 76 Swr, what is your? N4OE 68 Nov 79 T-Network impedance matching to coaxial W6EBY 22 Sep 78 feedlines Tandem pi networks W6MUR 32 Jul 82 Testing baluns K4KJ 30 Aug 83 The series section transformer W7XC 55 Jun 90 Transformers, coaxial-line W6TC 18 Mar 80 Transmatch, five-to-one W7IV 54 May 74 Transmission lines, grid dipping (HN) W2OLU 72 Feb 71 Transmission lines, uhf WA2VTR 36 May 71 Uhf coax connectors (HN) W0LCP 70 Sep 72 Updating the Viking MB-VA antenna tuner (HN) VE7GWO 43 Mar 90 VHF/UHF Antennas NH6N 84 Jul 89 antennas and transmission lines - towers and rotators Title Author Page Issue ----- ------ ---- ----- Antenna and rotator preventive maintenance WA1ABP 66 Jan 69 Antenna and tower restrictions W7IV 24 Jan 76 Antenna carriage and track pole mount KB3K 46 Aug 83 Antenna guys and structural solutions W6RTK 33 Jun 78 Antenna hinge N4LI 70 Aug 83 Antenna mast, build your own tilt-over W6KRT 42 Feb 70 Antenna mast, build your own tilt-over Correction 76 Sep 70 Antenna position display AE4A 18 Feb 79 Antenna tower, fixed, tilt-over conversion PA0SE 125 May 85 Armstrong beam rotator KP4DM 68 Feb 82 Automatic Rotor Brake Delay, The Weekender: WA1SPI 89 Aug 89 AUTOTRAK, A simple rotor interface board for K7NH 10 Dec 87 the C-64, VIC-20, etc Az-el antenna mount for satellite W2LX 34 Mar 75 communications CDE tailtwister rotor, pulse-position WB4EXW 30 Jan 81 control of Cornell-Dubilier rotators (HN) K6KA 82 May 75 Ham Notebook: Crank-up Tower Cable Guides A Bachelor 54 Feb 89 Ham notebook: simple tower guards K1ZJH 39 Sep 88 Ham-M modifications (HN) W2TQK 72 May 76 Ham-M rotator automatic position control WB6GNM 42 May 77 Ham-M rotator control box, modification of K4DLA/W1RDR 68 Nov 80 (HN) Keep your tower up KB9IW 26 Jun 84 Keeping your beam, tips for W6BLZ 50 Aug 68 KLM antenna rotor, computer control for (HN) W8MQW 66 Feb 81 Match your antenna to your tower WD0DGF 14 Jun 84 Pipe antenna masts, design data for W3MR 52 Sep 74 Pipe antenna masts, design data for Added design 75 May 75 notes (letter) Rotator for medium-sized beams K2BT 48 May 76 Rotator starting capacitors (letter) W6WX 92 Sep 79 Rotator starting capacitors (letter) Short circuit 70 Mar 80 Rotator, AR-22, fixing a sticky WA1ABP 34 Jun 71 Rotator, T-45, Improvement (HN) WA0VAM 64 Sep 71 Stress analysis of antenna systems W2FZJ 23 Oct 71 Telescoping tv masts (HN) WA0KKC 57 Feb 73 Tilt-over tower uses extension ladder W5TRS 71 May 75 Tiltover tower base, low-cost WA1ABP 86 Apr 68 Tower guying (HN) K9MM 98 Nov 77 Tower installation: make it sturdy, make it WB5IIR 22 Jun 84 safe Tower, homemade tilt-over WA3EWH 28 May 71 Tower, wind-protected crank-up HN 74 Oct 69 Towers and rotators K6KA 34 May 76 Turning that big array VE3AIA 10 Jun 86 UHF antenna tower, low-cost KA6GVY 30 Oct 84 Wind loading on towers and antenna K4KJ 16 Aug 74 structures, how to calculate Wind loading on towers and antenna Added note 56 Jul 75 structures, how to calculate antennas and transmission lines - transmission lines Title Author Page Issue ----- ------ ---- ----- 75-ohm CATV cable in amateur installations W7VK 28 Sep 78 75-ohm CATV hardline matching to 50-ohm K1XX 31 Sep 78 systems Antenna-transmission line analog, part 1 W6UYH 52 Apr 77 Antenna-transmission line analog, part 2 W6UYH 29 May 77 Antiflex coaxial cable connection (HN) W4KV 42 May 82 Artificial Transmission lines KA8OBL 21 Jul 86 Balun, coaxial WA0RDX 26 May 77 Bridge measurements, the half-wave K4KI 108 Nov 84 transmission line in (HN) Cheapie coax (letter) WB4AHZ 8 May 82 Coax cable dehumidifier K4RJ 26 Sep 73 Coax cable, repairing water damage (HN) W5XW 73 Dec 79 Coax cable, salvaging water-damaged (HN) W5XW 88 Jan 80 Coax connectors, repairing broken (HN) W0HKF 66 Jun 70 Coax, Low-cost (HN) K6BIJ 74 Oct 69 Coax, measuring with an RCL bridge (HN) WB9TQG 78 Oct 82 Coaxial cable (C&T) W1DTY 50 Jun 76 Coaxial cable connectors (HN) WA1ABP 71 Mar 69 Coaxial cable connectors, homebrew hardline- K2YOF 32 Apr 80 to-uhf Coaxial cable supports (HN) W2GA 56 Jun 68 Coaxial cable, checking (letter) W2OLU 68 May 71 Coaxial cable, what you know about W9ISB 30 Sep 68 Coaxial cable, what you need to know about W9ISB 30 Sep 68 Coaxial connectors can generate rfi W1DTY 48 Jun 76 Coaxial connectors, sealing, (HN) W5WX 64 Mar 80 Coaxial connectors, sealing, (HN) Letter, K7ZFG 6 Oct 80 Coaxial feedthrough panel (HN) W3URE 70 Apr 69 Coaxial transmission lines, underground W0FCH 38 May 70 Coaxial-cable fittings, type-F K2MDO 44 May 71 Coaxial-line loss, measuring with W2VCI 50 May 72 reflectometer Coaxial-line transformers, a new class of W6TC 12 Feb 80 Coaxial-line transformers, a new class of Short circuit 70 Mar 80 Coaxial-line transformers, a new class of Short circuit 67 Sep 80 Connectors for CATV coax cable W1IIM 52 Oct 79 Copper pipe transmission lines WA2EWT, WA4BUS 34 Jan 90 Elmer's notebook: transmission lines W1SL 90 Mar 88 General purpose line transformers W6IOJ 94 Aug 86 Ham radio techniques, fifty years ago W6SAI 58 Jun 84 Ham Radio Techniques: A Balun for 10 Meters W6SAI 103 Jan 89 Ham Radio Techniques: Coax Revisited W6SAI 21 Jun 89 Hardline connectors, inexpensive WB4GCS 62 May 83 Hardline connectors, inexpensive Comments, KM1H 8 Nov 83 Hardline, matching 75 to 50-ohm W4VRV 43 Oct 82 Hybrid coupler W1OOP 36 Jun 82 Impedance Matching Transformers and Ladder KZ3K 49 May 89 Line Impedance transformer, non-synchronous (HN) W5TRS 66 Sep 75 Impedance transformer, non-synchronous (HN) Comments, W3DVO 63 May 76 Matching 75-ohm CATV hardline to 50-ohm K1XX 31 Sep 78 system Matching transformers, multiple quarter-wave K3BY 44 Nov 78 Measuring coax cable loss with an swr meter W89TOG 35 May 81 Measuring coax cable loss with an swr meter Comments, 6 Sep 81 WD4KMP, WB9TQG Measuring coax cable loss with an swr meter Comments, W4PPB 8 Feb 82 Measuring transmission line parameters OE2APM/AA3K 22 Sep 88 Novel Method for Measuring Cable Attenuation OE2APM 65 May 89 Open-wire feedthrough insulator (HN) W4RNL 79 May 75 Open-wire line for 2 meters N4UH 94 Jan 87 Pi, pi-L, and tandem quarter-wave line W6MUR 12 Feb 82 matching networks, response of PL-259 connectors, attaching to RG-58/U W5BVF 81 Jan 82 cable (HN) Plumber's delight coax connector (weekender) N4LI 50 May 81 Practically speaking: amplifier tuning K4IPV 78 Nov 86 problem Practically speaking: standing waves- a K4IPV 85 Oct 88 review Practically speaking: transmission lines and K4IPV 34 Sep 88 their typical AC responses Real coax: impedance and phase relationships K2BT 8 Apr 87 Real coax: impedance and phase relationships Short circuit 91 Jul 87 Remote switching multiband antennas G3LTZ 68 May 77 Rf power divider (HN) W5TRS 80 Feb 82 RF transmission cable, microwave applications K3HW 106 May 85 Single feedline for multiple antennas K2ISP 58 May 71 Solenoid rotary switches W2EEY 36 Apr 68 Solving transmission line problems on your K9CZB 74 May 86 Commodore 64 Solving transmission line problems on your Short circuit 87 Jul 86 Commodore 64 T coupler, the (HN) K3NXU 68 Nov 80 Time domain reflectometer VE3EFC 49 Nov 83 Time-domain reflectometry, checking K7CG 32 Jul 80 transmission lines with Transformers, coaxial-line W6TC 18 Mar 80 Transmission line calculations using your W5TRS 40 Nov 76 pocket calculator for Transmission lines, long, for optimum N4UH 12 Oct 80 antenna location Transmission-line circuit design for 50 MHz W6GGV 38 Nov 80 and above Transmission-line design, Pt. 2: distributed W6GGV 62 Jan 81 resonant circuits in uhf/vhf lines Transmission-line design, Pt. 3: distributed W6GGV 56 Feb 81 resonant circuits in vhf/uhf lines Transmission-line design, Pt. 4: distributed W6GGV 64 Mar 81 resonant circuits In vhf/uhf lines Transmission-line design, Pt. 5: 50 MHz and W6GGV 72 Apr 81 above Transmit/receive switch, solid-state vhf-uhf W4NHH 54 Feb 78 Tuner, receiver (HN) WA7KRE 72 Mar 69 Tuner, wall-to-wall antenna (HN) W2OUX 56 Dec 70 Uhf microstrip swr bridge W4CGC 22 Dec 72 VHF/UHF world W1JR 85 Dec 85 VHF/UHF world: transmission lines W1JR 83 Oct 85 VHF/UHF world: transmission lines Comments W9ICZ 9 Apr 86 VSWR indicator, computing WB9CYY 58 Jan 77 VSWR indicator, computing Short circuit 94 May 77 Zip-cord feedlines (HN) W7RXV 32 Apr 78 Zip-cord feedlines (letter) WB6BHI 6 Oct 78 audio Title Author Page Issue ----- ------ ---- ----- 75-Hz wide audio filter W2OBJ 14 Jan 90 A deep notch resonant filter W0THM 63 Feb 90 Active filters K6JM 70 Feb 78 Add-on selectivity for communications G4GMO 41 Nov 81 receivers Advanced CW processor W6NRW 25 Dec 86 An improved AGC Circuit W8WFH 72 Sep 89 Audio agc principles and practice WA5SNZ 28 Jun 71 Audio amplifier and squelch circuit W6AJF 36 Aug 68 Audio CW filter W7D1 54 Nov 71 Audio filter building blocks KB0CY 74 Jul 83 Audio filter design, computer-aided KE2J 15 Oct 85 Audio filter design, elliptic lowpass W3NQN 20 Feb 84 Audio filter, tunable, for weak-signal K6HCP 28 Nov 75 communications Audio filters, aligning (HN) W4ATE 72 Aug 72 Audio filters, inexpensive W8YFB 24 Aug 72 Audio fitter mod (HN) K6HIL 60 Jan 72 Audio mixer (HN) W6KNE 66 Nov 76 Audio module, a complete K4DHC 18 Jun 73 Audio oscillator to pulse generator W0DLO 50 Oct 84 conversion (HN) Audio processor, communications for reception W6NRW 71 Jan 80 Audio response, tailoring (HN) N1FB 42 May 82 Audio to microwave amplifier, build your own Gruchalla, 12 Mar 84 Michael Audio transducer (HN) WA1OPN 59 Jul 75 Audio-oscillator module, Cordover WB2GQY 44 Mar 71 Audio-oscillator module, Cordover Correction 80 Dec 71 Audio-power integrated circuits W3FQJ 64 Jan 76 Aural vco provides relative metering K1ZJH 97 Jan 87 Automatic gain control, an audio K7NM 24 Sep 84 Better audio for mobile operation K6GCO 48 Feb 81 Binaural CW reception, synthesizer for W6NRW 46 Nov 75 Binaural CW reception, synthesizer for Comment 77 Feb 77 Build a QSO "beeper" KF6CU 38 Jan 88 Code practice oscillator (weekender) N2DCH 65 Oct 88 Compressor, dual channel W2EEY 40 Jul 68 Converting mobile microphones for handheld KD8KZ, WB3JCC 79 Mar 86 VHF transceivers CW acoustical filter W7BI 22 Jan 83 CW and RTTY, digital audio filter for W1OER 60 Aug 83 CW and RTTY, digital audio filter for Short circuit 199 Aug 84 Distortion and splatter K5LLI 44 Dec 70 Duplex audio-frequency generator with AFSK WB6AFT 66 Sep 79 features Dynamic microphones (C&T) W1DTY 46 Jun 76 Extended-range VU meter WB6JNN 59 Sep 86 Filter for CW, tunable audio WA1JSM 34 Aug 70 Filter, lowpass audio, simple OD5CG 54 Jan 74 Filter, simple audio W4NVK 44 Oct 70 Filter, tunable peak-notch audio W2EEY 22 Mar 70 Filter, variable bandpass audio W3AEX 36 Apr 70 Filter-frequency translator for CW W2EEY 24 Jun 70 reception, Integrated audio Gain control IC for audio signal processing Jung 47 Jul 77 Ham Notebook: Mobile HT Audio, The Near W9PXP 68 Aug 89 Ultimate Solution Handheld transceiver, audio amplifier for N1RM 38 Jul 81 Hang agc circuit for ssb and CW W1ERJ 50 Sep 72 Headphone cords (HN) W2OLU 62 Nov 75 Headphones, dual-impedance (HN) AB9Q 80 Jan 79 Headphones, lightweight K6KA 34 Sep 68 Heath HW-2036 mods (letter) Mosher, E.A. 8 Jun 81 Impedance match, microphone (HN) W5JJ 67 Sep 73 Improving the audio on the ICOM IC-27 KD8KZ 61 Feb 86 Increased flexibility for the MFJ K3NEZ 58 Dec 76 Enterprises CW filters Intercom, simple (HN) W4AYV 66 Jul 72 Microphone preamplifier with agc Bryant 28 Nov 71 Microphone, using Shure 401A withDrake TR.4 G3XOM 68 Sep 73 (HN) Microphones and simple speech processing W1OLP 30 Mar 80 Microphones and simple speech processing Letter, W5VWR 6 Sep 80 Microphones, muting (HN) W6IL 63 Nov 75 Modifying microphones VE7CB/W6 81 Jan 87 Multiband Speech Processor KL7ISA 32 Apr 89 Notch filter, tunable RC WA5SNZ 16 Sep 75 Notch filter, tunable RC Comment 78 Apr 77 Oscillator, audio, IC W6GXN 50 Feb 73 Oscillator-monitor, solid-state audio WA1JSM 48 Sep 70 Passive audio filter design, part 2: Niewiadomski, S. 41 Oct 85 highpass and bandpass filters Passive audio filter design, part 2: Comments, W3NQN 8 Nov 85 highpass and bandpass filters Passive audio filter design, part 3 Stefan 29 Jan 86 Niewiadomski Phone patch W8GRG 20 Jul 71 Phone patch using junk-box parts K7NM 40 Oct 80 Phone patches, building and using N6ARE 34 Oct 85 Power speaker enhances mobile operation K1ZJH 83 Jan 88 Pre-emphasis for asb transmitters OH2CD 38 Feb 72 Processor for code tapes W4ULD 61 Sep 88 RC active filters (letter) W6NRM 102 Jun 78 RC active filters using op amps W4IYB 54 Oct 76 Receivers, better audio for K7GCO 74 Apr 77 Repeaters, speech synthesis for N9EE 79 Mar 84 Rf clipper for the Collins S-line K6JYO 18 Aug 71 Rf speech processor, ssb W2MB 18 Sep 73 Sight and sound CW W6NRW 10 Jan 88 Simulated carbon microphones, using with W9MKV 18 Oct 81 Amateur transmitters Solo-16 Acoustic CW Speaker:The Weekender, K1BQT 12 Mar 89 Speaker-driver module, IC WA2GCF 24 Sep 72 Speech amplifiers, curing distortion Allen 42 Aug 70 Speech clipper, IC K6HTM 18 Feb 73 Speech clipper, IC Added notes 64 Oct 73 (letter) Speech clippers, rf G6XN 26 Nov 72 Speech clippers, rf G6XN 12 Dec 72 Speech clippers, rf Added notes 58 Aug 73 Speech clippers, rf Added notes 72 Sep 74 Speech clipping (letter) W3EJD 72 Jul 72 Speech clipping in single-sideband equipment K1YZW 22 Feb 71 Speech compressor (HN) Novotny 70 Feb 76 Speech processing W1DTY 60 Jun 68 Speech processing technique, split audio band W1DTY 30 Jun 76 Speech processing, principles of ZL1BN 28 Feb 75 Speech processing, principles of Added notes 75 May 75 Speech processing, principles of Added notes 64 Nov 75 Speech processing, split-band (letter) Schreuer, N7WS 74 Feb 80 Speech processor for ssb, simple K6PHT 22 Apr 70 Speech processor, audio-frequency K3PDW 48 Aug 77 Speech processor, audio-frequency Short circuit 68 Dec 77 Speech processor, IC VK9GN 31 Dec 71 Speech processor, logarithmic WA3FIY 38 Jan 70 Speech processor, split-band (letter) WA2SSO 6 Dec 79 Speech processors (letter) K3ND 6 Aug 80 Speech systems, improving K2PMA 72 Apr 78 Squelch, audio-actuated K4MOG 52 Apr 72 Synthesizer-filter, binaural W6NRW 52 Nov 76 Tape head cleaners (letter) K4MSG 62 May 72 Tape head cleaning (letter) Buchanan 67 Oct 72 Telephone ring indicator, visual (HN) W2QLI 62 Apr 84 TR-2400, external microphone for (HN) WB2IFV 64 Mar 82 Understanding telephones N6ARE 39 Sep 85 Understanding telephones Comments, KD7WL 9 Apr 86 Variable-frequency audio filter W4VRV 62 Apr 79 Voice-band equalizer WB2GCR 50 Oct 80 Voice-operated gate for carbon microphones W6GXN 35 Dec 77 commercial equipment Title Author Page Issue ----- ------ ---- ----- 3-500Z tube failure (HN) AG6K 78 Oct 82 300-Hz crystal filter for Collins receivers W1DTY 58 Sep 75 300-Hz crystal filter for Collins receivers G3UFZ 90 Jan 78 (letter) 5CX1500A power pentode (HN) K9XI 77 Oct 82 Alliance rotator improvement (HN) K6JVE 68 May 72 Alliance T-45 rotator Improvement (HN) WA0VAM 64 Sep 71 Amateur Radio equipment survey number two W1SL 52 Jan 80 An Exclusive Look At Kenwood's TS-950S NXIG 28 Oct 89 An improved AGC Circuit W8WFH 72 Sep 89 Annunciator bell for the Kantronics KPC2 K1ZJH 22 Aug 86 Argonaut 509 conversion for 30 meters (HN) AA4LL 49 Oct 84 Atlas 180, improved vfo stability (HN) K6KLO 73 Dec 77 Atlas 210 transceiver, sldetone (HN) ZL2RP 67 Mar 82 Atlas 210 transceiver, sldetone (HN) Short circuit 79 Oct 82 Atlas 350 AGC circuit, modifications (HN) K0RL 42 May 82 Autek filter (HN) K6EVO, WA6WZQ 83 May 79 C-64 and GLB PK-1 interface circuit W2EHD 87 May 87 CAT control system for the Yaesu FT-757GX SM6CPI 26 Nov 87 CDE tailtwister rotor, pulse-position WE4EXW 30 Jan 81 control of CDR AR-22 rotator, fixing a sticky WA1ABP 34 Jun 71 Cleanup tips for amateur equipment (HN) Fisher 49 Jun 78 Clegg 27B, S-meter for (HN) WA2YUD 61 Nov 74 Collins 32S cooling (HN) N1FB 74 Nov 79 Collins 32S PA disable jacks N1FB 65 Mar 80 Collins 32S, improved stability for (HN) N1FB 83 May 79 Collins 32S-1 CW modification (HN) W1DTY 82 Dec 69 Collins 32S-1 CW modification (HN) Correction 76 Sep 70 Collins 32S-1, updating N1FB 76 Dec 78 Collins 32S-3 audio (HN) K6KA 64 Oct 71 Collins 32S-series ALC meter improvement (HN) W8FR 100 Nov 77 Collins 516F-2 high-voltage regulation (HN) N1FB 85 Jun 79 Collins 516F-2 low-voltage and bias N1FB 68 Jul 81 modification (HN) Collins 516F-2 power supply, transient W6AD 31 Apr 81 protection for Collins 516F-2 solid-state rectifiers (HN) N1FB 91 Feb 79 Collins 51J product detector (letter) K5CE 6 Oct 78 Collins 51J PTO restoration W6SAI 36 Dec 69 Collins 51J, modifying for ssb reception W6SAI 66 Feb 78 Collins 70E12 PTO repair (HN) W6BIH 72 Feb 77 Collins 70K-2 PTO, correcting mechanical K9WEH 58 Feb 75 backlash (HN) Collins 75A-4 modifications (HN) W4SD 67 Jan 71 Collins 75A-4 receiver, improving overload W6ZO 42 Apr 70 response in Collins 75A-4 receiver, improving overload Short circuit 76 Sep 70 response in Collins 75A4 avc mod (letter) W9KNI 63 Sep 75 Collins 75A4 hints (HN) W6VFR 68 Apr 72 Collins 75A4 noise limiter W1DTY 43 Apr 76 Collins 75A4 PTO, making it perform like new W3AFM 24 Dec 74 Collins 75A4, increased selectivity for (HN) W1DTY 62 Nov 75 Collins 75S CW sidetone (HN) N1FB 93 Apr 79 Collins 75S frequency synthesizer W6NBI 8 Dec 75 Collins 75S frequency synthesizer Short circuit 85 Oct 76 Collins 75S receiver, (HN) N1FB 94 Oct 78 Collins 75S-3 alignment (HN) N1FB 79 Jan 81 Collins 75S-series crystal adapter (HN) K1KXA 72 Feb 77 Collins KWM-2 KWM-2A, owners' reports WB1CHQ 22 Mar 81 Collins KWM-2, updating W6SAI 48 Sep 79 Collins KWM-2/KWM-2A modifications (HN) W6SAI 80 Aug 76 Collins KWM2 transceivers, improved W6SAI 81 Jun 77 reliability (HN) Collins R-388(51J), inter-band calibration W5OZF 95 Sep 77 stability (HN) Collins R390 rf transformers, repairing (HN) WA2SUT 81 Aug 76 Collins R390A modifications WA2SUT 58 Nov 75 Collins R390A, improving the product detector W7DI 12 Jul 74 Collins R392, improved ssb reception with VE3LF 88 Jul 77 (HN) Collins receivers, 300-Hz crystal filter for W1DTY 58 Sep 75 Collins S-line backup power supply (HN) N1FB 78 Oct 79 Collins S-line monitoring (HN) N1FB 78 Aug 79 Collins S-line power supply mod (HN) W6IL 61 Jul 74 Collins S-line receivers, improved W6FR 36 Jun 76 selectivity Collins S-line spinner knob (HN) W6VFR 69 Apr 72 Collins S-line transceiver mod (HN) W6VFR 71 Nov 72 Collins S-line, improved frequency readout W1GFC 53 Jun 76 for the Collins S-line, owners' report WB1CHQ 12 Apr 81 Collins S-line, reducing warm-up drift W6VFR 46 Jun 75 Collins S-line, rf clipper for K6JYO 18 Aug 71 Collins S-line, rf clipper for Correction 80 Dec 71 Collins S-line, syllabic vox system for W0IP 29 Oct 77 Comdel speech processor, increasing the W6SAI 67 Mar 71 versatility of (HN) Computer control of ICOM R-71, 271, 471, and NG6Q 47 Apr 86 751 radios Cornell-Dubilier rotators (HN) K6KA 82 May 75 DenTron 160XV transverter, stabilizing the WB2QLL 46 Jun 81 (Weekender) Drake gear, simple tune-up (HN) W7DIM 79 Jan 77 Drake R-4 receiver frequency synthesizer for W6NBI 6 Aug 72 Drake R-4 receiver frequency synthesizer for Modification: 74 Sep 74 letter Drake R-4B and TR-4, split-frequency WB8JCQ 66 Apr 79 operation Drake R-4C product detector, improving (HN) W3CVS 64 Mar 80 Drake R-4C receiver audio Improvements (HN) W3CVS 79 Jan 81 Drake R-4C, cleaner audio for (HN) K1FO 88 Nov 78 Drake R-4C, electronic bandpass tuning in Horner 58 Oct 73 Drake R-4C, new audio amplifier for WB0JGP, K8RRH 48 Apr 79 Drake R-4C, new product detector for (HN) WB0JGP 94 Oct 78 Drake R4C backlash, cure for (HN) W3CVS 82 May 79 Drake T-4X transmitters, improved tuning on W1IBI, W1HZH 81 Jan 79 160 meters (HN) Drake TR-22C sensitivity improvement (HN) K7OR 78 Oct 79 Drake TR-4, using the Shure 401A microphone G3XOM 68 Sep 73 with (HN) Drake TR-7 transceiver, Woodpecker noise K1KSY 67 Feb 81 blanker for (HN) Drake W-4 directional wattmeter W1DTY 86 Mar 68 Eimac chirp and drift (HN) W5OZF 68 Jun 70 EX crystal and oscillator WB2EGZ 60 Apr 68 Extending receive coverage for the IC-02 and WB6GTM 77 Jul 86 IC-04 Extending receive coverage for the IC-02 and Comments: WB6GTM 6 May 87 IC-04 Factory service (letter) W6HK 6 Jul 80 Feedline loss, calculating with a single K9MM 96 Jun 78 measurement at the transmitter (HN) FT-101E, 10-meter preamp for K1NYK 26 Jul 81 Galaxy feedback (HN) WA5TFK 71 Jan 70 Genave transceivers, S-meter for (HN) K9OXX 80 Mar 77 Hallicrafters HT-37, improving W8NIF 78 Feb 79 Hallicrafters HT-37, increased sideband W3CM 48 Nov 69 suppression Ham radio techniques W6SAI 63 May 84 Ham radio techniques, fifty years ago W6SAI 58 Jun 84 Ham Radio Techniques: "white noise" revisited W6SAI 79 Oct 87 Ham-3 rotator, digital readout for K1DG 56 Jan 79 Ham-M modification (HN) W2TQK 72 May 76 Ham-M rotator automatic position control WB6GNM 42 May 77 Ham-M rotator control box, modifications of K4DLA/W1RDR 68 Nov 80 (HN) Ham-M rotator torque loss (HN) W1JR 85 Jun 79 Ham-M rotator torque loss (HN) Short circuit 92 Sep 79 Hammarlund HQ215, adding 160-meter coverage W2GHK 32 Jan 72 Heath CA1, ten-minute timer from (HN) K8HZ 74 Jul 68 Heath HD-10 keyer, positive lead keying (HN) W4VAF 88 Nov 78 Heath HD-1982 Micoder for low-impedance Johnson, Wesley 86 May 78 operation Heath HG-10B vfo, independent keying of (HN) K4BRR 67 Sep 70 Heath HM-2102 vhf wattmeter, high power W9TKR 70 Feb 76 calibration for (HN) Heath HM-2102 wattmeter mode (letter) K3VNR 64 Sep 75 Heath HM-2102 wattmeter, better balancing VE6RF 56 Jan 75 (HN) Heath HO-10 as RTTY monitor scope (HN) K9HVW 70 Sep 74 Heath HR-2B external speaker and tonepad (HN) N1FB 89 Nov 78 Heath HW-100 incremental tuning (HN) K1GUU 67 Jun 69 Heath HW-100 tuning knob, loose (HN) VE3EPY 68 Jun 71 Heath HW-100, HW-101, grid-current monitor K4MFR 46 Feb 73 for Heath HW-100, the new W1NLB 64 Sep 68 Heath HW-101 sidetone control (HN) AD9M 79 Jul 79 Heath HW-101, using with a separate receiver WA1MKP 63 Oct 73 (HN) Heath HW-12 on MARS (HN) K8AUH 63 Sep 71 Heath HW-16 keying (HN) W7DI 57 Dec 73 Heath HW-16, low-impedance headphones for WN8WJR 88 Jul 77 (HN) Heath HW-16, vfo operations for WB6MZN 54 Mar 73 Heath HW-16, vfo operations for Short circuit 58 Dec 73 Heath HW-17 modifications (HN) WA5PWX 66 Mar 71 Heath HW-17A, perking up (HN) HN 70 Aug 70 Heath HW-202 lamp replacement (HN) W5UNF 83 Sep 76 Heath HW-202, adding private-line WA8AWJ 53 Jun 74 Heath HW-202, another look at the fm channel K7PYS 68 Mar 76 scanner for Heath HW-2036 antenna socket (HN) W3HCE 80 Jan 79 Heath HW-2036, carrier-operated relay for WD5HYO 58 Feb 80 Heath HW-2036, Lever action switch W2IFR 99 Jul 78 illumination (HN) Heath HW-2036, outboard LED frequency display WB8TJL 50 Jul 78 Heath HW-2036, updating to the HW-2036A WB6TMH, WA6ODR 62 Mar 79 Heath HW-7 mods, keying and receiver WA5KPG 60 Dec 74 blanking (HN) Heath HW-8, improved keying for (HN) W3HVK 60 Aug 82 Heath HWA-2036-3 crowbar circuit (HN) W3HCE 88 Nov 78 Heath HX-1681 W2UWO 83 Sep 83 Heath IM-11 vtvm, convert to IC voltmeter K6VCI 42 Dec 74 Heath intrusion alarm (HN) Rossman 81 Jun 77 Heath Micoder improvements W1OLP 42 Nov 78 Heath Micoder matching (letter) WB8VUN 8 Sep 78 Heath Model IO-4530 oscilloscope, Bailey 20 Aug 82 modifications Heath SB receivers, RTTY reception with (HN) K9HVW 64 Oct 71 Heath SB-100, using an outboard receiver K4GMR 68 Feb 70 with (HN) Heath SB-102 headphone operation (HN) K1KXA 87 Oct 77 Heath SB-102 modifications (HN) W2CNQ 58 Jun 75 Heath SB-102 modifications (HN) W2CNQ 78 Mar 77 Heath SB-102 modifications (HN) W2CNQ 79 Mar 77 Heath SB-102 modifications (letter) W1JE 110 Mar 78 Heath SB-102, receiver incremental tuning K1KXA 81 Aug 76 for (HN) Heath SB-102, rf speech processor for W6IVI 38 Jun 75 Heath SB-102, WWV on (HN) K1KXA 78 Jan 77 Heath SB-200 amplifier modifying for the W6UOV 32 Jan 71 8873 zero-bias triode Heath SB-200 amplifier, six-meter conversion K1RAK 38 Nov 71 Heath SB-200 CW modification K6YB 99 Nov 77 Heath SB-300, RTTY with W2ARZ 76 Jul 68 Heath SB-303, 10-MHz coverage for (HN) W1JE 61 Feb 74 Heath SB-400 and SB-401, improving alc WA9FDQ 71 Jan 70 response in (HN) Heath SB-610 as RTTY monitor scope (HN) K9HVW 70 Sep 74 Heath SB-650 using with other receivers K2BYM 40 Jun 73 Heath SB-series crystal control and narrow WA4VYL 54 Jun 73 shift RTTY with (HN) Heath SE-400/SB-401, simple speech amplifier W8LMH 72 Jun 81 for (HN) Heath ten-minute timer K6KA 75 Dec 71 Heath's new all-band transceiver, the SS-MW W9JUV 12 Nov 82 Heathkit HW-202, fm channel scanner for W7BZ 41 Feb 75 Heathkit HW-2036, updating the WA4BZP 50 Nov 80 Heathkit HW-8, increased break-in delay (HN) K6YB 84 Jun 79 Heathkit Micoder adapted to low-impedance WB2GXF 78 Aug 79 input (HN) Heathkit SB-104A, Improved receiver N2EO 78 Apr 81 performance for Heathkit SB-series equipment, heterodyne K1KXA 78 Mar 77 crystal switching (HN) Heathkit Sixer, spot switch (HN) WA6FNR 84 Dec 69 Heathkit, noise limiter for (HN) W7CKH 67 Mar 71 Henry 2K4 and 3KA linears, electronic bias W1CBY 75 Aug 78 switching HP-35 calculator, keyboard cleaning (HN) Anderson, 40 Jul 78 Leonard H. Hy-Gain 400 rotator, improved indicator W4PSJ 60 May 78 system for IC2AT, carrying case for (HN) W6XM 62 Aug 83 ICOM 701 owners' report WB1CHQ 56 Oct 81 ICOM IC-22S, using below 146 MHz (HN) W1IBI 92 Apr 79 ICOM IC-230, adding splinter channels (HN) WA1OJX 82 Sep 76 ICOM IC-2A(T), odd splits N7AAD 65 Jul 82 ICOM's newest transceiver N1ACH 17 Mar 88 ICOM-22A wiring change (HN) K1KXA 73 Feb 77 ICs, drilling template for (HN) WA4WDL, WB4LJM 78 Mar 77 Improved gain distribution for the Yaesu FT- K1ZJH 53 Jul 87 726R Improving the audio on the ICOM IC-27 KD8KZ 29 Jan 86 James Research oscillator/monitor W1DTY 91 Mar 68 James Research permaflex key W1DTY 73 Dec 68 Johnson Matchbox, improved K4IHV 45 Jul 79 Johnson Matchbox, improved Short circuit 92 Sep 79 Kenwood TR-7400A, scanner for (the Kenscan WB7QYB 50 Jan 81 74) Kenwood TR7500, preprogrammed (HN) W9KNI 95 Oct 78 Kenwood TS-520 CW filter modification(HN) W7ZZ 21 Nov 75 Kenwood TS-520, TVI cure for (HN) W3FUN 78 Jan 77 Kenwood TS-520-SE transceiver, counter mixer W5NPD 60 Sep 80 for Kenwood TS-530S, more RIT/XIT for the (HN) WB4EHS 58 Apr 90 KLM antenna rotor, computer control for (HN) W8MQW 66 Feb 81 Knight-kit inverter/charger review W1DTY 64 Apr 69 Knight-kit two-meter transceiver W1DTY 62 Jun 70 Kudos for Kantronics Comments: WB3EXR 6 Jun 87 KWM2, RIT for the (HN) KH6JF 109 Jul 84 Measurements Corporation 59 grid-dip W6GXN 82 Nov 78 oscillator improvements Micro Mart RM terminal modification (HN) WA5VQK 99 Jun 78 Mini-mitter II W6SLO 72 Dec 71 Mini-mitter II modifications (HN) K1ETU 64 Apr 76 Modifying the Trio-Kenwood TS930S WB9BXT 67 Apr 86 Modifying the Yaesu FT-301 for 30-meter AF9Q 42 Mar 86 coverage More fixes for the IC22S VHF radio VE6ZS 91 Oct 88 More optional notes on the TS-930S W6FR 23 Apr 88 Motorola channel elements WB4NEX 32 Dec 72 Motorola Dispatcher, converting to 12 volts WB6HXU 26 Jul 72 Motorola Dispatcher, converting to 12 volts Short circuit 64 Mar 74 Motorola fm receiver mods (HN) VE4RE 60 Aug 71 Motorola P-33 series, improving WB2AEB 34 Feb 71 Motorola receivers, op-amp relay for W6GDO 16 Jul 73 Motorola voice commander, improving W0DKU 70 Oct 70 Motrac Receivers (letter) K5ZBA 69 Jul 71 National NCL-2000, using the Drake T-4XC (HN) K5ER 94 Jan 78 Ni-cad battery charging (letter) W6NRM 6 Jul 80 Owners survey: 2-meter handhelds KA1ZM 35 Jul 82 Owners' survey, TR7 WB1CHQ 66 Nov 81 Practically speaking: now that the warranty K4IPV 67 Sep 85 has expired Practically speaking: now that the warranty Comments, W5QJM 8 Nov 85 has expired Quement circular slide rule W2DXH 62 Apr 68 R-1000 mod (HN) W6XM 60 Aug 82 R-392 receiver mods (HN) KH6FOX 65 Apr 76 RDF, An improved K0OV 67 Jul 87 Regency HA transceivers, signal-peaking W8HVG 68 Jun 76 indicator and generator for (HN) Regency HR-2, narrowbanding WA8TMP 44 Dec 73 Regency HR-212, channel scanner for WA0SJK 28 Mar 75 S-line, QSK noise (HN) N1FB 66 Mar 82 SB-220 transceiver, inrush current W3GYM 66 Dec 80 protection for - Weekender SB-303 receiver, noise reduction (HN) Suzuki 70 Jun 82 SB301/401, Improved sidetone operation W1WLZ 73 Oct 69 SBE linear amplifier tips (HN) WA6DCW 71 Mar 69 Signal One review W1NLB 56 May 69 Simple IC-735 to C-64 interface N7ICW 39 Mar 87 Simple modifications and adjustments for the W6FR 19 Apr 87 TS-930S Sony ICF-2001, eight-channel memory scanner W3CSW 54 Aug 82 for Spurious causes (HN) K6KA 66 Jan 74 Standard 826M, more power from (HN) WB6KVF 68 Apr 75 Swan 120, converting to two meters K6RIL 8 May 68 Swan 160X birdie suppression (HN) W6SAI 36 Oct 78 Swan 250 Carrier suppression (HN) WB8LGA 79 Oct 76 Swan 250, update your (HN) K8ZHZ 84 Dec 69 Swan 350 and 400, RTTY operation (HN) WB2MIC 67 Aug 69 Swan 350 CW monitor (HN) K1KXA 63 Jun 72 Swan 350 CW monitor (HN) Correction: 77 May 73 letter Swan 350, curing frequency drift WA6IPH 42 Aug 79 Swan 350, receiver incremental tuning (HN) K1KXA 64 Jul 71 Swan television interference: an effective W2OUX 46 Apr 71 remedy T150A frequency stability (HN) WB2MCP 70 Apr 69 Technology of commercial television part 2: KL7AJ 54 Jan 88 hardware Telefax transceiver conversion K0QMR 16 Apr 74 Ten-Tec Argonaut, accessory package for W7BBX 26 Apr 74 Ten-Tec Corsair modification (HN) N3BEK 62 Apr 84 Ten-Tec Horizon/2 audio modification (HN) WB9RKN 79 Oct 79 Ten-Tec KR-20 keyer, stabilization of (HN) W3CRG 69 Jul 76 Ten-Tec Omni-D, improved CW agc for (HN) W6OA 88 Jan 80 Ten-Tec RX10 communicators receiver W1NLB 63 Jun 71 Thumbwheel frequency selector for the Yaesu KA9SNF 33 Nov 87 FT-757GX TR-2500/2600 2-channel programming (HN) K9MLD 128 Oct 85 Triton IV, 30-meter operation (HN) AA4LL 68 Jun 83 TS-430S IF filter mod (HN) KB0CY 125 May 84 TS-820 filter switching modification (HN) K7OAK 72 Jun 80 TS-820/TS-820S, reducing interference in (HN) W4MB 88 Jan 80 TS-930S headset audio, increased undistorted W6FR 128 Oct 85 (HN) Updating the Viking MB-VA antenna tuner (HN) VE7GWO 43 Mar 90 Using an RTTY terminal unit with the AA8V 59 Aug 86 Heathkit HD4040 TNC Wilson Mark II and IV, modifications to (HN) W9EPT 89 Jan 80 Yaesu FT-227R memorizer, improved memory (HN) WA2DHF 79 Aug 79 Yaesu FT101 clarifier (letter) K1NUN 55 Nov 75 Yaesu sideband switching (HN) W2MUU 56 Dec 73 Yaesu spurious signals (HN) K6KA 69 Dec 71 Yaesu spurious signals (HN) Units affected 67 Oct 73 (letter) computer-aided design Title Author Page Issue ----- ------ ---- ----- Bandpass filter design, interdigital, N6JH, Monemzadeh 12 Jan 85 computer-aided Bandpass filter design, interdigital, Short circuit 117 Jun 85 computer-aided Computer-aided design of long VHF Yagi VK4ZF 28 May 86 antennas Computer-aided design of printed circuit NU1N 10 Jan 90 boards Design a no-tune amplifier with your W7DHD 8 Sep 87 personal computer Designing Yagis with the Commodore 64 N0CAO 107 Jan 86 Diagnostic serial data latch KA9SNF 56 Apr 88 Direct currents reduce core permeability K5BVM 58 Jul 86 Direct currents reduce core permeability Short circuit 87 Jul 86 Elmer's notebook: modems and RS-232 W1SL 113 Oct 88 Gamma matching programs for the C-64/128 N0CAO 87 May 87 Ham notebook: rebuild your C-64 keyboard AF8B 74 Feb 88 with C-16 parts Linear design by computer W4MB 37 Feb 87 Low-cost pc board layout software Freeman, Eve 8 Oct 87 Remote repeater programming using a computer KD9BC 89 Mar 86 and a telephone RF filters, Build narrowband WB4EHS 10 Mar 86 RF filters, Build narrowband Short circuit 36 Jun 86 Solving transmission line problems on your K9CZB 74 May 86 Commodore 64 Top-down filter design VE5FP 41 Jan 87 VHF Yagi CAD on the C-64 W4PFZ 74 May 86 Yagi design program Comments: W6NBI 6 May 87 Yagis, designing with the Commodore 64 WA3EKL 59 Jun 85 construction techniques Title Author Page Issue ----- ------ ---- ----- 2-meter monitor WA3ENK 64 Jul 88 A dab of paint, a drop of wax (HN) VE3BUE 78 Aug 68 A New Addition for Your TNC K9MLD 72 Dec 89 AC line cords (letter) W6EG 80 Dec 71 Advanced CW processor W6NRW 25 Dec 86 Air-wound coils, constructing W7BKE 37 Aug 84 Aluminum tubing, clamping (HN) WA9HUV 78 May 75 Aluminum's new face W4BRS 60 May 68 An Audio Patch Panel for the Multimode KB6IC 65 Dec 89 Station An NE602-based QRP Transceiver for 20-meter K1BQT 9 Jan 89 CW An RTTY Converter W1VO 76 Jun 89 AN/UPX-6 cavities, converting surplus W6NBI 12 Mar 81 Analog Panel Meters W6WTU 39 Apr 89 Anodize dyes (letter) W4MB 6 Sep 79 Anodizing aluminum VE7DKR 62 Jan 79 Anodizing aluminum Comments, WA9UXK 6 Nov 79 Antenna carriage and track pole mount K83K 46 Aug 83 Antenna hinge N4LI 70 Aug 83 Antenna insulators, homemade (HN) W7ZC 70 May 73 APC trimmer, adding shaft to (HN) W1ETT 68 Jul 69 Audio filter building blocks KB0CY 74 Jul 83 Audio filter building blocks Short circuit 92 Nov 83 Automatic Rotor Brake Delay WA1SPI 89 Aug 89 Battery charger, NiCd, constant current, a K2MWU 67 Aug 85 pulsed Blower-to-chassis adapter (HN) K6JYO 73 Feb 71 BNC connectors, mounting (HN) W9KXJ 70 Jan 70 Build a better box Gruchalla, 45 Aug 84 Michael Build narrowband RF filters, Comments WB4EHS 9 Sep 86 Bulkhead connector (HN) K9CZB 78 Apr 85 Bulkhead connector (HN) Short circuit 74 Jul 85 Cabinet construction techniques W7KDM 76 Mar 79 Capacitors, custom, how to make WB0ESV 36 Feb 77 Capacitors, oil-filled (HN) W2OLU 66 Dec 72 Carpet samples in the ham shack K1ZJH 82 Sep 87 Center insulator, dipole WA1ABP 69 May 69 Cheap dots (HN) W6XM 77 Sep 82 Circuit boards with terminal inserts (HN) W3K8M 61 Nov 75 Cliplead carousel (HN) WB1AQM 79 Oct 79 Coax cable, salvaging water-damaged (HN) W5XW 88 Jan 80 Coax connectors, repairing broken (HN) W0HKF 66 Jun 70 Coax relay coils, another use (HN) K0VQY 72 Aug 69 Coaxial cable connectors (HN) WA1ABP 71 Mar 69 Coaxial cable connectors, homebrew hardline- K2YOF 32 Apr 80 to-uhf Code practice oscillator (weekender) N2DCH 65 Oct 88 Coils, self-supporting Anderson 42 Jul 77 Cold galvanizing compound (HN) W5UNF 70 Sep 72 Collector Matching Networks KZ9J 34 Jan 89 Color coding parts (HN) WA7BPO 58 Feb 72 Common-point Grounding: Lightning Protection KIZJH 24 Jul 89 for Repeaters Component marking (HN) W1JE 66 Nov 71 Construction techniques using PVC pipe to W2OQI 98 Sep 88 make antennas Cooling semiconductors part 1: designing and Martin, Vaughn D. 33 Jul 84 using heatsinks Cooling semiconductors part 2: blowers and Martin, Vaughn D. 52 Aug 84 fans Crystal switching, remote (HN) WA8YBT 91 Feb 79 Custom resistors, nomogram design WA5EKA 68 Jun 83 Deburring holes (HN) W2DXH 75 Jul 68 Design an amplifier around the 3CX1200A7 W7DHD 33 Dec 87 Digi-Keyer AB4DP 68 Oct 89 Drill guide (HN) W5BVF 68 Oct 71 Drilling aluminum (HN) W6IL 67 Sep 75 DTMF tone signaling circuit WV6A 42 Sep 88 Dummy load, DC W4MLE 91 Apr 85 Dust buildup, decreasing (HN) K4KI 77 Sep 82 Elevation indicator, inexpensive W5JTL 67 Jun 85 Elmer's Notebook: elementary electronics- W1SL 67 May 90 alternating current and capacitors Elmer's Notebook: elementary electronics- W1SL 90 Feb 90 capacitors Elmer's Notebook: elementary electronics- W1SL 92 Jan 90 exploring resistance Elmer's Notebook: elementary electronics- W1SL 84 Apr 90 inductors and AC Elmer's Notebook: elementary electronics- W1SL 63 Jun 90 wrapping up AC theory Elmer's Notebook: FETS-The Other Transistors W1SL 104 Feb 89 Elmer's Notebook: Simple Instruments RF W1SL 91 Nov 89 Output Monitor Elmer's notebook: the myterious "Q" W1SL 110 Sep 88 Elmer's Notebook: Transistors and How They W1SL 62 Jan 89 Work Elmer's Notebook: Visual Aids- Liquid W1SL 81 Aug 89 Crystal Displays Elmer's Notebook: Voltage-variable Capacitors W1SL 100 Apr 89 Enclosures, homebrew custom W4YUU 50 Jul 74 Etch tank (HN) W3HUC 79 Jan 77 Exploding diodes (HN) VE3FEZ 57 Dec 73 Extend Your DVM's Measurement Capabilities N6YC 72 Oct 89 Fan, speed control (HN) K4KI 77 Sep 82 Ferrite beads W5JJ 48 Oct 70 Ferrite beads, how to use K1ORV 34 Mar 73 Files, cleaning (HN) Walton 66 Jun 74 Filter chokes, unmarked W0KMF 60 Nov 68 Five-band Junkbox Transmitter W3RMD 42 Dec 89 G.O.E.S. reception: a simple approach WA4WDL 46 Jan 84 Get the most from your NiCds (Weekender) K3OF 88 Dec 88 Grommet shock mount (HN) VE3BUE 77 Oct 68 Grounding (HN) W9KXJ 67 Jun 69 Ham notes: Waterproofing fittings W4MLE 101 Nov 86 Heat sinks, homemade (HN) WA0WOZ 69 Sep 70 Heatsink cooling fan (HN) W6XM 22 Jul 83 Heatsink cooling fan (HN) Comments, W2GH 8 Oct 83 Heatsink cooling fan (HN) Comments, DJ4BZ 12 May 84 High-frequency dummy load (HN) W1KWE 64 Jun 84 Homebrew art W0PEM 56 Jun 69 Homebrew Neutralizing Capacitor N4LC 38 May 89 Homebrew tuning dial N2DCH 75 Dec 88 Homebrewing equipment from parts to metal W7KBE 26 Mar 88 work Hot etching (HN) K8EKG 66 Jan 73 Hot wire stripper (HN) W8DWT 67 Nov 71 IC holders (HN) W3HUC 80 Aug 76 IC lead former (HN) W5ICV 67 Jan 74 IC2AT, carrying case for (HN) W6XM 62 Aug 83 Indicator circuit, LED WB6AFT 60 Apr 77 Inductance equation, a different approach K4KI 116 Dec 84 (HN) Inductance, toroidal coil (HN) W3WLX 26 Sep 75 Industrial cartridge fuses, using (HN) VE3BUE 76 Sep 68 Junk-box ingenuity; how to buy, use, and WB4EHS 32 Aug 84 recycle surplus electronic parts Keeping an Eye on Your Sideband PEP GW4NAH 17 Sep 89 Lightning protection (letter) K9MM 12 Dec 79 Linear Tuning with a War Surplus Capacitor N2DCH 40 Jun 89 lnductors, graphical aid for winding W7POG 41 Apr 77 Low-cost pc board layout software Freeman, Eve 8 Oct 87 Magnetic fields and the 7360 (HN) W7DI 66 Sep 73 Make a homebrew sheet metal brake for WB6BIH 43 Jun 86 chassis construction projects Making printed circuit boards WA3JUF 27 Jan 90 Metal cleaning with dip-type cleaners (HN) W5XW 82 Jan 82 Metal cleaning with dip-type cleaners (HN) Comment, K6YPD 8 Jun 82 Metalized capacitors (HN) W8YFB 82 May 79 Metric conversions for screw and wiresizes W1DTY 67 Sep 75 Microcircuits, visual aids for working on K9SRL 90 Jul 78 Microstrip impedance program K8UR 84 Dec 84 Miniature sockets (HN) Lawyer 84 Dec 69 Minibox, cutting down to size (HN) W2OUX 57 Mar 74 Mobile installation, putting together W0FCH 36 Aug 69 Mobile mount bracket (HN) W4NJF 70 Feb 70 Modular converter, 144-MHz W6UOV 64 Oct 70 Motorized Agitator for Your Printed Circuit K3OF 68 Jun 89 Boards NE5205 wideband RF amplifier Gruchalla, 30 Sep 86 Michael NE5205 wideband RF amplifier Short circuit 72 Jan 87 Near linear tuning with dual eccentric N2DCH 53 Jan 90 pulleys Neutralizing tip (HN) ZE6JP 69 Dec 72 New uses for old tuners W6WTU 25 Jan 88 Noisy fans (HN) W8IUF 70 Nov 72 Noisy fans (HN) Correction 67 Oct 73 (letter) Nuvistor heat sinks (HN) WA0KKC 57 Dec 73 Parasitic suppressor (HN) WA9JMY 80 Apr 70 Passive audio filter design, part 1: Niewiadomski, S. 17 Sep 85 development and analysis PC layout using longhand WB9QZE 26 Nov 78 PC layout using longhand Comments, W5TKP 6 Jun 79 PEP Wattmeter WA1SPI 76 Oct 89 Phone plug wiring (HN) N1FB 85 Jun 79 Polymer film transforms mechanical energy to WA4KFZ 55 Dec 84 electrical energy Power FETS: trend for VHF amplifiers Peters, Daniel 12 Jan 84 and W7PUA Practically speaking: "ferriting" out the K4IPV 72 Jun 88 problem Practically speaking: drift and shift K4IPV 75 Jan 88 Practically speaking: feedback K4IPV 60 May 88 Practically speaking: grounding and K4IPV 47 Apr 87 shielding, pt.1 Practically speaking: grounding and K4IPV 81 May 87 shielding, pt.2 Practically speaking: grounding and Comments: KA8DKT 6 Aug 87 shielding, pt.2 Practically speaking: Keep it cool K4IPV 75 Apr 86 Practically Speaking: Light Metal and Other K4IPV 23 Apr 89 Topics Practically speaking: noise, signals and K4IPV 77 Feb 88 amplifiers Practically speaking: non-ideal linear IC K4IPV 72 Jul 88 amplifiers typical problems Practically speaking: Overview of op amps- K4IPV 100 Nov 88 part 1 Practically speaking: overview of op amps- K4IPV 83 Dec 88 part 2 Practically speaking: parts sources K4IPV 78 Nov 86 Precision high-voltage dc regulator AG6K 75 Aug 88 Printed circuit layout and drilling template WA4WDL 73 Jul 82 Printed circuits without printing W4ZG 62 Nov 70 Printed-circuit boards, cleaning (HN) W5BVF 66 Mar 71 Printed-circuit boards, how to clean K2PMA 56 Sep 76 Printed-circuit boards, how to make K4EEU 58 Apr 73 Printed-circuit boards, low-cost W6CMQ 44 Aug 71 Printed-circuit boards, low-cost W8YFB 16 Jan 75 Printed-circuit boards, practical Hutchinson 6 Sep 71 phototabrication of Printed-circuit labels (HN) WA4WDK 76 Oct 70 Printed-circuit standards (HN) W6JVE 58 Apr 74 Printed-circuit tool (HN) W2GZ 74 May 73 Printed-circuits, simple method for (HN) W4MTD 51 Apr 78 Professional look, for that VE3GFN 74 Mar 68 Protect Your Amateur Station from Lightning KY9L 25 Sep 89 Punching aluminum panels (HN) W7DIM 57 Jun 68 Quick fix for soldering irons (HN) W2YW 62 Apr 84 Rack and panel construction W7OE 48 Jun 68 Rack construction, a new approach K1EUJ 36 Mar 70 Rectifier terminal strip (HN) W5PKK 80 Apr 70 Reflected power limiter K4KI 63 Jul 84 Rejuvenating transmitting tubes with W6NIF 80 Aug 78 thoriated-tungsten filaments (HN) Remote baselsimplex phone patch controller AA4NX and KK4LA 54 Aug 88 Remote Control Switching System VK2WD 62 Oct 89 Remote Driver/Controller for a Two-antenna NH6N 79 Apr 89 System Restoring panel lettering (HN) W8CL 69 Jan 73 Rewinding transformers with CAD W6WTU 74 Mar 87 RF filters, Build narrowband WB4EHS 10 Mar 86 RF filters, Build narrowband Short circuit 36 Jun 86 Screwdriver, adjustment (HN) WA0KGS 66 Jan 71 Set screws, taming (HN) W5PGG 64 Mar 82 Silk screen techniques, make your own board W3QOM 83 Nov 84 using Silver plating (letters) WA0AGD 94 Nov 77 Silver plating for the amateur W4KAE 62 Dec 68 Silver plating made easy WA9HUV 42 Feb 77 Silverplating, safe, sensible K9EYY 29 Feb 85 Simple DC Amplifier for Your Meter W0JF 10 Jun 89 Simple Infrared Detector, A (HN) K1ZJH 27 Jun 89 Simple low-cost comb generator frequency Martin, Lorry 78 Jul 88 calibrator Simple receivers from complex ICs W6VEH 10 Nov 88 Small parts tray (HN) W2GA 58 Jun 68 Solar power for your ham station NH6N 14 Dec 84 Solder dispenser, simple (HN) W2KID 76 Sep 68 Soldering aluminum (HN) ZE6JP 67 May 72 Soldering fluxes (HN) K3HNP 57 Jun 68 Soldering tip (HN) Lawyer 68 Feb 70 Soldering tip cleaner (HN) W3HUC 79 Oct 76 Soldering tips WA4MTH 15 May 76 Structural evaluation of Yagi elements K5IU 29 Dec 88 Superhet coilset, design with a microcomputer Sterrenburg, 113 Nov 84 F.A.S. The Guerri report: pc boards W6MGI 109 Sep 86 Thumbwheel switch modification(HN) VE3GDX 56 Mar 74 Tilt your rig (HN) WA4NED 58 Jun 68 Toroids, plug-in (HN) K8EEG 60 Jan 72 Transfer letters (HN) WA2TGL 78 Oct 76 Transformers, repairing W6NIF 66 Mar 69 Transmit Control for Mobile Operation G4CLF 24 Nov 89 Trimmers (HN) W5LHG 76 Nov 69 Tuning indicator for RTTY and packet radio W0HZR 65 Sep 88 Turns per inch from wire size (HN) K8UR 97 Dec 83 Two in one: trace doubler for CRO, and Tseng Liao 26 Dec 88 square wave and pulse generator (HN) Two in one: trace doubler for CRO, and Short circuit 26 Jan 90 square wave and pulse generator (HN) Uhf coax connectors (HN) W0LCP 70 Sep 72 Uhf hardware (HN) W6CMQ 76 Oct 70 Ultra Low Power Four-digit Sequence Touch WA4ADG 30 Dec 89 Tone Decoder Ultra Low Power Four-digit Sequence Touch Short circuit 87 Mar 90 Tone Decoder Understanding and using 723 Voltage K3OF 42 Mar 89 Regulators Underwriter's knot (HN) W1DTY 69 May 69 Universal analog breadboard Gruchalla, 85 Jun 86 Michael Variable Gain 160-Meter Preamp KD9SV 46 Oct 89 Vectorboard toot (HN) WA1KWJ 70 Apr 72 Volume controls, noisy, temporary fix (HN) W9JUV 62 Aug 74 Watercooling the 2C39 K6MYC 30 Jun 69 Wideband Frequency Analyzer AA4FB 9 Nov 89 Wire-wound potentiometer repair (HN) W4ATE 77 Feb 78 Wiring and grounding W1EZT 44 Jun 69 Workbench, electronic W1EZT 50 Oct 70 ZX-81/TS1000 controller: new use for old N9NB 31 Dec 86 computers digital techniques Title Author Page Issue ----- ------ ---- ----- $40 Digital Voice Storage ID'er WA4ADG 10 Feb 89 220-MHz 9600-Baud Data Radio System for W2DUC 67 Feb 89 Packet A New Addition for your TNC K9MLD 72 Dec 89 Add a digital readout to the "poor man's WA2PZO 84 Sep 88 spectrum analyzer" Amateur FSK: A spectral analysis WA6NCX 42 Dec 86 AMTOR, AX.25, and HERMES: a performance W9JD 63 Dec 85 analysis of three systems AMTOR, AX.25, and HERMES: a performance Comments, G3PLX 9 May 86 analysis of three systems Annunciator bell for the Kantronics KPC2 K1ZJH 22 Aug 86 Artificial Intelligence Applications In NULN 30 Oct 89 Amateur Radio Audio filter design, computer-aided KE2J 15 Oct 85 AUTOTRAK, A simple rotor interface board for K7NH 10 Dec 87 the C-64, VIC-20, etc Basic rules and gates Anderson, 76 Jan 79 Leonard H. Build a QSO "beeper" KF6CU 38 Jan 88 Building a Digital Filter NB9K 9 Apr 89 CAT control system for the Yaesu FT-757GX SM6CPI 26 Nov 87 Commodore 64, $100 printer (HN) W2QLI 86 Aug 85 Computer control of ICOM R-71, 271, 471, and NG6Q 47 Apr 86 751 radios Continuous phase tones Comments: G3VMR 6 Aug 87 Counters and weights Anderson, 66 Aug 79 Leonard H. Decoding data signals WB4GCS 60 Dec 88 Deluxe logic probe M. Wilde 74 Jan 87 Digi-Keyer AB4DP 68 Oct 89 Digiscope WB0CLH 50 Jun 79 Digital can do more, Comments KA4JFO 9 Mar 86 Digital clock, build a fail-safe K1MC 54 Oct 85 Digital frequency readout using the W3NNL 83 Nov 85 Commodore 64 Digital HF radio: a sampling of techniques KA2WEU/DJ2LR 19 Apr 85 Digital HF radio: a sampling of techniques Short circuit 121 May 85 Digital signal processing, part 1: the NU1N 24 Apr 90 fundamentals Digital techniques: gate arrays for control Anderson, 82 Jan 80 Leonard H. Digital techniques: inside a phase-frequency Anderson, 28 Sep 82 detector Leonard H. Digital techniques: shocking truths about Anderson, 36 Oct 82 semiconductors Leonard H. Digital voice storage in the ham shack WA4ADG 56 Mar 90 Digital voice storage in the ham shack Short circuit 81 May 90 Digital-circuit problems, avoiding built-in, W1BG 43 Sep 81 part one Digital-circuit problems, avoiding built-in, Comments VE2QO 6 Dec 81 part one Digital-circuit problems, avoiding built-in, W1BG 50 Oct 81 part two Digital-circuit problems, avoiding built-in, Comments VE2QO 6 Dec 81 part two Direct synthesis VFO W7SX 10 Sep 88 Down counters Anderson, 72 Sep 79 Leonard H. DTMF controller for repeaters WB4FXD 47 Sep 85 DTMF Group Call Decoder AA4NX 53 Mar 89 DTMF tone signaling circuit WV6A 42 Sep 88 Dynistor, the W6GXN 49 Apr 68 Electro-Braille Transducers and their I4MK 59 Mar 89 Application Elmer's notebook: an introduction to AMTOR W1SL 101 Sep 87 Elmer's notebook: an introduction to digital W1SL 92 Jul 87 communications Elmer's notebook: packet radio W1SL 100 Oct 87 Finding the Source of Computer-generated KBTM 30 Sep 89 interference Flip-flop internal structure Anderson, 86 Apr 79 Leonard H. Frequency synthesis up to 2 GHz WA6DYW 22 Apr 88 Gate arrays for pattern generation Anderson, 72 Oct 79 Leonard H. Gate structure and logic families Anderson, 66 Feb 79 Leonard H. Get on SSTV - with the C-64 I2CAB, I2AED, 43 Oct 86 ed. K9EI Get on SSTV - with the C-64 Short circuit 97 Oct 87 Going Digital NH6N 20 Jan 89 HP-11 serial loop Martin, Vaughn D. 101 Apr 84 Improving the WB3CEH programmable callsign KL7XO 82 Sep 87 identifier (HN) Making waves W6HDM 44 Mar 82 Multivibrators and analog input interfacing Anderson, 78 Jun 79 Leonard H. Packet board update Comments: VE3LNY 6 Jan 87 Packet radio and area networking WB3JZO 38 Dec 84 Packet radio primer WA1FHB 30 Dec 85 Packet radio TNC for the IBM PC VE3LNY 10 Aug 86 Packet radio, automatic frequency and WB2OSZ 41 Dec 85 deviation tester Packet radio, introduction to VE2BEN 64 Jun 79 Packet radio: part1 KV7D, KV7B 14 Jul 83 Packet radio: part2 KV7D, KV7B, 18 Aug 83 WA7GXD Packet radio: the software approach W4UCH 63 Sep 84 PL tone generator, a programmable WB0VSZ 51 Apr 84 PL tone generator, a programmable Short circuit 125 May 84 Practically Speaking: Getting to know the K4IPV 34 Dec 89 Logic Families- pt 1: TTL Practically speaking: using the digital K4IPV 47 Apr 88 frequency counter- some pitfalls Propagation delay and flip-flops Anderson, 82 Mar 79 Leonard H. RAM drive for packet radio AD1B 44 Dec 87 RTTY reader, interrupt-driven KN4L 72 Sep 84 Run RTTY on your Timex NU4V 110 Apr 85 Run RTTY on your VIC-20 W5TRS 120 Apr 85 Satellite tracker, digitally-controlled KA8OBL 102 Sep 85 Self-gating the 82S90/74S196 decade counter W9LL 82 May 79 (HN) Simple PROM Programmer, A V4V6A 81 Mar 89 Smith Chart impedance matching on your WA9GFR 120 Oct 84 Commodore 64 Software piracy (letter) Forsyth, Mike 8 Sep 84 Spread spectrum and digital communication N9NB 13 Dec 85 techniques: a primer Station Control Node Expand Your Versatility WAQRJT 23 Mar 89 with SCN Synthesizers, VHF and UHF, design of digital G4CLF 26 Jul 82 components Talking digital clock K9KV 30 Oct 79 The Guerri report W6MGI 124 Jan 86 The Guerri report W6MGI 125 Apr 86 The Guerri report: computer technology W6MGI 54 Nov 84 The Guerri report: computer technology Short circuit 8 Dec 84 The Guerri report: signal processing W6MGI 156 Dec 84 Thumbwheel frequency selector for the Yaesu KA9SNF 33 Nov 87 FT-757GX True frequency digital readout for the HW-101 NU4F 8 Jan 87 True frequency digital readout for the HW-101 Short circuit 41 Aug 87 Two-Loop 10-Hz Step 40-70 MHz Synthesizer PY1LL & C Mathias 24 Jan 89 Ultra Low Power Four-digit Sequence Touch WA4ADG 30 Dec 89 Tone Decoder Ultra Low Power Four-digit Sequence Touch Short circuit 87 Mar 90 Tone Decoder Using an RTTY terminal unit with the AA8V 59 Aug 86 Heathkit HD4040 TNC VIC-20 printer (HN) W2QLI 88 Sep 84 features and fiction Title Author Page Issue ----- ------ ---- ----- 1929-1941,the Golden years of amateur radio W6SAI 34 Apr 76 1979 world administrative radio conference W6APW 48 Feb 76 Alarm, burglar-proof (HN) Eisenbrandt 56 Dec 75 Automatic Packet Beacon Tracker and Monitor W4GBB 66 Aug 89 Backscatter: amateur radio growth? W6SAI 4 Mar 90 Backscatter: Amateur Radio Licensing Fees NXIG 6 Oct 89 Backscatter: for sale: the 20-meter amateur NX1G 4 May 90 band ... Backscatter: Glasnost and Amateur Radio N1ACH 4 Feb 89 Backscatter: Juxtaposition of Technologies NXIG 4 Nov 89 Backscatter: life, liberty, and the right to NX1G 4 Apr 90 privacy Backscatter: More cause for Thought NXIG 4 Sep 89 Backscatter: no new novices? no way! W9JUV 9 Jun 90 Backscatter: No-Code Revisited NIACH 4 Mar 89 Backscatter: No-Code Survey Results N1ACH 4 Jun 89 Backscatter: Ode to the Death of PRB-3 N1ACH 4 Aug 89 Backscatter: somewhere over the horizon NX1G 4 Feb 90 (radar, that is) Backscatter: The FCC and 20-Meter Third NX1G 4 Jan 90 Party Traffic Backscatter: The More Things Change.. N1ACH 4 Jul 89 Binding 1970 issues of ham radio (HN) W1DHZ 72 Feb 71 Brass pounding on wheels K6QD 58 Mar 75 Catalina wireless, 1902 W6BLZ 32 Apr 70 DXer's Diary W9KNI 18 Mar 81 DXer's Diary W9KNI 26 Apr 81 DXer's Diary W9KNI 22 Jun 81 DXer's Diary W9KNI 60 Aug 81 DXer's Diary Comments 6 Sep 81 DXer's Diary W9KNI 70 Dec 81 Early wireless stations W6BLZ 64 Oct 68 Electromagnetic jargon generator, state-of- N6TX 75 Apr 85 the-art Electronic bugging K2ZSQ 70 Jun 68 Fire protection in the ham shack Darr 54 Jan 71 First wireless in Alaska W6BLZ 48 Apr 73 From Amateur to professional KI2U 54 Aug 81 Hallicrafters history W6SAI 20 Nov 79 Hallicrafters story (letter) K0ADM 6 May 80 Hallicrafters story (letter) W1TVN 6 May 80 Hallicrafters story (letter) WA2JVD 6 Sep 80 Ham Radio sweepstakes winners, 1972 W1NLB 58 Jul 72 Ham Radio sweepstakes winners, 1973 W1NLB 68 Jul 73 Ham Radio sweepstakes winners, 1975 W1NLB 54 Jul 75 Ham radio techniques W6SAI 32 Sep 81 Ham radio techniques W6SAI 42 Oct 81 Ham radio techniques (01/83) W6SAI 66 Jan 83 Ham radio techniques (02/83) W6SAI 77 Feb 83 Ham radio techniques (03/83) W6SAI 47 Mar 83 Ham radio techniques (04/83) W6SAI 52 Apr 83 Ham radio techniques (04/83) Comments, W6DKZ 8 Dec 83 Ham radio techniques (05/83) W6SAI 52 May 83 Ham radio techniques (06/83) W6SAI 46 Jun 83 Ham radio techniques (07/83) W6SAI 42 Jul 83 Ham radio techniques (08/83) W6SAI 40 Aug 83 Ham radio techniques (09/83) W6SAI 41 Sep 83 Ham radio techniques (10/83) W6SAI 64 Oct 83 Ham Radio techniques: "the greatest little W6SAI 68 Feb 88 magazine in the world" Ham radio techniques: 160-meter band W6SAI 46 May 81 Ham radio techniques: amateur radio 1941 W6SAI 30 Aug 81 Ham radio techniques: amateur radio, 1933 W6SAI 41 Jun 81 Ham radio techniques: antenna tuners W6SAI 30 Jul 81 Ham radio techniques: earth-moon-earth W6SAI 40 Feb 81 Ham radio techniques: Ever work a W10? W6SAI 43 Feb 87 Ham radio techniques: Ever work a W10? Short circuit 50 Apr 87 Ham Radio Techniques: May perambulation W6SAI 56 May 90 Ham radio techniques: more about moonbounce W6SAI 34 Mar 81 Ham radio techniques: radio-frequency W6SAI 30 Dec 81 interference Ham radio techniques: radio-frequency W6SAI 34 Nov 81 Interference Ham radio techniques: ten-meter band W6SAI 38 Apr 81 Ham Radio Techniques: The "Invention of W6SAI 17 Mar 89 Radio" Ham Radio techniques: the year was 1923... W6SAI 89 Jan 88 Ham radio techniques: triband Yagi beam for W6SAI 68 Jan 81 20, 15, and 10 meters Ham radio techniques: triband Yagi beam for Short circuit 84 Nov 81 20, 15, and 10 meters Ham Radio Techniques: WARC 1992 W6SAI 35 Jun 90 Ham radio techniques: Xingiang Province, the W6SAI 55 Apr 87 last frontier Hellschreiber, a rediscovery PA0CX 28 Dec 79 How to be DX W4NXD 58 Aug 68 Interview with Dr. Kenneth Davies K2RR 28 Jan 83 James R. Fisk memorial W1XU 2 Jun 80 James R. Fisk, W1HR - some reflections W6NIF 6 Jun 80 Jammer problem, solutions for UX3PU 56 Apr 79 Jammer problem, solutions for Comments 6 Sep 79 Jim Fisk, tribute to, publisher's log W1NLB 8 Jun 80 Jim, a tug at your memory W4VT 28 May 81 Nostalgia with a vengance W6HDM 28 Apr 72 Observation and opinion W9KNI 6 Jul 81 One hundred years of electric waves KR6A 22 Aug 88 Photographic illustrations WA4GNW 72 Dec 69 Q signals (letter) W4MB 8 Feb 83 QSL return, statistics on WB6IUH 50 Dec 68 Radio addiction: case history of an W7SX 52 Jan 88 enthusiast Reflections: Novice enhancement and the W9JUV 6 Jun 88 future of amateur radio Reflections: Returning the spectrum to chaos W9JUV 6 Feb 88 courtesy of the FCC (GD 87-389) Reinartz, John L., father of shortwave radio WA6CBQ 10 Aug 81 Reminisces of old-time radio K4NW 40 Apr 71 Secret society, the W4NXD 82 May 68 Shopping for parts by mail W8FX 16 Jul 81 Shopping for parts by mail Comments K1THP 6 Dec 81 Ten commandments for technicians feature 58 Oct 76 The arduous realization W7SX 29 Dec 87 Tune in on the world WA4PYQ 12 Jun 81 Use your old magazines Foster 52 Jan 70 What is it? WA1ABP 84 May 68 Wireless Point Loma W6BLZ 54 Apr 69 Writing the Technical Article K4IPV 43 Jan 89 filters Title Author Page Issue ----- ------ ---- ----- Automatically switched half-octave filters: WB3JZO and 10 Feb 88 part 1 Watkins, Lee R. Automatically switched half-octave filters: WB3JZO and 29 Mar 88 part 2 Watkins, Lee R. Building A Digital Station NB9K 9 Apr 89 Ham Radio Techniques: "Son of Woodpecker" W6SAI 18 Feb 89 Optimizing the OF-1A Audio Filter VE7BS 38 Dec 89 Simple VHF/UHF multiple quarter-wave filters WA3EWT 37 Sep 87 Switchable bandwidth crystal filter N2DCH 22 Feb 90 Top-down filter design VE5FP 41 Jan 87 fm and repeaters Title Author Page Issue ----- ------ ---- ----- 144-MHz 5/8-wavelength, vertical antenna for K4LPQ 42 May 76 mobile 144-MHz digital synthesizers, readout display WB4TZE 47 Jul 76 144-MHz fm exciter, high performance WA2GCF 10 Aug 76 144-MHz mobile antenna (HN) W2EUQ 80 Mar 77 144-MHz synthesizer, direct output WB2CPA 10 Aug 77 144-MHz synthesizer, direct output (letter) WB6JPI 90 Jan 78 144-MHz vertical mobile antennas, 1/4 and W2LTJ, W2CQH 46 May 76 5/8 wavelength, test data on 144-MHz, 5/8-wavelength vertical antenna W1RHN 50 Mar 76 220 MHz frequency synthesizer W6GXN 8 Dec 74 450-MHz preamplifier and converter WA2GCF 40 Jul 75 Add fm to your receiver (weekender) K3NXU 74 Mar 81 Amateur fm, close look at W2YE 46 Aug 79 Amateur vhf fm operation W6AYZ 36 Jun 68 Antenna and control-link calculations for W7PUG 58 Nov 73 repeater licensing Antenna and control-link calculations for Short circuit 59 Dec 73 repeater licensing Antenna design for omnidirectional repeater N9SN 20 Sep 79 coverage Antenna, 5/8 wavelength two-meter, build WB4WSU 67 Jun 74 from CB mobile whips (HN) Antenna, 5/8-wavelength, two-meter K6KLO 40 Jul 74 Antenna, two-meter fm (HN) WB6KYE 64 May 71 Antennas, simple, for two-meter fm WA3NFW 30 May 73 Audio-amplifier and squelch unit W6AJF 36 Aug 68 Automatically controlled access to open W8GRG 22 Mar 74 repeaters Autopatch system for vhf fm repeaters W8GRG 32 Jul 74 Autopatch, simplex WB6GTM 42 Jan 83 Base station, two-meter fm W9JTQ 22 Aug 73 Carrier-operated relay K0PHF, WA0UZO 58 Nov 72 Carrier-operated relay and call monitor VE4RE 22 Jun 71 Cavity filter, 144-MHz W1SNN 22 Dec 73 Channel scanner W2FPP 29 Aug 71 Channels, three from two (HN) VE7ABK 68 Jun 71 Charger, fet-controlled for nicad batteries WA0UYK 46 Aug 75 Collinear antenna for two meters, nine- W6RJO 12 May 72 element Collinear array for two meters, 4-element W86KGF 6 May 71 Command function debugging circuit WA7HFY 84 Jun 78 Continuous tuning for fm converters (HN) W1DHZ 54 Dec 70 Control head, customizing VE7ABK 28 Apr 71 Converting low-band mobile antenna to 144 K7ARR 90 May 77 MHz (HN) Decoder, control function WA9FTH 66 Mar 77 Detectors, fm, survey of W6GXN 22 Jun 76 Deviation measurement (letter) K5ZBA 68 May 71 Deviation measurements W3FQJ 52 Feb 72 Deviation meter (HN) VE7ABK 58 Dec 70 Deviation, measuring N6UE 20 Jan 79 Digital scanner for 2-meter synthesizers K4GOK 56 Feb 78 Digital touch-tone encoder for vhf fm W7FBB 28 Apr 75 Discriminator, quartz crystal WA0JYK 67 Oct 75 Distortion in fm systems W5JJ 26 Aug 69 DTMF controller for repeaters WB4FXD 47 Sep 85 Encoder, combined digital and burst K8AUH 48 Aug 69 European vhf-fm repeaters SM4GL 80 Sep 76 External frequency programmer (HN) WB9VWM 92 Apr 79 Filter, 455-kHz for fm WA0JYK 22 Mar 72 FM advantage WA9GDZ6 38 Sep 84 Fm demodulator using the phase-locked-loop KL7IPS 74 Sep 78 Fm demodulator using the phase-locked-loop Comments 6 Apr 79 Anderson, Fm demodulator, TTL W3FQJ 66 Nov 72 Fm receiver frequency control (letter) W3AFN 65 Apr 71 FM repeater separation : 20 kHz, Yes, 15 WD5IBS 12 Aug 85 kHz, No Fm techniques and practices for vhf amateurs W6SAI 8 Sep 69 Fm techniques and practices for vhf amateurs Short circuit 79 Jun 70 Fm transmitter, solid-state two-meter W6AJF 14 Jul 71 Fm transmitter, Sonobaby, 2 meter WA0UZO 8 Oct 71 Fm transmitter, Sonobaby, 2 meter Short circuit 96 Dec 71 Fm transmitter, Sonobaby, 2 meter Crystal deck for 26 Oct 72 Sonobaby Folded whip antenna for vhf mobile - WB2IFV 50 Apr 79 Weekender Forget memory (Ni-Cd discussion) K0OV 62 Jan 83 Frequency meter, two-meter fm W4JAZ 40 Jan 71 Frequency meter, two-meter fm Short circuit 72 Apr 71 Frequency synthesizer sidebands, filter K1PCT 80 Jun 77 reduces (HN) Frequency synthesizer, for two-meter fm WB4FPK 34 Jul 73 Frequency synthesizer, inexpensive all- W0OA 50 Aug 73 channel, for two-meter fm Frequency synthesizer, inexpensive all- Correction 65 Jun 74 channel, for two-meter fm (letter) Frequency synthesizers, 600 kHz offset for K6KLO 96 Jul 78 (HN) Frequency-synthesizer, one-crystal for two- W0MV 30 Sep 73 meter fm High performance vhf fm transmitter WA2GCF 10 Aug 76 I-f system, multimode WA2IKL 39 Sep 71 IC-230 modification (HN) W8PEY 80 Mar 77 IC-255A switching circuit (HN) WB6IQV 70 Jan 83 IC-255A switching circuit (HN) Comments, WA4MZZ 8 Jun 83 Identifier, programmable repeater W6AYZ 18 Apr 69 Identifier, programmable repeater Short circuit 76 Jul 69 Improved repeater/transmitter noise K1ZJH 104 Apr 86 performance (HN) Indicator, sensitive rf WB9DNI 38 Apr 73 Interface problems, fm equipment (HN) W9DPY 58 Jun 75 Interference, scanning receiver (HN) K2YAH 70 Sep 72 Linear translators WB6JNN 14 Sep 83 Logic oscillator for multi-channel crystal W1SNN 46 Jun 73 control Magnet mount antenna, portable (HN) WB2YYU 67 May 76 Microprocessor repeater controller KB5F 56 Apr 83 Mobile antenna, magnet-mount W1HCI 54 Sep 75 Mobile antennas, vhf, comparison of W4MNW 52 May 77 Mobile operation with the Touch-Tone pad W0LPQ 58 Aug 72 Mobile operation with the Touch-Tone pad Correction 90 Dec 72 Mobile operation with the Touch-Tone pad Modification 72 Apr 73 (letter) Mobile rig, protecting from theft (C&T) W1DTY 42 Apr 76 Modulation standards for vhf fm W6TEE 16 Jun 70 Monitor receivers, two-meter fm WB5EMI 34 Apr 74 Motorola channel elements WB4NEX 32 Dec 72 Motorola fm receiver mods (HN) VE4RE 60 Aug 71 Motorola P-33 series, improving the WB2AEB 34 Feb 71 Motorola voice commander, improving W0DKU 70 Oct 70 Motrac receivers (letter) K5ZBA 69 Jul 71 Multimode transceivers, fm-ing on uhf (HN) W6SAI 98 Nov 77 Narrow-band fm system. using ICs in W6AJF 30 Oct 68 Ni-cad charger, any-state WA6TBC 66 Dec 79 Phase modulation principles and techniques VE2BEN 28 Jul 75 Phase modulation principles and techniques Correction 59 Dec 75 Phase-locked loop, tunable, 28 and 50 MHz W1KNI 40 Jan 73 Power amplifier, rf 220-MHz fm K7JUE 6 Sep 73 Power amplifier, rf, 144 MHz Hatchett 6 Dec 73 Power amplifier, rf, 144-MHz fm W4CGC 6 Apr 73 Power amplifier, two-meter fm, 10-watt W1DTY 67 Jan 74 Power supply, regulated ac for mobile fm WA8TMP 28 Jun 73 equipment Preamplifier for handi-talkies WB2IFV 89 Oct 78 Preamplifier, two meter WA2GCF 25 Mar 72 Preamplifier, two meter W8BBB 36 Jun 74 Private call system for vhf fm WA6TTY 62 Sep 77 Private call system for vhf fm (HN) W9ZTK 77 Feb 78 Private-line, adding to Heath HW-202 WA8AWJ 53 Jun 74 Push-to-talk for Styleline telephones W1DRP 18 Dec 71 Receiver alignment techniques, vhf fm K4IPV 14 Aug 75 Receiver for six and two meters, W1SNN 54 Feb 74 multichannel fm Receiver for two meter, fm W9SEK 22 Sep 70 Receiver for two meter, fm Short circuit 72 Apr 71 Receiver isolation, fm repeater (HN) W1DTY 54 Dec 70 Receiver performance of vacuum-tube vhf-fm W0GGV 52 Oct 76 equipment, how to improve Receiver performance, comparison of VE7ABK 68 Aug 72 Receiver, modular fm communications K8AUH 32 Jun 69 Receiver, modular fm communications Correction 71 Jan 70 Receiver, modular, for two-meter fm WA2GBF 42 Feb 72 Receiver, modular, for two-meter fm Added notes 73 Jul 72 Receiver, tunable vhf fm K8AUH 34 Nov 71 Receiver, vhf fm WA2GCF 6 Nov 72 Receiver, vhf fm WA2GCF 8 Nov 75 Receiver, vhf fm (letter) K8IHO 76 May 73 Receivers, setup using hf harmonics (HN) K9MM 89 Nov 78 Relay, operational-amplifier, for Motorola W6GDO 16 Jul 73 receivers Remote base, an alternative to repeaters WA6LBV, WA6FVC 32 Apr 77 Remote repeater programming using a computer KD9BC 89 Mar 86 and a telephone Repeater antenna beam tilting K7NM 29 May 83 Repeater antenna beam tilting Short circuit 80 Jul 83 Repeater channel spacing (letter) WB6JPI 90 Jan 78 Repeater control with simple timers W2FPP 46 Sep 72 Repeater control with simple timers Correction 91 Dec 72 Repeater decoder, multi-function WA6TBC 24 Jan 73 Repeater etiquette (letter) W1OLP 8 Oct 83 Repeater installation W2FPP 24 Jun 73 Repeater Interference: some corrective W4MB 54 Apr 78 actions Repeater jammers, tracking down W4MB 56 Sep 78 Repeater kerchunk eliminator WB6GTM 70 Oct 77 Repeater linking, carrier-operated relay for K0PHF 57 Jul 76 Repeater problems VE7ABK 38 Mar 71 Repeater shack temperature, remote checking ZL2AMJ 84 Sep 77 Repeater transmitter, improving W6GDO 24 Oct 69 Repeater, high-tech: designing and building WA6CAY 82 Feb 85 an FM translator Repeater, receiving system degradation K5ZBA 36 May 69 Repeaters, single-frequency fm W2FPP 40 Nov 73 Repeaters, speech synthesis for N9EE 79 Mar 84 Repeaters, three circuits for (HN) N9EE 91 Jan 84 Reset timer, automatic W5ZHV 54 Oct 74 S-meter for Clegg 27B (HN) WA2YUD 61 Nov 74 S-meter, audible, for repeaters ZL2AMJ 49 Mar 77 Satellite receivers for repeaters WA4YAK 64 Oct 75 Scanner, two-channel, for repeater monitoring W8GRG 48 Oct 76 Scanner, vhf receiver K2LZG 22 Feb 73 Scanning receiver modifications, vhf fm WA5WOU 60 Feb 74 Scanning receiver, improved for vhf fm WA2GCF 26 Nov 74 Scanning receivers for two-meter fm K4IPV 28 Aug 74 Sequential encoder, mobile fm W3JJU 34 Sep 71 Sequential switching for Touch-Tone repeater W8GRG 22 Jun 71 control Simple scope monitor for vhf fm W1RHN 66 Aug 78 Single-frequency conversion, vhf/uhf W3FQJ 62 Apr 75 Single-sideband fm, introduction to W3EJD 10 Jan 77 Single-tone decoder WA2UMY 70 Aug 78 Solar powered repeater design WB5REA/WB5RSN 28 Dec 78 Speech processor for fm transmitters G4CLF, G3RZP 76 Mar 82 Squelch circuit, another (HN) WB4WSU 78 Oct 76 Squelch circuits for transistor radios WB4WSU 36 Dec 75 Squelch, smart W6NRW 37 Jun 83 Squelch-audio amplifier for fm receivers WB4WSU 68 Sep 74 State-of-the-art auto dialer K2MWU 21 Dec 83 State-of-the-art auto dialer Short circuit 10 Feb 84 State-of-the-art auto dialer Short circuit 10 Mar 84 State-of-the-art auto dialer Comments, WD9EIA 8 Feb 88 Subaudible tone encoders and decoders W8GRG 26 Jul 78 Synthesized channel scanning WA0UZO 68 Mar 77 Synthesized two-meter fm transceiver W1CMR, K1IJZ 10 Jan 76 Synthesized two-meter fm transceiver Letter, W5GQV 78 Sep 76 Synthesizer, 144 MHz, 800-channel K4VB, WA4GJT 10 Jan 79 Synthesizer, 144-MHz CMOS K9LHA 14 Dec 79 Telephone controller for remote repeater K0PHF, WA0UZO 50 Jan 76 operation Telephone controller for remote repeater Precautions 79 Apr 77 operation (letter) Telephone controller, automatic for your K0PHF, WA0UZO 44 Nov 74 repeater Test set for Motorola radios K0BKD 12 Nov 73 Test set for Motorola radios Short circuit 58 Dec 73 Test set for Motorola radios Added note 64 Jun 74 (letter) Time-out warning indicator for fm repeater K3NEZ 62 Jun 76 users Timer, simple (HN) W3CIX 58 Mar 73 Tone burst generator for European repeaters Comments, K2MWU 8 Feb 83 Tone burst generator for European repeaters WA3EEC 88 Jul 86 Tone encoder and secondary frequency K8AUH 66 Jun 69 oscillator (HN) Tone encoder, universal for vhf fm W6FUB 17 Jul 75 Tone encoder, universal for vhf fm Correction 58 Dec 75 Tone generator, IC Ahrens 70 Feb 77 Tone generator, IC (HN) W6IPB 88 Mar 79 Tone-alert decoder W8ZXH 64 Nov 78 Tone-burst generator (HN) K4COF 58 Mar 73 Tone-burst generator for repeater accessing WA5KPG 68 Sep 77 Tone-burst generator for repeater accessing Short circuit 94 Feb 79 Tone-burst keyer for fm repeaters W8GRG 36 Jan 72 Touch-tone circuit, mobile K7QWR 50 Mar 73 Touch-tone decoder KC9C 27 Apr 83 Touch-tone decoder, IC W3OG 26 Jul 78 Touch-tone decoder, multi-function K0PHF, WA0UZO 14 Oct 73 Touch-tone decoder, third generation WA7DPX 36 Feb 80 Touch-tone decoder, third generation Short circuit 67 Sep 80 Touch-tone decoder, three-digit W6AYZ 37 Dec 74 Touch-tone decoder, three-digit Circuit board for 62 Sep 75 Touch-tone encoder W3HB 41 Aug 77 Touch-tone hand-held K7YAM 44 Sep 75 Touch-tone handset, converting slim-line K2YAH 23 Jun 75 Transceiver for two-meter fm, compact W6AOI 36 Jan 74 Transmitter for two meters, phase-modulated W6AJF 18 Feb 70 Transmitter, two-meter fm W9SEK 6 Apr 72 Tunable receiver modification for vhf fm WB6VKY 40 Oct 74 Two-meter synthesizer, direct output WB2CPA 10 Aug 77 Two-meter synthesizer, direct output Short circuit 68 Dec 77 Up/down repeater-mode circuit for two-meter WB4PHO 40 Jan 77 synthesizers, 600 kHz Up/down repeater-mode circuit for two-meter Short circuit 94 May 77 synthesizers, 600 kHz Vertical antennas, truth about 5/8-wavelength K0DOK 48 May 74 Vertical antennas, truth about 5/8-wavelength Added note 54 Jan 75 (letter) Weather monitor receiver, retune to two- W3WTO 56 Jan 75 meter fm (HN) Whip, 5/8-wave, 144 MHz (HN) VE3DDD 70 Apr 73 ZIA connection: a multi-state 2-meter K5XY 30 Oct 86 repeater link hazards Title Author Page Issue ----- ------ ---- ----- AC line transient protection N6JH 59 Apr 86 Common-point Grounding: Lightning Protection K17JH 24 Jul 89 for Repeaters Electric shock, the effects and treatment of NY6U 85 Mar 84 Lightning and electrical transient protection KR7L 73 Dec 83 Practically Speaking: safety standdown for K4IPV 48 Jun 90 those who service ham gear Protect Your Amateur Station from Lightning KY9L 25 Sep 89 When hazardous waste comes home: PCBs in the KALLBO 42 Dec 83 ham shack integrated circuits Title Author Page Issue ----- ------ ---- ----- 2716 EPROM programmer N3CA 32 Apr 82 555 timer operational characteristics WB6FOC 32 Mar 79 Active filters K6JM 70 Feb 78 Amateur uses of the MC1530 IC W2EEY 42 May 68 Amplifiers, broadband IC W6GXN 36 Jun 73 Applications, potpourri of IC W1DTY, Thorpe 8 May 69 Audio-power ICs W3FQJ 64 Jan 76 Balanced modulator, an integrated-circuit K7QWR 6 Sep 70 Binary coded decimal addition (HN) WA9HUV 66 Apr 82 Binary coded decimal addition (HN) Comment, 8 Dec 82 Schiffler, C L logic circuit W1DTY 4 Mar 75 Cmos logic circuits W3FQJ 50 Jun 75 CMOS programmable divide-by-N counter (HN) W7BZ 94 Jan 78 Counter gating sources K6KA 48 Nov 70 Counter reset generator (HN) W3KBM 68 Jan 73 Digital counters (letter) W1GGN 76 May 73 Digital ICs, part I W3FQJ 41 Mar 72 Digital ICs, part II W3FQJ 58 Apr 72 Digital ICs, part II Correction 66 Nov 72 Digital mixers WB8IFM 42 Dec 73 Digital multivibrators W3FQJ 42 Jun 72 Digital oscillators and dividers W3FQJ 62 Aug 72 Digital readout station accessory, part I K6KA 6 Feb 72 Digital station accessory, part II K6KA 50 Mar 72 Digital station accessory, part III K6KA 36 Apr 72 Divide-by-n counters, high-speed W1OOP 36 Mar 76 Electronic counter dials, IC K6KA 44 Sep 70 Electronic keyer, cosmos IC WB2DFA 6 Jun 74 Electronic keyer, cosmos IC Short circuit 62 Dec 74 Emitter-coupled logic W3FQJ 62 Sep 72 Exar XR-205 waveform generator as W6WR 79 Jul 79 capacitance meter (HN) Flip-flops W3FQJ 60 Jul 72 Flop-flip, using (HN) W3KBM 60 Feb 72 FSK tone generator using an IC tone dialer Nagel, David 88 Apr 83 (HN) Function generator, IC W1DTY 40 Aug 71 Function generator, IC K4DHC 22 Jun 74 Gain control IC for audio signal processing Jung 47 Jul 77 I L logic circuits W1DTY 4 Nov 75 IC arrays K6JM 42 Sep 78 IC op amp update Jung, Waiter 62 Mar 78 IC power (HN) W3KBM 68 Apr 72 IC tester, TTL WA4LCO 66 Aug 76 IC-regulated power supply for ICs W6GXN 28 Mar 68 Integrated circuits, part I W3FQJ 40 Jun 71 Integrated circuits, part II W3FQJ 58 Jul 71 Integrated circuits, part III W3FQJ 50 Aug 71 Logic families, IC W6GXN 26 Jan 74 Logic monitor (HN) WA5SAF 70 Apr 72 Logic monitor (HN) Correction 91 Dec 72 Logic test probe VE6RF 53 Dec 73 Logic test probe (HN) Rossman 56 Feb 73 Logic test probe (HN) Short circuit 58 Dec 73 Low-cost linear ICs WA7KRE 20 Oct 69 Low-pass filter, integrated circuit WB2KTG 59 Jan 85 Missent ID K6KA 25 Apr 76 Modular modulos W9SEK 63 Aug 70 Motorola MC1530 IC, amateur uses for W2EEY 42 May 68 Multi-function integrated circuits W3FQJ 46 Oct 72 National LM373, using in ssb transceiver W5BAA 32 Nov 73 Op amp (741) circuit design WA5SNZ 26 Apr 76 Op amp challenges the 741 WA5SNZ 76 Jan 78 Operational amplifiers WB2EGZ 6 Nov 69 Phase-locked loops, IC W3FQJ 54 Sep 71 Phase-locked loops, IC, experiments with W3FQJ 58 Oct 71 Plessey SL600-series ICs, how to use G8FNT 26 Feb 73 Practically Speaking: getting to know the K4IPV 77 Jan 90 logic families, part 2: CMOS Practically Speaking: Getting to Know the K4IPV 34 Dec 89 Logic Families- pt 1: TTL Removing ICs (HN) W6NIF 71 Aug 70 Seven-segment readouts, multiplexed W5NPD 37 Jul 75 Simple eeprom programmer WA2IHE 40 Jan 90 Socket label for ICs (HN) WA4WDL, WB4LJM 94 Jan 78 Ssb detector, IC (HN) K4ODS 67 Dec 72 Ssb detector, IC (HN) Correction 72 Apr 73 (letter) Ssb equipment, using TTL ICs in G4ADJ 18 Nov 75 Static electricity and modern integrated K4KEF 33 Mar 84 circuits Surplus ICs (HN) W4AYV 68 Jul 70 Sync generator, IC, for ATV W0KGI 34 Jul 75 The Guerri report W6MGI 124 Jan 86 The Guerri report: microchips W6MGI 109 Jul 86 The Guerri report: superchips come of age W6MGJ 126 Feb 85 TouchTone decoder, an Improved N6JH 24 Dec 82 Transceiver, 9-MHz ssb, IC G3ZVC 34 Aug 74 Transceiver, 9-MHz ssb, IC Circuit change 62 Sep 75 (letter) TTL ICs, simple tests for W6ALF 37 Mar 82 TTL oscillator (HN) WB6VZM 77 Feb 78 TTL sub-series ICs, how to select WA1SNG 26 Dec 77 U/ART, how it works Titus 58 Feb 76 Using ICs in a nbfm system W6AJF 30 Oct 68 Using ICs with single-polarity power supplies W2EEY 35 Sep 69 Using integrated circuits (HN) W9KXJ 69 May 69 Voltage regulators W6GXN 31 Mar 77 Voltage regulators, IC W7FLC 22 Oct 70 Voltage-regulator ICs, adjustable WB9KEY 36 Aug 75 Voltage-regulator ICs, three-terminal WB5EMI 26 Dec 73 Voltage-regulator ICs, three-terminal Added note 73 Sep 74 (letter) Vtvm, convert to an IC voltmeter K6VCI 42 Dec 74 keying and control Title Author Page Issue ----- ------ ---- ----- Accu-keyer speed readout K5MAT 60 Sep 79 Accu-Mill, keyboard interface for the Accu- WN9OVY 26 Sep 76 Keyer ASCII-to-Morse code translator Morley, Scharon 41 Dec 76 Automatic beeper for station control WA6URN 38 Sep 76 Biquad bandpass filter for CW N0DE 70 Jun 79 Biquad bandpass filter for CW Short circuit 92 Sep 79 Biquad bandpass filter for CW Comments 6 Nov 79 Break-in circuit, CW W8SYK 40 Jan 72 Break-in control system, IC (HN) W9ZTK 68 Sep 70 Bug, solid-state K2FV 50 Jun 73 Call sign identifier: programmable WB3CEH 33 Feb 85 Carrier-operated relay K0PHF, WA0UZO 58 Nov 72 Cathode key with the Heath HD-1410 (HN) K9XM, N9MX 80 Jan 82 CMOS keyer, simple HB9ABO 70 Jan 79 Cmos keying circuits (HN) WB2DFA 57 Jan 75 Code speed counter K8TT 86 Feb 79 Constant pitch monitor for cathode or grid- K4GMR 100 Sep 78 block keyed transmitters (HN) Contest keyer (HN) K2UBC 79 Apr 70 Contest keyer, programmable W7BBX 10 Apr 76 CW break-in, quieting amplifiers for W1DB 46 Jan 79 CW Identifier, versatile WB2BWJ 22 Oct 80 CW Identifier, versatile Short circuit 70 Feb 82 CW keyboard using the APPLE II computer W6WR 60 Oct 80 CW memory modification (HN) W0DLQ 93 May 81 CW operator's PAL W2YE 23 Apr 79 CW reception, enhancing through a simulated- WA1MKP 61 Oct 74 stereo technique CW regenerator for interference-free Leward, WB2EAX 54 Apr 74 communications CW sidetone (C&T) W1DTY 51 Jun 76 CW signal processor W7KGZ 34 Oct 78 CW signal processor Comments, VE3CBJ 6 Jun 79 Dasher KH6JF 68 Mar 79 Deluxe memory keyer with 3072-bit capacity W3VT 32 Apr 79 Deluxe memory keyer with 3072-bit capacity Short circuit 92 Sep 79 Deluxe memory keyer with 3072-bit capacity Short circuit 89 Jan 82 Differential keying circuit W4IYB 60 Aug 76 Electronic hand keyer K5TCK 36 Jun 71 Electronic keyer OK3IA 10 Apr 78 Electronic keyer notes (HN) ZL1BN 74 Dec 71 Electronic keyer package, compact W4ATE 50 Nov 73 Electronic keyer with random-access memory WB9FHC 6 Oct 73 Electronic keyer with random-access memory Corrections 58 Dec 74 (letter) Electronic keyer with random-access memory Increased 62 Mar 75 flexibility (HN) Electronic keyer with random-access memory Corrections 57 Jun 75 (letter) Electronic keyer with random-access memory Improvements 76 Feb 77 (letter) Electronic keyer, 8043 IC W6GXN 8 Apr 75 Electronic keyer, cosmos IC WB2DFA 6 Jun 74 Electronic keyer, cosmos IC Short circuit 62 Dec 74 Electronic keyer, IC VE7BFK 32 Nov 69 Electronic keyers, simple IC WA5TRS 38 Mar 73 End-of-transmission K generator G8KGV 58 Oct 79 Grid-block keying, simple (HN) WA4DHU 78 Apr 70 Ham radio techniques (10/84) W6SAI 106 Oct 84 Improving the WB3CEH programmable callsign KL7XO 82 Sep 87 identifier (HN) Improving transmitter keying K6KA 44 Jun 76 Key and vox clicks (HN) K6KA 74 Aug 72 Key toggle W6NRW 50 Mar 79 Keyboard electronic keyer, the code mill W6CAB 38 Nov 74 Keyer modification (HN) W9KNI 80 Aug 76 Keyer modification (HN) Comments 94 Nov 77 Keyer mods, micro-TO DJ9RP 68 Jul 76 Keyer paddle, portable WA5KPG 52 Feb 77 Keyer with memory (letter) Hansen, William 6 Dec 79 Keyer, simple, compact QRP (weekender) W5FG 82 Oct 84 Keyer, single-chip, for QRP (weekender) W3HVK 70 Oct 82 Keying the Heath HG-10B vfo (HN) K4BRR 67 Sep 70 Keying, paddle, Siamese WA5KPG 45 Jan 75 Latch circuit, dc W0LPQ 42 Aug 75 Latch circuit, dc Correction 58 Dec 75 Latching relay control (HN) K6HTM 94 May 83 Low-power keyer and interface K1HOP 68 Feb 83 Low-power keyer and interface Short circuit 97 Aug 83 Memo-key WA7SCB 58 Jun 72 Memory accessory, programmable for WA9LUD 24 Aug 75 electronic keyers Memory keyer, (letter) W3VT 6 Feb 80 Memory keyer, 2048-bit (HN) GW4CQT 73 Jun 80 Memory keyer, W7BBX (letter) SP2DX 6 Jan 80 Microcomputer-based contest keyer K9CW 36 Jan 81 Microprocessor repeater controller KB5F 56 Apr 83 Micros and VHF beacons transmit messages K9EI 51 Jul 85 automatically Mini-paddle K6RIL 46 Feb 69 Morse Code tutor N3SE 45 Jun 85 Morse generator, keyboard W7CUU 36 Apr 75 Morse keyboard, an easier approach to W1KZ 80 Apr 84 mastering the Morse sounder, radio controlled (HN) K6QEQ 66 Oct 71 Morse time synthesis N3SE 17 Apr 83 Oscillators, electronic keyer WA6JNJ 44 Jun 70 Paddle for electronic keyers ZS6AL 28 Apr 78 Paddle, electronic keyer (HN) KL7EVD 68 Sep 72 Paddle, homebrew keyer W3NK 43 May 69 Programmable accessory for electronic keyers K9WGN/W0USL 81 Aug 78 (HN) Programmable keyer, Autek MK-1, expanded N9AKT 58 Jan 80 memory for Push-to-talk for Styleline telephones W1DRP 18 Dec 71 QRP TLC-keyer (Weekender) K1BQT 72 Jan 90 Radio Shack ASCII keyboard encoder for micro- VE7ZV 72 Oct 80 processor-controlled CW keyboard, using (HN) RAM keyer update K3NEZ 60 Jan 76 Relay activator (HN) K6KA 62 Sep 71 Relay, transistor replaces (HN) W3NK 72 Jan 70 Relays, surplus (HN) W2OLU 70 Jul 70 Relays, undervoltage (HN) W2OLU 64 Mar 71 Remote control hf operation K5QY 32 Apr 83 Remote control hf operation Short circuit 97 Aug 83 Remote keying your transmitter (HN) WA3HOU 74 Oct 69 Remotely controlled stations: a look at a WA6EJO 48 Sep 86 successful remote base Reset timer, automatic W5ZHV 54 Oct 74 Sending CW KA4QVK 75 Jun 83 Sequential switching (HN) W5OSF 63 Oct 72 Solenoid rotary switches W2EEY 36 Apr 68 Solid-state CW T-R system W4RNL 62 Mar 83 Station control center W7OE 26 Apr 68 Step-start circuit, high-voltage (HN) W6VFR 64 Sep 71 Suppression networks, arc (HN) WA5EKA 70 Jul 73 Ten-Tec 645 ultramatic keyer mods (HN) K4JST 70 Dec 82 Testing baluns K4KJ 30 Aug 83 Time base, calibrated electronic keyer W1PLJ 39 Aug 75 Timer, ten-minute (HN) DJ9RP 66 Nov 76 Transceiver diplexer: an alternative to N6RY 71 Dec 80 relays Transistor switching for electronic keyers W3QBO 66 Jun 74 (HN) Transmit/receive switch PIN diode W9KHC 10 May 76 Transmitter switching, solid-state W2EEY 44 Jun 68 Typewriter-type electronic keys, further W6PRO 26 Mar 70 automation for Vox and mox systems for ssb Belt 24 Oct 68 Vox keying (HN) VE7IG 83 Dec 69 Vox, IC W2EEY 50 Mar 69 Vox, versatile W9KIT 50 Jul 71 Vox, versatile Short circuit 96 Dec 71 WPM readout for deluxe memory keyer WA1OEH 50 Apr 82 (weekender) measurements and test equipment Title Author Page Issue ----- ------ ---- ----- 1.5GHz prescaler, divide by 4 N6JH 88 Dec 78 2.3GHz prescaler N6JH 21 Jan 87 A-m modulation monitor, vhf (HN) K7UNL 67 Jul 71 Absorption measurements, using your signal W2OUX 79 Oct 76 generator for Ac current monitor (letter) WB5MAP 61 Mar 75 AC power-line monitor W2OLU 46 Aug 71 Add a digital readout to the "poor man's WA2PZO 84 Sep 88 spectrum analyzer" AFSK generator, crystal-controlled K7BVT 13 Jul 72 AFSK generator, phase-locked loop K7ZOF 27 Mar 73 Amateur frequency measurements K6KA 53 Oct 68 An i-f sweep generator W2ZUC 101 Jan 87 An rf voltmeter G4COL 65 Nov 87 Antenna and transmission line measurement W4OQ 36 May 74 techniques Antenna bridge calculations Anderson, 34 May 78 Leonard H. Antenna bridge calculations (letter) W5QJR 6 May 78 Antenna gain, measuring K6JYO 26 Jul 69 Antenna matcher W4SD 24 Jun 71 Automatic noise-figure measurements (Repair W6NBI 40 Aug 78 Bench) Base step generator WB4YDZ 44 Jul 76 Battery charger sensor W3BYM 54 Dec 82 BC221, unusual VK2ZH 22 Jan 83 Beta master, the K8ERV 18 Aug 68 Bridge for antenna measurements, simple W2CTK 34 Sep 70 Bridge measurements, the half-wave K4KI 108 Nov 84 transmission line in (HN) Bridge, noise, for impedance measurements YA1GJM 62 Jan 73 Bridge, noise, for impedance measurements Added notes 66 May 74 Bridge, noise, for impedance measurements Added notes 60 Mar 75 Bridge, rf noise WB2EGZ 18 Dec 70 Broadband reflectometer and power meter VK2ZTB, WB2ZZO 28 May 79 Build this simple L-C checker W5FG 19 Dec 88 Calibrating ac scales on the vtvm, icvm and W7KQ 48 Sep 76 fet voltmeter Calibrating series-resistance capacitance Caron 27 Dec 88 bridges (HN) Calibrator, plug-in IC K6KA 22 Mar 69 Calibrators and counters K6KA 41 Nov 68 Capacitance measurements with a frequency Moran, John 62 Oct 79 counter - Weekender Capacitance meter Mathieson, P. H. 51 Feb 78 Capacitance meter, (simplified), WA3CPH 54 Mar 80 improvements to Capacitance meter, digital K4DHC 20 Feb 74 Capacitance meter, direct reading, for W9DJZ 14 Oct 71 electrolytics Capacitance meter, direct-reading ZL2AUE 46 Apr 70 Capacitance meter, direct-reading W6MUR 48 Aug 72 Capacitance meter, direct-reading Short circuit 64 Mar 74 Capacitance meter, direct-reading WA5SNZ 32 Apr 75 Capacitance meter, direct-reading Added note 31 Oct 75 Capacitance meter, simplified WA5SNZ 78 Nov 78 Capacitive-reactance meter multiplier (HN) K4KI 89 Apr 83 Coaxial cable, checking (letter) W2OLU 68 May 71 Coaxial-line loss, measuring with a W2VCI 50 May 72 reflectometer Continuity bleeper for circuit tracing G3SBA 67 Jul 77 Continuity tester, simple WD6GMB 130 Sep 85 Converter, mosfet, for receiver WA9ZMT 62 Jan 71 instrumentation Counter control pulses (HN) W9LL 70 Apr 80 Counter gating sources K6KA 48 Nov 70 Counter readouts, switching (HN) K6KA 66 Jun 71 Counter reset generator (HN) W3KBM 68 Jan 73 Counter, compact frequency K4EEU 16 Jul 70 Counter, compact frequency Short circuit 72 Dec 70 Counters: a solution to the readout problem WA0GOZ 66 Jan 70 CRT intensifier for RTTY K4VFA 18 Jul 71 Crystal checker W6GXN 46 Feb 72 Crystal test oscillator and signal generator K4EEU 46 Mar 73 Crystal-controlled frequency markers (HN) WA4WDK 64 Sep 71 Cubical quad measurements W4YM 42 Jan 69 Current monitor mod Letter 61 Mar 75 Curve master, the K8ERV 40 Mar 68 Decade standards, economical (HN) W4ATE 66 Jun 71 Deluxe logic probe M. Wilde 74 Jan 87 Detailed look at probes Martin, and Davis 75 Sep 85 Detector, logarithmic, wideband PA0CX, DJ0SA 75 Jul 85 Deviation, measuring N6UE 20 Jan 79 Digital capacitance meter K4GOK 66 Aug 80 Digital counters (letter) W1GGN 76 May 73 Digital field strength meter N4TMI 30 May 90 Digital readout station accessory, part I K6KA 6 Feb 72 Digital station accessory, part II K6KA 50 Mar 72 Digital station accessory, part Ill K6KA 36 Apr 72 Diode noise source for receiver noise W6NBI 32 Jun 79 measurements Diode tester W6DOB 46 Jan 77 Diode tester (HN) W2OLU 90 Apr 83 Dip meters, a new look at W6GXN 25 Aug 81 Dip-meter converter for VLF W4YOT 26 Aug 79 Dipper without plug-in coils W6BLZ 64 May 68 Dual wattmeter, 50-500 MHz WB4EHS 67 Jul 85 Dummy load and rf wattmeter, low-power W2OLU 56 Apr 70 Dummy load low-power vhf WB9DNI 40 Sep 73 Dummy loads W4MB 40 Mar 76 Dummy loads, experimental W8YFB 36 Sep 68 Dynamic transistor tester (HN) VE7ABK 65 Oct 71 Electrical calibration standards Martin, Vaughn D. 10 Oct 83 Electrolytic capacitors, measurement of (HN) W2NA 70 Feb 71 Electrolytic capacitors, measuring KP4DIF 24 Sep 80 capacitance of Elmer's notebook: power measurements W1SL 100 Jan 88 Elmer's Notebook: Simple Instruments RF W1SL 91 Nov 89 Output Monitor Elmer's notebook: standing wave ratio- what W1SL 98 Feb 88 does it mean? Elmer's Notebook: Test Equipment-Easy and W1SL 86 Oct 89 Useful Elmer's Notebook: Visual Aids- Oscilloscopes W1SL 92 Jun 89 EMI/RFI shielding: new techniques part1 Martin, Vaughn D. 72 Jan 84 EMI/RFI shielding: new techniques part2 Martin, Vaughn D. 85 Feb 84 Extend Your DVM's Measurement Capabilities N6YC 72 Oct 89 Extended-range VU meter WB6JNN 59 Sep 86 Field strength meter, sensitive K4KI 51 Jan 85 Field-strength meter for the high-frequency WB6AFT 42 Jul 81 Amateur bands Filter tester, simple (HN) W6XM 116 Dec 84 Fm deviation measurement (letter) K5ZBA 68 May 71 Fm deviation measurements W3FQJ 52 Feb 72 Fm frequency meter, two-meter W4JAZ 40 Jan 71 Fm frequency meter, two-meter Short circuit 72 Apr 71 Frequencies, counted (HN) K6KA 62 Aug 74 Frequency and level standard PA0CX 10 Jan 86 Frequency and level standard Comments, WA8LLY 9 Jun 86 Frequency calibration using 60 kHz WWVB W4ZPS 45 Mar 88 Frequency calibrator, general coverage W5UQS 28 Dec 71 Frequency calibrator, how to design W3AEX 54 Jul 71 Frequency counter, "smart" WA5VQK 41 Oct 84 Frequency counter, "smart" Short circuit 126 Apr 85 Frequency counter, 50 MHz, 6 digit WB2DFA 18 Jan 76 Frequency counter, 50 MHz, 6 digit Comment 79 Apr 77 Frequency counter, capacitance-measurement W1ZUC 44 Apr 80 accuracy for Frequency counter, capacitance-measurement Short circuit 67 Sep 80 accuracy for Frequency counter, CMOS W2OKO 22 Feb 77 Frequency counter, CMOS Short circuit 94 May 77 Frequency counter, front-ends for a 500-MHz K4JIU 30 Feb 78 Frequency counter, high-impedance preamp and I4YAF 47 Feb 78 pulse shaper for Frequency counter, how to improve the W1RF 26 Oct 77 accuracy of Frequency counter, K4JIU, modifications for K4JIU 65 Mar 80 (HN) Frequency counter, miniature K5WKQ 34 Oct 79 Frequency counter, modify for direct WA1SNG 26 Feb 78 counting to 100 MHz Frequency counter, simple (HN) W2QBR 81 Aug 78 Frequency counter, simplifying W1WP 22 Feb 78 Frequency counter, simplifying Short circuit 94 Feb 79 Frequency counters, high-sensitivity W1CFI 80 Oct 78 preamplifier for Frequency counters, uhf and microwave W6NBI 34 Sep 79 Frequency counters, understanding and using W6NBI 10 Feb 78 Frequency measurement of received signals W4AAD 38 Oct 73 Frequency measurement, vhf, with hf receiver W3LB 90 May 77 and scaler (HN) Frequency meter, crystal controlled (HN) W5JSN 71 Sep 69 Frequency scaler, 500-MHz W6URH 32 Jun 75 Frequency scaler, divide-by-ten K4EEU 26 Aug 70 Frequency scaler, divide-by-ten Short circuit 72 Apr 71 Frequency scaler, divide-by-ten W6PBC 41 Sep 72 Frequency scaler, divide-by-ten Correction 90 Dec 72 Frequency scaler, divide-by-ten Added comments 64 Nov 73 (letter) Frequency scaler, uhf (11C90) WB9KEY 50 Dec 75 Frequency scalers, 1200-MHz WB9KEY 38 Feb 75 Frequency standard (HN) WA7JIK 69 Sep 72 Frequency standard, universal K4EEU 40 Feb 74 Frequency standard, universal Short circuit 72 May 74 Frequency synthesizer, high-frequency K2BLA 16 Oct 72 Frequency-rnarker standard using cmos W4IYB 44 Aug 77 Frequency-shift meter, RTTY VK3ZNV 33 Jun 70 Function generator, IC W1DTY 40 Aug 71 Function generator, IC K4DHC 22 Jun 74 Function generator, integrated circuit N3FG 30 Aug 80 Function/units indicator using LED displays K0FOP 58 Mar 77 Gallon-size dummy load W4MB 74 Jun 79 Gate-dip meter W3WLX 42 Jun 77 Gdo, new uses for K2ZSQ 48 Dec 68 Grid current measurement in grounded-grid W6SAI 64 Aug 68 amplifiers Grid-dip meter, no-cost W8YFB 87 Feb 78 Grid-dip oscillator, solid-state conversion W6AJZ 20 Jun 70 of Ground rod resistance K4MT 95 Jul 84 Ground rod resistance Comments 8 Sep 84 Ham radio techniques: time and frequency W6SAI 37 Jun 88 station WWVS, minibeam design, etc Harmonic generator (HN) W5GDQ 76 Oct 70 High-frequency receiver performance G4OBU 33 Feb 88 High-impedance Rotary Step Attenuator N2DCH 24 Feb 89 HP-IB greatly simplified Martin, Vaughn D. 65 Mar 88 I-f alignment generator 455-kHz WA5SNZ 50 Feb 74 IF sweep generator, compact PA0CX, DJ0SA 35 Jun 85 Impedance bridge (HN) W6KZK 67 Feb 70 Impedance bridge measurement errors and K4KJ 22 May 79 corrections Impedance bridge, low-cost RX W8YFB 6 May 73 Impedance bridge, simple WA9QJP 40 Apr 68 Impedance matching WB2NTQ 85 Jul 83 Impedance, measuring with swr bridge WB4KSS 46 May 75 Impulse generator, pulse-snap diode Siegal, Turner 29 Oct 72 Inductance meter, easy-to-build W6XM 76 Apr 82 Inductance meter, easy-to-build Comments, WB2LAO 8 Sep 82 Inductance meter, easy-to-build Short circuit 79 Oct 82 Instrumentation and the ham VE3GFN 28 Jul 68 Instrumentation series: oscilloscopes K7OWJ 49 Apr 90 Introduction to waveform generators - part 3 K4IPV 63 Jan 90 Introduction to Waveform Generators- pt 1 K4IPV 62 Sep 89 Introduction to Waveform Generators- pt 2 K4IPV 82 Dec 89 K4EEU frequency standard, battery backup for N4BA 68 Jul 81 (HN) Keeping an Eye on Your Sideband PEP-The GW4NAH 17 Sep 89 Weekender L and C measurements WB6ZLN 117 Oct 84 L, C, R bridge, universal W6AOI 54 Apr 76 l-f sweep generator K4DHC 10 Sep 73 LED millivoltmeter (Weekender) W0JF 82 Mar 90 Light-bulb dummy loads (HN) W6HPH 74 Oct 81 Line-voltage monitor (HN) WA8VFK 66 Jan 74 Linearity meter for ssb amplifiers W4MB 40 Jun 76 lntermodulation-distortion measurements on W6VFR 34 Sep 74 ssb transmitters Logic mate N9CZK 57 Jan 83 Logic monitor (HN) WA5SAF 70 Apr 72 Logic monitor (HN) Correction 91 Dec 72 Logic probe K9CW 83 Feb 79 Logic probe (HN) Rozenthal, J. 91 Apr 83 Logic probe, digital N6UE 38 Aug 80 Logic test probe VE6RF 53 Dec 73 Logic test probe (HN) Rossman 56 Feb 73 Logic test probe (HN) Short circuit 58 Dec 73 Low-cost spectrum analyzer with kilo-buck W4UCH 82 Sep 86 features Makeshift test equipment (HN) W7FS 77 Sep 68 Measuring inductances K6HIK 85 Jul 83 Measuring noise figure K2BLA 26 Jan 84 Measuring small values W6SDM 74 Aug 83 Meter amplifier, electronic WA9HUV 38 Dec 76 Meter amplifiers, calibrating W4OHT 80 Sep 78 Meter interface, high-impedance Laughlin 20 Jan 74 Meters, testing unknown (HN) W1ONC 66 Jan 71 Microfarad Counter,The PA0CX 85 May 89 Microphone calibration NY6U 73 Jun 84 Microwave marker generator, 3cm band (HN) WA4WDL 69 Jun 76 Milliammeters, how to use W4PSJ 48 Sep 75 Mini-spotter frequency checker W7OE 48 May 68 Monitorscope, miniature WA3FIY 34 Mar 69 Monitorscope, RTTY W3CIX 36 Aug 72 Multi-box (HN) W3KBM 68 Jul 69 Multi-featured function generator WA7IRY 9 Apr 88 Multiplexed counter displays (HN) K1XX 87 May 78 Multitester (HN) W1DTY 63 May 71 NBS time and frequency survey NBS 45 Jun 87 Noise bridge calculations with TI 58/59 WD4GA1 45 May 78 calculators Noise bridge construction (letter) OH2ZAZ 8 Sep 78 Noise bridge, antenna (HN) K8EEG 71 May 74 Noise bridge, precision K2ST 51 Mar 83 Noise bridge, precision Comments 8 Jun 83 Noise bridge, precision Short circuit 97 Aug 83 Noise figure measurements W6NBI 40 Aug 78 Noise figure measurements Comments, 6 Aug 79 WB5LHV, W6NBI Noise figure, vhf, estimating WA9HUV 42 Jun 75 Noise generator, 1296-MHz W3BSV 46 Aug 73 Noise generators, using (HN) K2ZSQ 79 Aug 68 Noise-figure measurements for vhf WB6NMT 36 Jun 72 Noise-figure meter, automatic, for K9IMM 12 Feb 81 preamplifiers and converters Novel Methods for Measuring Cable Attenuation OE2APM 65 May 89 Ode to older oscilloscopes KR6A 69 Jan 88 Ohmmeter, wide-range Bailey, John T. 53 Jan 84 Oscillator, audio W6GXN 50 Feb 73 Oscillator, frequency measuring W6IEL 16 Apr 72 Oscillator, frequency measuring Added notes 90 Dec 72 Oscillator, two-tone, for ssb testing W6GXN 11 Apr 72 Oscilloscope calibrator (HN) K4EEU 69 Jul 69 Oscilloscope voltage calibrator W6PBC 54 Aug 72 Oscilloscope, putting it to work Allen 64 Sep 69 Oscilloscope, troubleshooting amateur gear Allen 52 Aug 69 with Panoramic adaptor spectrum analyzer design Comments, K2CBY 12 Sep 83 notes Panoramic adaptor spectrum analyzer design WA6NCX/1 26 Sep 83 notes Panoramic adaptor spectrum analyzer design Short circuit 70 Oct 83 notes Panoramic reception, simple W2EEY 14 Sep 68 Peak envelope power, how to measure W5JJ 32 Nov 74 PEP output power measurement VK3AFO 10 Jun 83 PEP output power measurement Comments, K4KYV 12 Sep 83 PEP Wattmeter WA1SPI 76 Oct 89 Phase meter, rf VE2AYU, Korth 28 Apr 73 Power meter, rf K8EEG 26 Oct 73 Power meter, rf, how to use (repair bench) W6NBI 44 Apr 77 Practically speaking K4IPV 79 Dec 85 Practically Speaking: analog meter K4IPV 68 Mar 90 movements: how to use them Practically Speaking: Antenna System K4IPV 82 Feb 89 Instruments Practically speaking: build your own time- K4IPV 69 Jun 87 domain refiectometer Practically speaking: building 'the poor K4IPV 99 Mar 87 man's spectrum analyzer' Practically speaking: function generator K4IPV 89 Jan 87 circuits - part2 Practically speaking: generating low i-f K4IPV 49 Dec 87 frequencies Practically Speaking: More Digitally K4IPV 78 Jul 89 Generated Sawtooth Plus Triangle Waves Practically Speaking: review of a low cost K4IPV 64 Feb 90 commercial spectrum analyzer Practically speaking: revisiting 'the poor K4IPV 49 Sep 87 man's spectrum analyzer' Practically Speaking: RF Wattmeters and K4IPV 75 Mar 89 Antenna VSWR Meters Practically Speaking: some analog meter K4IPV 36 Apr 90 applications Practically Speaking: Test Equipment for K4IPV 76 Nov 89 Digital Electronics Practically speaking: testing diodes K4IPV 65 Feb 87 Practically speaking: troubleshooting DC K4IPV 57 Oct 87 power supplies with an oscilloscope Practically speaking: using antenna noise K4IPV 69 May 86 bridge Practically speaking: using the digital K4IPV 47 Apr 88 frequency counter- some pitfalls Practically speaking: using the multimeter K4IPV 43 Jul 86 Practically speaking: using the right K4IPV 95 Jun 86 multimeter Practically speaking: using voltage K4IPV 49 Nov 87 comparators Pre-scaler, vhf (HN) W6MGI 57 Feb 73 Precision capacitor W4BRS 61 Mar 68 Precision crystal frequency checker N4TMI 44 Jun 90 (Weekender) Prescaler, 1-GHz, for frequency counters W6NBI 84 Sep 78 Prescaler, 600-Hz, for use with electronic WA1SPI 50 Apr 80 counters Prescaler, Improvements for W6PBC 30 Oct 73 Prescaler, vhf, for digital frequency K4GOK 32 Feb 76 counters Probe, sensitive rf (HN) W5JJ 61 Dec 74 Q measurement G3SBA 49 Jan 77 Q Meters W3QOM 49 Dec 89 QRP wattmeter (HN) W6XM 110 Jul 84 Radio Shack meters, internal resistance Katzenberger 94 Nov 77 Receiver alignment Allen 64 Jun 68 Receiver sweep alignment system WB6BIH 124 Nov 84 Reflected power limiter K4KI 63 Jul 88 Reflectometers K1YZW 65 Dec 69 Regenerative detectors and a wideband W8YFB 61 Mar 70 amplifier for experimenters Repairs, thinking your way through Allen 58 Feb 71 Required dynamic range and design guides for DJ2LR 70 Nov 83 EMI/RFI test receivers Resistance standard, simple (HN) W2OLU 65 Mar 71 Resistance values below 1 ohm, measuring W4OHT 66 Sep 77 Resistance values below 1 ohm, measuring W1PT 91 Jan 78 (letter) Resistance values, measuring below 1 ohm W4OHT 66 Sep 77 Resistor decades, versatile W4ATE 66 Jul 71 Rf current probe (HN) W6HPH 76 Oct 68 Rf current readout, remote (HN) W4ATE 87 May 78 Rf detector, sensitive WB9DNI 38 Apr 73 Rf generator clip W1DTY 58 Mar 68 Rf power meter, low-level W5WGF 58 Oct 72 Rf power meter, part 1: instrument N6YC 70 May 81 description and construction Rf power meter, part 2: measurements and N6YC 55 Jun 81 measurement accessories Rf power meter, part 2: measurements and Comments, W3NQN 6 Oct 81 measurement accessories Rf signal generator, solid-state VE5FP 42 Jul 70 Rf wattmeter, accurate low power WA4ZRP 38 Dec 77 RTTY monitor scope, solid-state WB2MPZ 33 Oct 71 RTTY signal generator W7ZTC 23 Mar 71 RTTY signal generator Short circuit 96 Dec 71 RTTY test generator WB9ATW 64 Jan 78 RTTY test generator (HN) W3EAG 67 Jan 73 RTTY test generator (HN) W3EAG 59 Mar 73 RX impedance bridge W2CTK 34 Sep 70 RX impedance bridge, low-cost W8YFB 6 May 73 RX noise bridge, improvements to W6BXI, W6NKU 10 Feb 77 RX noise bridge, improvements to Comments 100 Sep 77 S-meter readings (HN) W1DTY 56 Jun 68 Safer suicide cord (HN) K6JYO 64 Mar 71 Sampling network, rf - the milli-tap W6QJW 34 Jan 73 Sensitive LF or HF field-strength meter K1RGO 67 Sep 86 Sensitive RF Voltmeter, The Weekender: N2DCH 62 Jul 89 Signal generator, tone moduiated for two and WA8OIK 54 Nov 69 six meters Signal generator, wide range W6GXN 18 Dec 73 Signal injection in ham receivers Allen 72 May 68 Signal source for 432 and 1296 MHz K6RIL 20 Sep 68 Signal tracing in ham receivers Allen 52 Apr 68 Simple DC Amplifier for Your Meter W0JF 10 Jun 89 Simple low-cost comb generator frequency Martin, Larry 78 Jul 88 calibrator Slotted line, how to use (repair bench) W6NBI 58 May 77 Slow-scan tv test generator K4EEU 6 Jul 73 Solid-state replacements AK7N 46 Apr 83 Spectrum analysers, understanding WA5SNZ 50 Jun 74 Spectrum analyzer for ssb W3JW 24 Jul 77 Spectrum analyzer tracking generator W6URH 30 Apr 78 Spectrum analyzer, dc-100 MHz W6URH 16 Jun 77 Spectrum analyzer, dc-100 MHz Short circuit 69 Dec 77 Spectrum analyzer, dc-100 MHz Short circuit 94 Feb 79 Spectrum analyzer, four channel W9IA 6 Oct 72 Spectrum analyzer, microwave N6TX 34 Jul 78 Ssb, signals, monitoring W6VFR 35 Mar 72 Standing wave indicator GW8FKB 97 Nov 83 Sweep generator, how to use Allen 60 Apr 70 Sweep generator, stable wideband W7BAR 18 Jun 81 Sweep generator, stable wideband Short circuit 84 Nov 81 Sweep response curves for low-frequency l-f's Allen 56 Mar 71 Switch-off flasher (HN) Thomas 64 Jul 71 Swr bridge WB2ZSH 55 Oct 71 Swr bridge (HN) WA5TFK 66 May 72 Swr bridge and power meter, integrated W6DOB 40 May 70 Swr bridge readings (HN) W6FPO 63 Aug 73 SWR bridges K2LB 37 Mar 86 Swr indicator, aural, for the visually K6HTM 52 May 76 handicapped Swr indicator, how to use (repair bench) W6NBI 66 Jan 77 Swr measuring at high frequencies DJ2LR 34 May 79 Swr meter W6VSV 6 Oct 70 Swr meter WB6AFT 68 Nov 78 Swr meter for the high-frequency bands WB6AFT 62 Oct 81 Swr meter for the high-frequency bands Comments, 36 Mar 82 WA4UPN, WB6AFT Swr meter, improving (HN) W5NPD 68 May 76 Swr meters, direct reading and expanded scale WA4WDK 28 May 72 Swr meters, direct reading and expanded scale Correction 90 Dec 72 Test DBMs for diode leakage WB6BIH 86 Jun 87 Test probe accessory (HN) W2IMB 89 Jul 77 Test-equipment mainframe W4MB 52 Jul 79 Tester for 6146 tubes (HN) W6KNE 81 Aug 78 Testing power tubes K4IPV 60 Apr 78 The Guerri report: signal processing W6MGI 156 Dec 84 Time and frequency standards: part1 Martin, Vaughn D. 36 Nov 83 Time and frequency standards: part2 Martin, Vaughn D. 31 Dec 83 Time-base oscillators, improved calibration WA7LUJ, WA7KMR 70 Mar 77 Time-domain reflectometry, experimenter's WA0PIA 22 May 71 approach to Toroid permeability meter W6RJO 46 Jun 77 Transconductance tester for fets W6NBI 44 Sep 71 Transformer shorts W6BLZ 36 Jul 68 Transistor and diode tester ZL2AMJ 65 Nov 70 Transistor curve tracer WA9LCX 52 Jul 73 Transistor curve tracer Short circuit 63 Apr 74 Transistor Lead Identification with a DVM K0GSS 62 Oct 89 Transistor tester WA6NIL 48 Jul 68 Transistor tester for leakage and gain W4BRS 68 May 68 Transistor tester, shirt pocket W0MAY 40 Jul 76 Transmitter tuning aid: buffer your load K4KI 52 Feb 84 with this resistive network (weekender) Transmitter tuning unit for the blind W9NTP 60 Jun 71 Trapezoidal monitor scope VE3CUS 22 Dec 69 Troubleshooting around fets Allen 42 Oct 68 Troubleshooting by resistance measurement Allen 62 Nov 68 Troubleshooting transistor ham gear Allen 64 Jul 68 Tune-up method, low duty-cycle for K4KI 62 Aug 83 transmitters (HN) Tune-up method, low duty-cycle for Comments, W5XW 11 Dec 83 transmitters (HN) Tune-up method, low duty-cycle for Comments, K4KI 11 Jan 84 transmitters (HN) Tuneup, safe, silent K4KI 123 Dec 84 Turn-off timer for portable equipment W5OXD 42 Sep 76 TVI locator W6BD 24 Aug 78 Two in one: trace doubler for CRO, and Short circuit 26 Jan 90 square wave and pulse generator (HN) Two in one: Trace doubler for CRO, and Tseng Liao 26 Dec 88 square wave and pulse generator (HN) Two-tone generator N1RM 32 Jun 82 Two-tone signal generator YB9ATA/WA7AQN 25 Feb 86 Two-tone signal generator Short circuit 45 Apr 86 Two-tone signal generator Short circuit 36 Jun 86 Two-tone signal generator (HN) K4KI 77 Sep 82 Uhf tuner tester for tv sets (HN) Schuler 73 Sep 69 Understanding noise figure Gruchalla, 89 Apr 87 Michael Using the Astro 103 as a frequency counter W4ATE 69 Jun 83 (HN) Vacuum tubes, testing high-power (HN) W2OLU 64 Mar 72 Versatile Transistor/Diode Tester W5JQE & W2YM 30 Aug 89 VHF noise bridge OE2APM/AA3K 10 Jul 86 Vhf pre-scaler, improvements for W6PBC 30 Oct 73 Vhf prescaler W8CHK 92 Jun 78 VHF/UHF world W1JR 55 Oct 84 Video monitor, inexpensive K8CG 12 Apr 83 Video monitor, inexpensive Comments, K9TA 10 Aug 83 VLF dip meter, no-adjust bias for (HN) WB3IDJ 69 Jul 80 Voltage calibrator for digital voltmeters W6NBI 66 Jul 78 Voltage calibrator for digital voltmeters Short circuit 94 Feb 79 Voltmeter calibrator, precision Woods, Hubert 94 Jun 78 Voltmeter, improved transistor, part I Maddever 74 Apr 68 Voltmeter, transistor, part II Maddever 60 Jul 68 Vom/vtvm, added uses for (HN) W7DI 67 Jan 73 VSWR and power meter, automatic W0INK 34 May 80 VSWR bridge, broadband power-tracking K1ZDI 72 Aug 79 VSWR indicator, computing WB9CYY 58 Jan 77 VSWR indicator, computing Short circuit 94 May 77 Vtvm modification W6HPH 51 Feb 69 Vtvm, convert to an IC voltmeter K6VCI 42 Dec 74 Wattmeter, low power (letter) W0DLQ 6 Jan 80 Wavemeter, indicating W6NIF 26 Dec 70 Wavemeter, indicating Short circuit 72 Apr 71 Weak-signal source, 144 and 432 MHz K6JC 58 Mar 70 Weak-signal source, stable, variable-output K6JYO 36 Sep 71 Weather radar, 10-GHZ K4TWJ 61 Sep 83 Wide range inductance meter K9EBA 52 Feb 83 Wide-range RF power meter KA8OBL 24 Apr 86 Wideband Frequency Analyzer AA4FB 9 Nov 89 Wien Bridge oscillators, voltage-controlled WA5SNZ 56 Feb 80 resistance for Wien Bridge oscillators, voltage-controlled W3PHK 52 Feb 83 Zener diode test circuit WWV receiver, simple regenerative WA5SNZ 42 Apr 73 WWV-WWVH, amateur applications for W3FQJ 53 Jan 72 WWVB signal processor W9BTI 28 Mar 76 Zener tester, low-voltage (HN) K3DPJ 72 Nov 69 microprocessors, computers and calculators Title Author Page Issue ----- ------ ---- ----- 8080 logical instructions WB4HYJ, Rony, 89 Sep 77 Titus 8080 microcomputer output instructions WB4HYJ, Rony, 54 Mar 76 Titus Accumulator I/O versus memory I/O WB4HYJ, Rony, 64 Jun 76 Titus An RS-232 to TTL interface WD4KGI 70 Nov 82 Calculator or computer - which to buy? W4MB 86 Nov 82 Computer rfi (letter) KA5HJI 8 Jun 81 Computer, satellite, for under $150 WB6POU 12 Mar 80 CW keyboard using the APPLE II computer W6WR 60 Oct 80 CW keyboard, Microprocessor controlled WB2DFA 81 Jan 78 CW trainer/keyer using a single-chip N6TY 16 Aug 79 microcomputer Data converters WA1MOP 79 Oct 77 Data retrieval program using the APPLE II WB6YHS 75 Oct 81 computer (HN) Decision, how does a microcomputer make a WB4HYJ, Titus, 74 Aug 76 Rony Device-select pulses, generating input/output WB4HYJ, Titus, 44 Apr 76 Rony Digital keyboard entry system N2YK/N2GW 92 Sep 78 Frequency counters, CMOS timing circuit for Bevel, David H. 72 Jul 82 (HN) Ham gear controller: part 1 N3CA 12 Oct 82 Ham gear controller: part 2 N3CA 25 Nov 82 How microprocessors fit into scheme of WB4HYJ, Rony, 36 Jan 76 computers and controllers Titus IC tester using the KIM-1 W3GUL 74 Nov 78 Input/output device, what is a? WB4HYJ, Rony, 50 Feb 76 Titus Interfacing a 10-bit DAC (Microprocessors) Rony, Titus, 66 Apr 78 WB4HYJ Interfacing a digital multimeter with an WB4HYJ, Rony, 66 Sep 76 8080-based microcomputer Titus Internal registers, 8080 Rony, Titus, 63 Feb 77 WB4HYJ Introduction to microprocessors WB4HYJ, Rony, 32 Dec 75 Titus Introduction to microprocessors Comments, WB4FAR 63 May 76 lnterrupts, microcomputer WB4HYJ, Rony, 66 Dec 76 Titus Logical instructions Titus, WB4HYJ, 83 Jul 77 Rony Microcomputer-based contest keyer K9CW 36 Jan 81 Microprocessor repeater controller KB5F 56 Apr 83 MOV and MVI 8080 instructions Titus, WB4HYJ, 74 Mar 77 Rony Radio Shack ASCII keyboard encoder for VE7ZV 72 Oct 80 microprocessor-controlled CW keyboard using Register pair instruction Rony, Titus, 76 Jun 77 WB4HYJ Software UAR/T, interfacing a WB4HYJ, Rony, 60 Nov 76 Titus Substitution of software for hardware WB4HYJ, Rony, 62 Jul 76 Titus UAR/T, how it works Titus 58 Feb 76 Vectored interrupts WB4HYJ, Rony, 74 Jan 77 Titus Video display, simple VK3AOH 46 Dec 78 miscellaneous technical Title Author Page Issue ----- ------ ---- ----- 24-hour clock, digital WB6AFT 44 Mar 77 Ac-line switching precautions (HN) W5PGG 69 Jul 81 Active bandpass filters WB6GRZ 49 Dec 77 Active bandpass filters Short circuit 94 Feb 79 Admittance, impedance and circuit analysis Anderson 76 Aug 77 Admittance, impedance and circuit analysis Short circuit 94 Feb 79 Air pressure, measuring across transmitting W4PSJ 89 Jan 80 tubes (HN) Alarm, wet basement (HN) W2EMF 68 Apr 72 ALC circuits, improving amplifier: part1 WA8AJN 40 Aug 84 ALC circuits, improving amplifier: part2 WA8AJN 38 Sep 84 Amateur anemometer W6GXN 52 Jun 68 Amateur anemometer Short circuit 34 Aug 68 Amateur FSK: A spectral analysis WA6NCX 42 Dec 86 Amateur Radio in Space - a bibliography W6OLO 60 Aug 68 Amateur Radio in Space - a bibliography Addenda 77 Oct 68 Amplifier for 220 MHz, stripline kilowatt W2GN 12 Apr 82 Amplitude compandored sideband WB6JNN 48 Dec 80 An Audio Patch Panel for The Multimode KB6IC 65 Dec 89 Station An Inexpensive VFO for the Yaesu FT-102 VE3RF 62 Nov 89 Analog-to-digital display converter for the KB7JW 44 Jan 81 visually handicapped Antenna masts, design for pipe W3MR 52 Sep 74 Antenna masts, design for pipe Added design 75 May 75 notes (letter) Antennas and capture area K6MIO 42 Nov 69 Audio to microwave amplifier, build your own Gruchalla, 12 Mar 84 Michael Bandpass filter design K4KJ 36 Dec 73 Bandpass filters for 50 and 144 MHz, etched W5KHT 6 Feb 71 Bandpass filters, single-pole W6HPH 51 Sep 69 Bandpass filters, top-coupled Anderson 34 Jun 77 Bandspreading techniques for resonant Anderson 46 Feb 77 circuits Bandspreading techniques for resonant Short circuit 69 Dec 77 circuits Basic electronic units W2DXH 18 Oct 68 Batteries, selecting for portable equipment WB0AIK 40 Aug 73 Battery charging (letter) Carlson 6 Nov 80 Bicycle-powered station W1BG 25 Dec 84 Bipolar-fet amplifiers W6HDM 16 Feb 76 Bipolar-fet amplifiers Comments, 76 Sep 76 Worcester Branch-line hybrid: part1 WA2EWT 107 Apr 84 Branch-line hybrid: part2 WA2EWT 93 May 84 Broadband amplifier uses mospower fet Oxner 32 Dec 76 Broadband amplifier, bipolar WB4KSS 58 Apr 75 Broadband amplifier, wide-range W6GXN 40 Apr 74 Broadband amplifier-attenuator W7SX 59 Jul 86 Build a 1-1000 MHz amplifier using MAR-4 WB6BIH 33 Jul 87 MMICS Build a QSO "beeper" KF6CU 38 Jan 88 Build your own supercharger K3OF 22 Mar 90 Build your own supercharger Short circuit 78 May 90 Buying topo maps Comments: K3SKE 9 Dec 86 Bypassing, rf, at uhf WB6BHI 50 Jan 72 Calculator, hand-held electronic, its W4MB 18 Aug 76 function and use Calculator, hand-held electronic, solving W4MB 34 Sep 76 problems with it Calculator-aided circuit analysis Anderson 38 Oct 77 Can I patent it? K2LZ 8 Mar 87 Capacitors, oil-filled (HN) W2OLU 66 Dec 72 CATVI (letter) WB4NMA 10 Aug 83 Changing fundamental constants of science Comments: W4SXK 6 Oct 87 Circuit figure of merit (letter) W2JTP 6 Dec 80 Cleaning electronic hardware (HN) WA1FHB 57 Jun 90 Clock, 24-hour digital K4ALS 51 Apr 70 Clock, 24-hour digital Short circuit 76 Sep 70 Coil-winding data, vhf and uhf K3SVC 6 Apr 71 Communicating on 474,083 GHz (light wave Comments, W6JTH 8 Jun 83 communications) Communicating on 474,083 GHz (light wave WA6EJO 10 Dec 86 communications) Communications receivers, designing for Moors 6 Feb 73 strong-signal performance Commutating filters W6GXN 54 Sep 79 Computer for the blind (HN) W8MQW 69 Jun 82 Computer-aided circuit analysis K1ORV 30 Aug 70 Contact bounce eliminators (letters) W7IV 94 Nov 77 Control By Tones ZL2SX 42 Nov 89 Converting vacuum tube equipment to solid- W2EEY 30 Aug 68 state Converting wavelength to inches (HN) WA6SXC 56 Jun 68 Crystal filters, monolithic DK1AG 28 Nov 78 Crystal use locator WA6SWR 36 Nov 80 Current flow?, which way does W2DXH 34 Jul 68 CW identifier, versatile WB2BWJ 22 Oct 80 CW identifier, versatile Short circuit 70 Feb 82 CW identifier, versatile, an improved memory WB2BWJ 24 Feb 82 for CW station, updating (HN) KM5T 77 Oct 82 Data bandwidths compared W9JD/2 50 Dec 82 Decibel, defining the Gruchalla, 51 Feb 88 Michael Design curves for loudness-compensated Tseng Liao 30 May 90 volume controls Digital clock, low-cost WA6DYW 26 Feb 76 Digital mixer, introduction WB8IFM 42 Dec 73 Digital readout system, simplified W6OIS 42 Mar 74 Double-balanced mixers W1DTY 48 Mar 68 Double-balanced modulator, broadband WA6NCT 8 Mar 70 DSB generators, audio-driven (HN) W5TRS 68 Jul 80 Earth anchors for guyed towers W5QJR 60 May 80 Earth currents (HN) W7OUI 80 Apr 70 Effective noise temperature, part 1: Michael Gruchalla 58 Feb 90 introduction and background Effective noise temperature, part 2: Michael Gruchalla 33 Mar 90 equivalent noise temperature and NF Effective radiated power (HN) VE7CB 72 May 73 Eimac 5CX1500A power pentode, notes on K9XI 60 Aug 80 Electrical units: their derivation and WB6EYV 30 Aug 76 history Electrolytic capacitors (letter) WB8MKU 6 Jun 81 Electrolytic capacitors, re-forming the K9MM 99 Jul 78 oxide layer (HN) Electromagnetic interference and the digital K3PUR 114 Sep 84 era Eliminating the matrix KH6AP 60 May 72 Elmer's notebook: The mysterious "Q" W1SL 110 Sep 88 EMI/RFI shielding: new techniques part1 Martin, Vaughn D. 72 Jan 84 EMI/RFI shielding: new techniques part2 Martin, Vaughn D. 84 Feb 84 Ezy tune, HW-5400 (HN) AB4DP 70 Jan 90 Ferrite beads W5JJ 48 Oct 70 Ferrite beads, how to use K1ORV 34 Mar 73 Fet biasing W3FQJ 61 Nov 72 Field-strength meter and volt-ohmmeter WB6AFT 70 Feb 79 Filter design, graphic W6NRW 37 Apr 84 Filter design, graphic Short circuit 13 Jul 84 Filter preamplifiers for 50 and 144 MHz, W5KHT 6 Feb 71 etched Filters (letter) W6XM 8 Feb 83 Filters (letter) Comments, W3NQW 8 Apr 83 Filters, active for direct-conversion W7ZOI 12 Apr 74 receivers Filters, bridged W6MUR 51 Oct 82 Fire extinguishers (letter) W5PGG 68 Jul 71 Fire protection Darr 54 Jan 71 Fire protection (letter) K7QCM 62 Aug 71 Fm techniques W6SAI 8 Sep 69 Fm techniques Short circuit 79 Jun 70 Four-quadrant curve tracer/analyzer W1QXS 46 Feb 79 Freon danger (letter) WA5RTB 63 May 72 Frequency counter as a synthesizer DJ2LR 44 Sep 77 Frequency divider, diode W5TRS 54 Aug 80 Frequency multipliers W6GXN 6 Aug 71 Frequency multipliers, transistor W6AJF 49 Jun 70 Frequency synchronization for scatter-mode K2OVS 26 Sep 71 propagation Frequency synthesis WA5SKM 42 Dec 69 Frequency synthesizer sidebands, filter K1PCT 80 Jun 77 reduces (HN) Frequency synthesizer, high-frequency K2BLA 16 Oct 72 Frequency synthesizers, how to design DJ2LR 10 Jul 76 Frequency synthesizers, how to design Short circuit 85 Oct 76 Frequency-lock loop WA3ZKZ 17 Aug 78 Function Generator: circuits from your K4IPV 67 Dec 86 signal generator - part 1 Gamma-matching networks, how to design W7ITB 46 May 73 Glass semiconductors W1EZT 54 Jul 69 Graphical network solutions W1NCK,W2CTK 26 Dec 69 Gridded tubes, vhf-uhf effects in W6UOV 8 Jan 69 Ground plow W1EZT 64 May 70 Ground systems, notes on K6WX 26 May 80 Grounding and wiring W1EZT 44 Jun 69 Gyrator: a synthetic inductor WB9ATW 96 Jun 78 Ham radio techniques W6SAI 63 May 84 Ham radio techniques W6SAI 106 Oct 84 Ham radio techniques W6SAI 75 Jan 85 Ham radio techniques W6SAI 59 Feb 85 Ham radio techniques W6SAI 83 Mar 85 Ham radio techniques W6SAI 66 May 85 Ham radio techniques W6SAI 51 Jun 85 Ham radio techniques W6SAI 59 Jul 85 Ham radio techniques W6SAI 90 Aug 85 Ham radio techniques W6SAI 75 Oct 85 Ham radio techniques W6SAI 67 Nov 85 Ham radio techniques, fifty years ago W6SAI 58 Jun 84 Ham radio techniques: 9CXX revisited W6SAI 83 Dec 87 Ham Radio Techniques: Antennas, GFI, W6SAI 57 Dec 89 Capacitors and Fundamentals Ham radio techniques: electron-hole theory W6SAI 67 Apr 85 exposed as fraud Ham radio techniques: I have seen the future W6SAI 91 Sep 85 and it works Ham Radio techniques: line voltage and power W6SAI 60 Jul 88 tube life Ham radio techniques: radio-frequency W6SAI 34 Nov 81 interference Ham radio techniques: radio-frequency W6SAI 30 Dec 81 interference Ham Radio techniques: the joys of TVI or, W6SAI 70 Aug 88 were you on the air last night? Handy ante switch (Weekender) W4E1N 18 Feb 90 Harmonic generator, crystal-controlled W1KNI 66 Nov 77 Harmonic output, how to predict Utne 34 Nov 74 Harmonic product detector for QRP W5FG 44 Jun 83 transceivers Harmonics, Trapping stubborn N1RC 99 Jan 86 Heatsink problems, how to solve WA5SNZ 46 Jan 74 Hf synthesizer, higher resolution for N4ES 34 Aug 78 Hybrids and couplers, hf W2CTK 57 Jul 70 Hybrids and couplers, hf Short circuit 72 Dec 70 Hydroelectric station, amateur K6WX 50 Sep 77 Hyperbolic navigation (letter) Burhans, Ralph W. 6 Feb 81 Identifying Kerchunkers and Other K9GDF 74 Dec 89 Interference Impedance bridge measurement errors and K4KJ 22 May 79 corrections Impedance matching: a brief review WD4C 49 Jun 84 Impedance measurements using an SWR meter K4QF 80 Apr 79 Impedance-matching systems, designing W7CSD 58 Jul 73 Inductance or capacitance, a method for W2CHO 68 Jul 80 measuring (HN) Infrared communications (letter) K2OAW 65 Jan 72 Injection lasers (letter) Mims 64 Apr 71 Injection lasers, high power Mims 28 Sep 71 Instant balun (letter) W8MQW 6 Aug 81 Integrated circuits, part I W3FQJ 40 Jun 71 Integrated circuits, part II W3FQJ 58 Jul 71 Integrated circuits, part III W3FQJ 50 Aug 71 Interference problems, how to solve ON4UN 93 Jul 78 Interference, hi-fi (HN) K6KA 63 Mar 75 Interference, rf W1DTY 12 Dec 70 Interference, rf WA3NFW 30 Mar 73 Interference, rf (letter) G3LLL 65 Nov 75 Interference, rf, coaxial connectors can W1DTY 48 Jun 76 generate Interference, rf, its cause and cure G3LLL 26 Jun 75 Intermittent reception due to lightning (HN) W2YW 39 Sep 88 Intermittent voice operation of power tubes W6SAI 24 Jan 71 Introduction to Waveform Generators- pt 2 K4IPV 82 Dec 89 Isotropic source and practical antennas K6FD 32 May 70 KWM 380 external control circuit (HN) WA2RUD 96 Dec 83 L-networks, how to design W7LR 26 Feb 74 L-networks, how to design Short circuit 62 Dec 74 Laser communications W4KAE 28 Nov 70 LC circuit calculations W2OUX 68 Feb 77 LED experiments W4KAE 6 Jun 70 Light-emitting diodes: theory and application WB6AFT 12 Aug 80 Lighthouse tubes for uhf W6UOV 27 Jun 69 Lightning location and detection VY1CW 25 Sep 87 Lightning protection for the amateur station K9MM 18 Dec 78 Lightning protection for the amateur station Comments, W6RTK, 6 Jul 79 WB2FBL Linear amplifier, 3CX800A7 K8RA 17 Aug 84 Linear tuning, a fresh look at (HN) W2OLU 74 Aug 80 Linear-amplifier cost efficiency W8MFL 60 Jul 80 lnductors, how to use ferrite and powdered- W6GXN 15 Apr 71 iron for lnductors, how to use ferrite and powdered- Correction 63 May 72 iron for Local-oscillator waveform effects on Robinson, Smith 44 Jun 74 spurious mixer responses Low cost linear design and construction W4MB 12 Dec 82 Low-pass filter, integrated circuit WB2KTG 59 Jan 85 Lowpass filters for solid-state linear WA0JYK 38 Mar 74 amplifiers Lowpass filters for solid-state linear Short circuit 62 Dec 74 amplifiers Lunar-path nomograph WA6NCT 28 Oct 70 Marine installations, amateur, on small boats W3MR 44 Aug 74 Matching networks, how to design Anderson, 44 Apr 78 Leonard H. Matching techniques, broadband, for WA7WHZ 30 Jan 77 transistor rf amplifiers Microprocessors, introduction to WB4HYJ, Rony, 32 Dec 75 Titus Microwave rf generators, solid-state W1HR 10 Apr 77 Microwaves, getting started in Roubal 53 Jun 72 Microwaves, Introduction W1CBY 20 Jan 72 Mini-mobile K9UQN 58 Aug 71 Mismatched transmitter loads, affect of W5JJ 60 Sep 69 Mnemonics W6NIF 69 Dec 69 Mobile theft deterrent: The Weekender W6WTU 81 Feb 87 Modifying the Trio-Kenwood TS930S WB9BXT 67 Apr 86 Monolithic RF amplifiers N6JH 22 Mar 86 More electronic units W1EZT 56 Nov 68 Multi-function integrated circuits W3FQJ 46 Oct 72 Multiplexing, the how and why of KH6N 60 Sep 81 Mysterious spur on 160 N3BEK 73 May 83 Mysterious spur on 160 Comments, K0KL, 95 Nov 83 N3BEJ Navigational aid for small-boat operators W5TRS 46 Sep 80 NE5205 wideband RF amplifier Gruchalla, 30 Sep 86 Michael NE5205 wideband RF amplifier Short circuit 72 Jan 87 Network, the ladder W2CHO 48 Dec 76 Networks, transmitter matching W6FFC 6 Jan 73 Neutralizing 572B final at 1500 watts output W2YW 63 Jun 84 (HN) Neutralizing small-signal amplifiers WA4WDK 40 Sep 70 New uses for old tuners W6WTU 25 Jan 88 Ni-cad battery charging (letter) W6NRM 6 Jul 80 Noise bridge for impedance measurements YA1GJM 62 Jan 73 Noise bridge for impedance measurements Comments, W6BXI 6 May 79 Noise cancellation circuit K1RGO 75 Mar 84 Noise figure, meaning of K6MIO 26 Mar 69 Operation upgrade: part 1 W6BNB 12 Sep 81 Operation upgrade: part 2 W6BNB 28 Oct 81 Operational amplifiers WB2EGZ 6 Nov 69 Optimum pi-network design DL9LX 50 Sep 80 Passive lumped constant 90-degree phase- K6ZV 70 Mar 79 difference networks PCB "threat" (letter) VE5UK 66 Sep 80 Peaked lowpass: a look at the ultraspherical W7ZOI 96 Jun 84 filter Personal message center AA4NX 44 Feb 90 Phase detector, harmonic W5TRS 40 Aug 74 Phase modulator, PLL (HN) VE3FHM 117 Jun 85 Phase-locked loops WB6FOC 54 Jul 78 Phase-locked loops, IC W3FQJ 54 Sep 71 Phase-locked loops, IC, experiments with W3FQJ 58 Oct 71 Phase-shift network, 90-degree, offers 2:1 K6ZV 66 Feb 80 bandwidth Phase-shift networks, design criteria for G3NRW 34 Jun 70 Photovoltaic cells: a progress report WD8AHO 52 Dec 83 Photovoltaic cells: a progress report Comments: K6KVX, 10 Feb 84 WD8AHO, etal Pi and pi-L networks W6SAI 36 Nov 68 Pi network design W6FFC 6 Sep 72 Pi network design Anderson, 36 Mar 78 Leonard H. Pi network design Comments 6 Apr 79 Anderson, Pi network design and analysis W2HB 30 Sep 77 Pi network design and analysis Short circuit 68 Dec 77 Pi network inductors (letter) W7IV 78 Dec 72 Pi networks, series-tuned W2EGH 42 Oct 71 Plasma-diode experiments Stockman, Harry 62 Feb 80 Polymer film transforms mechanical energy to WA4KFZ 55 Dec 84 electrical energy Power amplifiers, high-efficiency rf WB8LQK 8 Oct 74 Power dividers and hybrids W1DAX 30 Aug 72 Power FETS: trend for VHF amplifiers Peters, Daniel 12 Jan 84 and W7PUA Power speaker enhances mobile operation K1ZJH 83 Jan 88 (weekender) Power supplies, survey of solid-state W6GXN 25 Feb 70 Power, voltage and impedance nomograph W2TQK 32 Apr 71 Practically speaking: battery problems, pt1 K4IPV 62 Jul 87 Practically speaking: feedback K4IPV 60 May 88 Practically speaking: intermittents, pt.1 K4IPV 75 Nov 85 Practically speaking: intermittents, pt.2 K4IPV 79 Dec 85 Practically speaking: Overview of op amps- K4IPV 100 Nov 88 part 1 Practically speaking: overview of op amps- K4IPV 83 Dec 88 part 2 Practically Speaking: potpourri K4IPV 71 May 90 Practically speaking: repairing flood damage K4IPV 95 Oct 85 Prerecorded messages help the hearing W2QLI 87 Sep 84 impaired (HN) Printed-circuit boards, photofabrication of Hutchinson 6 Sep 71 Programmable calculator simplifies antenna W3DVO 70 May 74 design (HN) Programmable calculators, using W3DVO 40 Mar 75 Proportional temperature control for crystal VE5FP 44 Jan 70 ovens Pulse-duration modulation W3FQJ 65 Nov 72 Q factor, understanding W5JJ 16 Dec 74 Q systems W1IUZ 6 Nov 80 QRP operation W7OE 36 Dec 68 Quartz crystal resonators Boddaert, Peter 85 Feb 86 Quartz crystals WB2EGZ 37 Feb 79 Radiation hazard, rf W1DTY 4 Sep 75 Radiation hazard, rf Correction 59 Dec 75 Radio communications links W1EZT 44 Oct 69 Radio observatory, vhf Ham 44 Jul 74 Radio sounding system KL7GLK 42 Jul 78 Radio-frequency interference WA3NFW 30 Mar 73 Radiotelegraph translator and transcriber W7CUU, K7KFA 8 Nov 71 Ramp generators W6GXN 56 Dec 68 Rating tubes for linear amplifier service W6UOV, W6SAI 50 Mar 71 RC active filters using op amps W4YIB 54 Oct 76 RC active filters using op amps Comments, W6NRM 102 Jun 78 RC active filters using op amps Short circuit 94 Feb 79 Reactance problems, nomograph for W6NIF 51 Sep 70 Relay, inexpensive automatic send/receive W0PBV 40 May 82 Remedy for RFI (comment) K6WX 9 Jul 88 Repeater controller, microprocessor-band KB0CY 12 Mar 82 Resistor performance at high frequencies K1ORV 36 Oct 71 Resistors, frequency sensitive (HN) W8YFB 54 Dec 70 Resistors, frequency sensitive (letter) W5UHV 68 Jul 71 Resonant circuits WD4C 12 Apr 84 Rf amplifier, wideband WB4KSS 58 Apr 75 Rf autotransformers, wideband K4KJ 10 Nov 76 Rf chokes, performance above and below WA5SNZ 40 Jun 78 resonance Rf exposure WA2UMY 26 Sep 79 RF filters, Build narrowband WB4EHS 10 Mar 86 RF filters, Build narrowband Short circuit 36 Jun 86 Rf interference, suppression in telephones K6LDZ 79 Mar 77 Rf power distributor, the W3BYM 48 Dec 81 Rf power transistors, how to use WA7KRE 8 Jan 70 Rf power-detecting devices K6JYO 28 Jun 70 Rf radiation, environmental aspects of K6YB 24 Dec 79 Rfi cures: avoiding side effects WB9TQG 52 Sep 81 Rfi cures: avoiding side effects Comments WB7SYB, 6 Dec 81 WB9TQG, VE2QO RFI, solving the problems of W2YW 124 Sep 84 Rotary-dial mechanism for digitally tuned K3CU 14 Jul 80 transceivers Russian Woodpecker, the: a continuing KR7L 37 Nov 84 nuisance Safety circuit, pushbutton switch (HN) K3AFF, WA1FHB 73 Feb 77 Safety in the ham shack Darr, James 44 Mar 69 Satellite communications, first step to K1MTA 52 Nov 72 Satellite communications, first step to Added notes 73 Apr 73 (letter) Satellite picture transmission, recording W6CCN 6 Nov 68 Satellite signal polarization KH6IJ 6 Dec 72 Semiconductor curve tracing simplified W6HPH 34 Aug 80 Signal detection and communication in the WB6IOM 16 Feb 69 presence of white noise Signal-strength, measuring W2YE 20 Aug 80 Silver/silicone grease (HN) W6DDB 63 May 71 Simple circuit prevents amplifier control NO7G 30 Feb 90 relay failure (HN) Simple eeprom programmer WA2IHE 40 Jan 90 Simple formula for microstrip impedance (HN) W1HR 72 Dec 77 Single-tuned interstage networks, designing K6ZGQ 59 Oct 68 Smith chart, how to use W1DTY 16 Nov 70 Smith chart, how to use Correction 76 Dec 71 Solar activity, aspects of K3CHP 21 Jun 68 Solar energy W3FQJ 54 Jul 74 Solar power for your ham station NH6N 14 Dec 84 Solar power for your ham station Short circuit 145 Mar 85 Solid-state amplifier switching (HN) WB2HTH 75 Aug 80 Sorting and inventory of standard resistor WA6SWR 66 Jun 81 values, computer program for Speech clippers, rf, performance of G6XN 26 Nov 72 Speed of light (letter) WB2AOT 6 Apr 80 Speed of light (letter) W4MLM 6 Aug 80 Speed of light (letter) KL6WU 67 Sep 80 Speed of light, observations on, through the W7ITB 62 Jan 80 metric system Square roots, finding (HN) K9DHD 67 Sep 73 Square roots, finding (HN) Increased 55 Mar 74 accuracy (letter) Staircase generator (C&T) W1DTY 52 Jun 76 Standing-wave ratios, importance of W2HB 26 Jul 73 Standing-wave ratios, importance of Correction 67 May 74 (letter) Stress analysis of antenna systems W2FZJ 23 Oct 71 Super beep circuit for repeaters KP4AQI 48 Jul 81 Switchable bandwidth crystal filter N2DCH 22 Feb 90 Synthesizer design (letters) WB2CPA 94 Nov 77 Synthesizer system, simple (HN) AA7M 78 Jul 79 T coupler, the (HN) K3NXU 78 Nov 80 Talking clock (letter) N9KV 75 Feb 80 Talking digital readout (letter) N5AF 6 May 80 Talking digital readout for amateur N9KV 58 Jun 79 transceivers Temperature sensor, remote (HN) WA1NJG 72 Feb 77 Tetrodes, external-anode W6SAI 23 Jun 69 The Guerri report W6MGI 124 Jan 85 The Guerri report W6MGI 158 Mar 85 The Guerri report W6MGI 157 Apr 85 The Guerri report W6MGI 124 Jul 85 The Guerri report W6MGI 124 Aug 85 The Guerri report W6MGI 140 Nov 85 The Guerri report: a busy signal from space W6MGI 165 May 85 The Guerri report: computer technology W6MGI 54 Nov 84 The Guerri report: computer technology Short circuit 8 Dec 84 The Guerri report: predicting equipment W6MGI 125 Jun 85 failure The Guerri report: RF effects the good and W6MGI 142 Oct 85 the bad The Guerri report: RF power supplies achieve W6MGI 157 Sep 85 high efficiency The Guerri report: superchips come of age W6MGI 126 Feb 85 Thermoelectric power supplies K1AJE 48 Sep 68 Thermometer, electronic VK3ZNV 30 Apr 70 Three-phase motors (HN) W6HPH 79 Aug 68 Thyristors, introduction to WA7KRE 54 Oct 70 Timer, electronic (HN) W9EBT 65 Mar 82 Toroid coils, 88-mH (HN) WA1NJG 70 Jun 76 Toroidal coil inductance (HN) W3WLX 26 Sep 75 Toroids, calculating inductance of WB9FHC 50 Feb 72 Torolds, plug-in (HN) K8EEG 60 Jan 72 Transistor amplifiers, tabulated W5JJ 30 Mar 71 characteristics of Trig functions on a pocket calculator (HN) W9ZTK 60 Nov 75 Tube shields (HN) W9KNI 69 Jul 76 Tubes, surplus (letter) W2JTP 6 Aug 80 Tubes, surplus (letter) Sellati 66 Sep 80 Tuning, Current-controlled K2ZSQ 38 Jan 69 TV sweep tubes in linear service, full-blast W6SAI, W6UOV 9 Apr 68 operation of TVI locator W6BD 23 Aug 78 Two-tone signal generator YB9ATA/WA7AQN 25 Feb 86 Two-tone signal generator Short circuit 45 Apr 86 Two-tone signal generator Short circuit 36 Jun 86 Understanding computer-generated RFI NU1N 75 Mar 90 Understanding over-the-horizon radar NU1N 9 Feb 90 Understanding over-the-horizon radar Comments, AG4R 6 Apr 90 Understanding over-the-horizon radar Comments, AD1G 9 May 90 Using CAD to rewind transformers W6WTU 83 Dec 86 Using ICOM IC-32AT As a Crossband Mini- KW5O 41 Dec 89 Repeater Using spreadsheet programs for amateur radio AD1B 95 Dec 86 projects Using the Spectrum Monitor Comments: KI6DW 9 Nov 86 Vacuum-tube amplifiers, tabulated W5JJ 30 Mar 71 characteristics of Varactor tuning tips (HN) N3GN 67 Feb 81 Variable-inductance variable frequency W0YBF 50 Jul 80 oscillators Very sensitive LF or HF field-strength meter K1RGO 67 Sep 86 VHF noise bridge OE2APM/AA3K 10 Jul 86 VHF/UHF world: the VHF/UHF primer, an W1JR 112 Aug 84 introduction to filters VLF dip meter, no-adjust bias for (HN) WB3IDJ 69 Jul 80 VMOS on 1750 meters K1RGO 71 Oct 83 VSWR bridges K2LB 37 Mar 86 Warning lights, increasing reliability of W3NK 40 Feb 70 White noise diodes, selecting (HN) W6DOB 65 Apr 76 Wide-range RF power meter KA8OBL 24 Apr 86 Wideband amplifier summary DJ2LR 34 Nov 79 Wilkinson hybrids WA2EWT 12 Jan 82 Wind direction indicator, digital W6GXN 14 Sep 68 Wind generators W3FQJ 24 Jul 76 Wind loading on towers and antenna K4KJ 16 Aug 74 structures, how to calculate Wind loading on towers and antenna Added note 56 Jul 75 structures, how to calculate Y parameters, using in rf amplifier design WA0TCU 46 Jul 72 novice reading Title Author Page Issue ----- ------ ---- ----- Ac power line monitor W2OLU 46 Aug 71 Amplifiers, tube and transistor, tabulated W5JJ 30 Mar 71 characteristics of Antenna couplers, simple W2EEY 32 Jan 70 Antenna ground system Installation W1EZT 64 May 70 Antenna systems for 40 and 80 meters K6KA 55 Feb 70 Antenna tuning units W3FQJ 58 Dec 72 Antenna tuning units W3FQJ 58 Jan 73 Antenna, 80 meters, for small lot W6AGX 28 May 73 Antenna, 80-meter vertical VE1TG 26 May 70 Antenna, bobtail curtain for 40 meters VE1TG 58 Jul 69 Antenna, bow tie for 80 meters W9VMQ 56 May 75 Antenna, converted vee for 80 and 40 W6JKR 18 Dec 69 Antenna, long wire, multiband W3FQJ 28 Nov 69 Antenna, multiband phased vertical WA7GXO 33 May 72 Antenna, top-loaded 80-meter vertical VE1TG 48 Jun 69 Antenna, unidirectional for 40 meters GW3NJY 61 Jan 70 Antennas, dipole KH6HDM 60 Nov 75 Antennas, low elevation W3FQJ 66 May 73 Antennas, QRM reducing receiving types W3FQJ 54 May 71 Antennas, simple dual-band W6SAI 18 Mar 70 Antennas, simple for 80 and 40 meters W5RUB 16 Dec 72 Audio agc principles and practice WA5SNZ 28 Jun 71 Audio filter, tunable WA1JSM 34 Aug 70 Audio filters, inexpensive W8YFB 24 Aug 72 Audio module, solid-state receiver K4DHC 18 Jun 73 Batteries, selecting for portable equipment WB0AIK 40 Aug 73 Battery power W3FQJ 56 Aug 74 Battery power W3FQJ 57 Oct 74 Cheers from down under Comments: VK4OA 9 Dec 86 COSMOS integrated circuits W3FQJ 50 Jun 75 CW audio filter, simple W7DI 54 Nov 71 CW audio filter, simplest W4VNK 44 Oct 70 CW monitor, simple WA9OHR 65 Jan 71 CW reception, improved through simulated WA1MKP 53 Oct 74 stereo CW transceiver, low-power for 40 meters W7BBX 16 Jul 74 Detectors, regenerative W8YFB 61 Mar 70 Diode detectors W6GXN 28 Jan 76 Dipoles, multiband for portable use W6SAI 12 May 70 Dummy load and rf wattmeter W2OLU 56 Apr 70 Elmer's notebook: 220 MHz W1SL 91 Aug 87 Elmer's notebook: an introduction to AMTOR W1SL 101 Sep 87 Elmer's notebook: novice enhancement W1SL 95 Jun 87 Elmer's notebook: novice enhancement Short circuit 95 Aug 87 Elmer's notebook: packet radio W1SL 100 Oct 87 Elmer's Notebook: Simple Instruments RF W1SL 91 Nov 89 Output Monitor Feedpoint impedance characteristics of W5JJ 50 Dec 73 practical antennas Filter, tunable for audio selectivity W2EEY 22 Mar 70 Fire protection in the ham shack Darr 54 Jan 71 Five-band Junkbox Transmitter W3RMD 42 Dec 89 Frequency spotter, crystal controlled W5JJ 36 Nov 70 Ham radio techniques W6SAI 59 Dec 86 Ham Radio Techniques: Antennas, GFI, W6SAI 57 Dec 89 Capacitors and Fundamentals ICs, basics of W3FQJ 40 Jun 71 ICs, basics of W3FQJ 58 Jul 71 ICs, digital flip-flops W3FQJ 60 Jul 72 ICs, digital multivibrators W3FQJ 42 Jun 72 ICs, digital, basics W3FQJ 41 Mar 72 ICs, digital, basics W3FQJ 58 Apr 72 ICs, digital, oscillators and dividers W3FQJ 62 Aug 72 Interference, hi-fi G3LLL 26 Jun 75 Interference, radio frequency WA3NFW 30 Mar 73 Introduction to Waveform Generators- pt 2 K4IPV 82 Dec 89 Man-made interference, how to find W1DTY 12 Dec 70 Meters, how to use W4PSJ 48 Sep 75 Morse code computer tutor N3SE 45 Jun 85 Morse code, speed standards for VE2ZK 58 Apr 73 Mosfet circuits W3FQJ 50 Feb 75 New band privileges for Novice operators KA0DOE 15 Sep 85 (letter) New band privileges for Novice operators Comments, KD0EV 9 Jan 86 (letter) New band privileges for Novice operators Comments, W3Y6F 9 Jan 86 (letter) New band privileges for Novice operators Comments, WD5H 9 Jun 86 (letter) Novice playground (letter) WA5MUF 8 Jan 82 Novice privileges (letter) WB9IVR 9 Oct 85 Novice roundup (letter) KA9AZY 8 Jun 81 Operation upgrade: part 1 W6BNB 12 Sep 81 Operation upgrade: part 2 W6BNB 28 Oct 81 Practically speaking K4IPV 79 Dec 85 Practically Speaking: Getting to Know the K4IPV 34 Dec 89 Logic Families- pt 1: TTL Practically Speaking: Test Equipment for K4IPV 76 Nov 89 Digital Electronics Preamplifier, 21 MHz WA5SNZ 20 Apr 72 Printed-circuit boards, how to make your own K4EEU 58 Apr 73 Printed-circuit boards, low cost W8YFB 16 Jan 75 Q factor, understanding W5JJ 16 Dec 74 Radio communications links, basics of W1EZT 44 Oct 69 Radiotelegraph codes: there's not just one KR6A 82 Sep 88 Receiver frequency calibrator W5UQS 28 Dec 71 Receiver, regenerative for WWV WA5SNZ 42 Apr 73 Receivers, direct-conversion W3FQJ 59 Nov 71 Rectifiers, improved half-wave Bailey 34 Oct 73 Reflections: Novice enhancement and the 220 W9JUV 4 Apr 87 MHz band S-meters, circuits for K6SDX 20 Mar 75 Safety in the ham shack Darr 44 Mar 69 Semiconductor diodes, evaluating W5JJ 52 Dec 71 Semiconductors, charge flow in WB6BIH 50 Apr 71 Speaker intelligibility, improving WA5RAQ 53 Aug 70 Swr bridge WB2ZSH 55 Oct 71 Towers and rotators K6KA 34 May 76 Transistor power dissipation, how to WN9CGW 56 Jun 71 determine Transmitter keying, improving K6KA 44 Jun 76 Transmitter power levels WA5SNZ 62 Apr 71 Transmitter, low-power, 80-meter W3FQJ 50 Aug 75 Transmitter, multiband low power with vfo K8EEG 39 Jul 72 Troubleshooting by voltage measurements James 64 Feb 76 Troubleshooting, basic James 54 Jan 76 Troubleshooting, resistance measurements James 58 Apr 76 Troubleshooting, thinking your way through Allen 58 Feb 71 Tuneup, off-the-air W4MB 40 Mar 76 Underground coaxial transmission line, how W0FCH 38 May 70 to install Vertical antennas, improving efficiency K6FD 54 Dec 74 Vfo for 40 and 80 meters W3QBO 36 Aug 70 Vfo, stable solid-state K4BGF 8 Dec 71 Wiring and grounding W1EZT 44 Jun 69 Workbench, electronics W1EZT 50 Oct 70 operating Title Author Page Issue ----- ------ ---- ----- 160-meter band (ham radio techniques) W6SAI 46 May 81 2 meters outlawed (letter) AA6C 8 Aug 82 Amateur band Intruders (letter) W5SAD 8 Oct 80 Amateur radio, 1933 (ham radio techniques) W6SAI 41 Jun 81 Amateur radio, 1941 (ham radio techniques) W6SAI 30 Aug 81 Battlefield, the (letter) W0WL 8 Jun 83 Beam antenna headings W6FFC 64 Apr 71 Best best regards regards (letter) W6BQD 8 Jan 82 Best best regards regards (letter) Comments, N4AGS 8 Apr 82 Best best regards regards (letter) Comments, KA6NFD 8 May 82 Best best regards regards (letter) Comments, KA2AGZ 8 Sep 82 Blind ham (letter) Gerrey, Bill 8 Sep 82 Burglar alarm RFI (letter) WB2YVY 8 Mar 82 Buying topo maps Comments: K3SKE 9 Dec 86 Card from Frenchy (letter) W2LPV 8 Apr 82 Carrier complaint (comment) WD0P 9 Jul 88 Carrier-operated CW reception limiter W6NRW 113 Sep 85 CATVI (letter) WB4NMA 10 Aug 83 Code practice (HN) W2OUX 74 May 73 Code practice - the rf way WA4NED 65 Aug 68 Code practice stations (letter) WB4LXJ 75 Dec 72 Computers and ham radio W5TOM 60 Mar 69 County awards (totter) KB7SB 8 Jul 81 CW anyone? W7JWJ 44 Mar 81 CW memory, simple - Weekender K4DHC 46 Nov 80 CW monitor W2EEY 46 Aug 69 CW monitor and code-practice oscillator K6RIL 46 Apr 68 CW monitor, simple WA9OHR 65 Jan 71 CW nets (letter) N4EVS 8 Jun 82 CW transceiver operation with transmit- W1DAX 56 Sep 70 receive offset CW zero-beat indicator for transceivers W6KVD 88 Mar 83 DARC awards information Comments: K1RH 6 Jul 87 DX and QRP (letter) W6QJI 8 Oct 82 DX Forecaster K0RYW 76 Nov 81 DX Forecaster K0RYW 78 Dec 81 DXCC check list, simple W2CNQ 55 Jun 73 DXer's diary W9KNI 18 Mar 81 DXer's diary W9KNI 26 Apr 81 DXer's diary W9KNI 22 Jun 81 DXer's diary Comments 6 Sep 81 E12W six-meter report (letter) EI2W 12 Jul 80 Elmer's notebook: "Q" signals W1SL 95 Jun 88 Elmer's notebook: 220 MHz Short circuit 95 Aug 87 Elmer's notebook: 220 MHz W1SL 91 Aug 87 Elmer's notebook: an introduction to AMTOR W1SL 101 Sep 87 Elmer's notebook: packet radio W1SL 100 Oct 87 EME, 70-CM, requirements and recommendations W1JR 12 Jun 82 EME, 70-CM, requirements and recommendations Short circuit 79 Oct 82 FCC actions (letter) N8ADA 6 Apr 80 FCC actions (letter) W1ZI 6 Apr 80 Field Day- prepardedness or party time? W9JUV and N1ACH 6 Sep 88 (Backscatter) Fluorescent light, portable (HN) K8BYO 62 Oct 73 Generation gap in Amateur Radio (comment) N3CCW 94 Aug 88 Great-circle charts (HN) K6KA 62 Oct 73 Great-circle maps N5KR 24 Feb 79 Ham bands under siege (Backscatter) N1ACH 4 Oct 88 Ham radio techniques W6SAI 53 Jan 82 Ham radio techniques W6SAI 28 Mar 82 Ham radio techniques W6SAI 26 Apr 82 Ham radio techniques W6SAI 76 Jun 82 Ham radio techniques W6SAI 42 Jul 82 Ham radio techniques W6SAI 42 Aug 82 Ham radio techniques W6SAI 40 Sep 82 Ham radio techniques W6SAI 20 Oct 82 Ham radio techniques W6SAI 46 Nov 82 Ham radio techniques W6SAI 58 Dec 82 Ham radio techniques W6SAI 66 Jan 83 Ham radio techniques W6SAI 65 Nov 83 Ham radio techniques W6SAI 81 Dec 83 Ham radio techniques W6SAI 58 Sep 84 Ham radio techniques W6SAI 67 Jan 86 Ham radio techniques W6SAI 65 Feb 86 Ham radio techniques W6SAI 63 Mar 86 Ham radio techniques W6SAI 42 Apr 86 Ham radio techniques W6SAI 39 May 86 Ham radio techniques W6SAI 30 Jun 86 Ham radio techniques W6SAI 66 Jul 86 Ham radio techniques W6SAI 43 Aug 86 Ham radio techniques W6SAI 42 Sep 86 Ham radio techniques W6SAI 38 Oct 86 Ham radio techniques W6SAI 73 Nov 86 Ham radio techniques W6SAI 59 Dec 86 Ham Radio Techniques: 50th Anniversary of W6SAI 43 Aug 86 Tube that Changed Everything Ham radio techniques: a new country for you? W6SAI 41 Nov 87 Ham radio techniques: BYCAA revisited W6SAI 53 Aug 87 Ham Radio Techniques: Grounded-grid Amplifier W6SAI 42 Sep 86 Ham Radio Techniques: Grounded-grid W6SAI 38 Oct 86 Amplifier- pt 2 Ham Radio Techniques: MacGyver of the 30s W6SAI 59 Dec 86 Ham Radio Techniques: More on the G5RV W6SAI 63 Mar 86 Antenna Ham Radio Techniques: Phasing SSB SYSTEM.. W6SAI 67 Jan 86 Born Again! Ham Radio Techniques: Quad falling apart? W6SAI 65 Feb 86 Ham Radio Techniques: Summer Miscellany W6SAI 66 Jul 86 (Antennas) Ham Radio Techniques: Super-cathode Driven W6SAI 73 Nov 86 Amplifier Ham Radio Techniques: Surface-wave OTH Radar W6SAI 42 Apr 86 More QRM Ham radio techniques: the crystal ball W6SAI 68 May 82 Ham Radio Techniques: The Greatest Contest W6SAI 39 May 86 Ever Staged Ham Radio Techniques: the joys of TVI or, W6SAI 70 Aug 88 were you on the air last night? Ham Radio Techniques: The radio boys in the W6SAI 26 Nov 88 Pacific, or, working DX for Uncle Sam Ham Radio Techniques: Wrangle Over Wrengell W6SAI 30 Jun 86 (Island) Hamvention slide show (letter) N8ADA 8 Jan 82 Homebrew linears: treat or trap? (HN) VK4LR 77 Nov 82 Horn radio techniques W6SAI 60 Feb 82 How to be DX W4NXD 58 Aug 68 HT mobile companion K6JM 74 Feb 90 IC-255A switching circuit (HN) WB6IQV 70 Jan 83 IC-255A switching circuit (HN) Comments, WA4MZZ 8 Jun 83 Identification timer (HN) K9UQN 60 Nov 74 Intruder watch (letter) ZL6IW/ZL1BAD 6 Aug 81 INUS system (comment) XE1MD 9 Jan 88 Is it stolen? W8AP 84 Dec 82 Legal usefulness of Amateur Radio (comment) WA7AQN 9 Aug 88 Lifeline SAR (letter) WB9PFZ 8 Apr 82 Listening in on 10 fm W8FX 62 Jan 82 Locator field list SM5AGM 74 Jul 87 Locator field list SM5AGM 89 Oct 87 Magazines, use your old Foster 52 Jan 70 Maritime mobiles need simple rigs and good WB6VPX 9 Apr 90 installations Market survey of amateurs a good idea W1FB 9 Aug 88 (comment) Monitor, tone alert W4KRT 24 Aug 80 More information needed (comment) W3QQM 9 Sep 88 Morse code, speed standards for VE2ZK 68 Apr 73 Morse code, speed standards for Added note 68 Jan 74 (letter) Mysterious spur on 160 N3BEK 73 May 83 No code (letter) W6SN 10 Aug 83 No-code licence (letters) WB4SKP, W9ZMR, 8 Jan 83 W2LX, etal On-air tune-up (letter) K3EQ 36 Mar 82 Operating etiquette (letter) W9MKV 12 Jul 84 Operation upgrade: part 10 W6BNB 60 Oct 82 Operation upgrade: part 11 W6BNB 58 Nov 82 Operation upgrade: part 4 W8BNB 32 Feb 82 Operation upgrade: part 5 W6BNB 56 Mar 82 Operation upgrade: part 6 W6BNB 56 Apr 82 Operation upgrade: part 7 W6BNB 54 Jun 82 Operation upgrade: part 8 W6BNB 56 Jul 82 Operation upgrade: part 9 W6BNB 58 Sep 82 Other guy (letter) KA2GXS 8 May 82 Pacemakers and RFI K4CN 98 Jun 83 Pacemakers and RFI Comments, K1RGO 76 Oct 83 Pacemakers and RFI Comments, K4CN 77 Oct 83 Pacemakers and RFI: safety first K3EAS, K3FOW 76 Oct 83 Potential danger (Backscatter) N1ACH 4 Nov 88 Propagation of radio waves W1GV/4 26 Aug 82 Protecting amateur radio (letter) K2JIY 8 Jul 81 Protective material, plastic (HN) W6BKX 58 Dec 70 QRP (letter) W5QJM 8 Nov 82 QSL return, statistics on WB6IUH 60 Dec 68 Re-discovering ham radio (comment) KC1JG 9 Aug 88 Repeater etiquette (letter) W1OLP 8 Oct 83 Replays, instant (HN) W6DNS 67 Feb 70 RST (letter) W0UCK 6 Feb 81 RST feedback (letter) V4OVO 6 Dec 80 RST feedback (letter) W0NN 6 Dec 80 Selfish attitudes (letter) K2OZ 6 Nov 80 Service not hobby (letter) W5VSR 8 Aug 85 Sideband location (HN) K6KA 62 Aug 73 Spurious signals (HN) K6KA 61 Nov 74 Ten-meter band (ham radio techniques) W6SAI 38 Apr 81 Ten-meter beacon WA1IOB 46 Apr 83 Ten-meter beacons (letter) KA1YE 13 Sep 83 Ten-meter beacons (letter) Comments, KA1YE 11 Jan 84 Ten-second call swaps (letter) WB1FJE 6 Aug 81 TOM remembered (letter) W1ESN 11 Jan 84 Transceiver tuning (letter) N6TO 8 Jun 82 True north for antenna orientation, how to K4DE 38 Oct 80 determine Tune-up method, low duty-cycle for K4KI 62 Aug 83 transmitters (HN) Tune-up method, low duty-cycle for Comments, W5XW 11 Dec 83 transmitters (HN) Tune-up method, low duty-cycle for Comments, K4KI 11 Jan 84 transmitters (HN) Tuning with ssb gear W0KD 40 Oct 70 VHF/UHF World: Loose ends W1JR 53 Sep 88 VHF/UHF world: operating a VHF/UHF microwave W1JR 38 Jul 87 station VHF/UHF world: operating a VHF/UHF microwave Short circuit 97 Oct 87 station Volunteer examiners: keep standards high W0WX 12 May 84 (letter) Wearing cans (letter) WB9FRV 8 Jul 81 Who pays the jammer (letter) W3MEO 8 Oct 82 Working W5LFL from space K6DUE 81 Sep 83 Zulu time (HN) K6KA 58 Mar 73 oscillators Title Author Page Issue ----- ------ ---- ----- 1-MHz oscillator, new approach WA2SPI 46 Mar 79 10-GHz oscillator, ultra stable K8UR 57 Jun 83 455-kHz bfo, transistorized W6BLZ, K5GXR 12 Jul 68 5-ampere power supply, adjustable N1JR 50 Dec 78 AFC circuit for VFOs K6EHV 19 Jun 79 AFSK oscillator, solid-state WA4FGY 28 Oct 68 Audio oscillator to pulse generator W0DLO 50 Oct 84 conversion (HN) Audio oscillator, NE566 IC W1EZT 36 Jan 75 Better frequency stability for the Drake TR7 HB9ABO 21 Aug 87 Blocking oscillators W6GXN 45 Apr 69 Clock oscillator, TTL (HN) W9ZTK 56 Dec 73 Colpitts oscillator design technique WB6BPI 78 Jul 78 Colpitts oscillator design technique Short circuit 94 Feb 79 Crystal oscillator, frequency adjustment of W9ZTK 42 Aug 72 Crystal oscillator, high stability W6TNS 36 Oct 74 Crystal oscillator, low-frequency (HN) W6XM 86 Mar 82 Crystal oscillator, miniature W6DOR 68 Dec 68 Crystal oscillator, simple (HN) W2OUX 98 Nov 77 Crystal oscillators W6GXN 33 Jul 69 Crystal oscillators, stable DJ2LR 34 Jun 75 Crystal oscillators, stable Correction 67 Sep 75 Crystal oscillators, survey of VK2ZTB 10 Mar 76 Crystal oven, simple (HN) Mathieson 66 Apr 76 Crystal ovens, precision temperature control K4VA 34 Feb 78 Crystal switching (HN) K6LZM 70 Mar 69 Crystal test oscillator and signal generator K4EEU 46 Mar 73 Crystals, overtone (HN) G8ABR 72 Aug 72 CW BFO crystal for the 7SS-3 (HN) N1FB 80 Feb 82 Direct synthesis VFO W7SX 10 Sep 88 Drift-correction circuit for free running PA0KSB 45 Dec 77 oscillators Elmer's Notebook: Oscillators W1SL 44 May 89 Frequency synthesis by VXO harmonic selection W3MT 12 Feb 84 Frequency synthesis up to 2 GHz WA6DYW 33 Apr 88 Goral oscillator notes (HN) K5QIN 66 Apr 76 Hex inverter vxo circuit W2LTJ 50 Apr 75 High-stability BFO for receiver applications K1ZJH 28 Jun 85 IC crystal controled oscillators (letter) W7EKC 91 Jan 78 IC crystal controlled oscillators VK2ZTB 10 Mar 76 Introduction to Waveform Generators- pt 1 K4IPV 62 Sep 89 Junkbox variable crystal oscillator W3RMD 72 Feb 90 (Weekender) Local oscillator, phase locked VE5FP 6 Mar 71 Local oscillators, high stability for WB3JZO 29 Nov 85 microwave receivers and other applications Low-noise phase-locked UHF VCO part 2: WA9HUV 25 Aug 86 construction and testing Low-noise phase-locked UHF VFO part 1: the WA9HUV 33 Jul 86 noise problem Low-noise phase-locked UHF VFO part 1: the Short circuit 9 Dec 86 noise problem Monitoring oscillator W2JIO 36 Dec 72 Multiple band master-frequency oscillator K6SDX 50 Nov 75 Multivibrator, crystal-controlled WN2MQY 65 Jul 71 Noise sideband performance in oscillators, DJ2LR 51 Oct 78 evaluating Oscillator, audio, IC W6GXN 50 Feb 73 Oscillator, electronic keyer WA6JNJ 44 Jun 70 Oscillator, Franklin (HN) W5JJ 61 Jan 72 Oscillator, frequency measuring W6IEL 16 Apr 72 Oscillator, frequency measuring Added notes 90 Dec 72 Oscillator, gated (HN) WB9KEY 59 Jul 75 Oscillator, phase-locked VE5FP 6 Mar 71 Oscillator, two-tone, for ssb testing W6GXN 11 Apr 72 Oscillator, voltage controlled, uses ceramic K2BLA 18 Jun 85 resonators Oscillator, voltage controlled, uses ceramic Short circuit 27 Aug 85 resonators Oscillator-monitor, audio WA1JSM 48 Sep 70 Oscillators (HN) W1DTY 68 Nov 69 Oscillators, cure for cranky (HN) W8YFB 55 Dec 70 Oscillators, repairing Allen 69 Mar 70 Oscillators, resistance-capacitance W6GXN 18 Jul 72 Oscillators, ssb Belt 26 Jun 68 Overtone crystal oscillators without WA5SNZ 50 Apr 78 inductors Overtone oscillator (HN) WSUQS 77 Oct 68 Phantom-coil VXO W3MT 66 Jan 82 Phantom-coil VXO Comments, W3MT 8 Jul 82 PL tone generator, a programmable WB0VSZ 51 Apr 84 PL tone generator, a programmable Short circuit 125 May 84 Practically speaking: drift and shift K4IPV 75 Jan 88 Practically Speaking: More Digitally K4IPV 78 Jul 89 Generated Sawtooth Plus Triangle Waves Precision crystal frequency checker N4TMI 44 Jun 90 (Weekender) Quadrature-phased local oscillator ([after) K6ZX 62 Sep 75 Quartz crystals (letter) WB2EGZ 74 Dec 72 Regulated power supplies, designing K5VKO 58 Sep 77 RF synthesizers for hf communications, part1 WA6OAA 12 Aug 83 RF synthesizers for hf communications, part1 Short circuit 125 May 84 RF synthesizers for hf communications, part2 WA6OAA 48 Sep 83 RF synthesizers for hf communications, part2 Short circuit 125 May 84 RF synthesizers for hf communications, part3 WA6OAA 17 Oct 83 RF synthesizers for hf communications, part3 Short circuit 125 May 84 Stable vfo (C&T) W1DTY 51 Jun 76 TTL crystal oscillators (HN) W0JVA 60 Aug 75 TTL oscillator (HN) WB6VZW 77 Feb 78 UHF local-oscillator chain N6TX 27 Jul 79 Universal oscillator circuit VE6RF 38 Apr 86 VCO, 1800-2600 MHz W0DTV 21 Jul 85 Vco, crystal-controlled WB6IOM 58 Oct 69 Versatile audio oscillator (HN) W7BBX 72 Jan 76 Vfo buffer amplifier (HN) W3QBO 66 Jul 71 Vfo design using characteristic curves I2BVZ 36 Jun 78 Vfo design, stable W1CER 10 Jun 76 Vfo for solid-state transmitters W3QBO 36 Aug 70 Vfo transistors (HN) W1OOP 74 Nov 69 Vfo, digital readout WB8IFM 14 Jan 73 Vfo, high stability W8YFB 14 Mar 69 Vfo, high-stability, vhf OH2CD 27 Jan 72 Vfo, multiband fet K8EEG 39 Jul 72 Vfo, stable K4BGF 8 Dec 71 Vfo, stable transistor W1DTY 14 Jun 68 Vfo, stable transistor Short circuit 34 Aug 68 VFOs tuned by cylinder and disc W0YBF 58 Feb 83 Voltage-tuned mosfet oscillator WA9HUV 26 Mar 79 Vxo design, practical K6BIJ 22 Aug 70 Wideband VCO design WA4MGX 49 Jul 84 packet Title Author Page Issue ----- ------ ---- ----- 220-MHz 9600-Baud Data Radio System for W2DUC 67 Feb 89 Packet 4800 baud modem for VHF/UHF packet radio VE3DNL,VE3DNM,VE3 10 Aug 88 DW & VE3LNY A New Addition for Your TNC K9MLD 72 Dec 89 Amateur packet radio networking and KR3T 33 Feb 88 protocols, part 1 Amateur packet radio networking and KR3T 56 Mar 88 protocols, part 2 Amateur packet radio networking and KR3T 41 Apr 88 protocols, part 3 Automatic Packet Beacon Tracker and Monitor W4GBB 66 Aug 89 (HN) C-64 and GLB PK-1 interface circuit Comments: packet 6 Jan 87 board update C-64 and GLB PK-1 interface circuit W2EHD 87 Mar 87 Elmer's notebook: packet radio W1SL 100 Oct 87 Elmer's Notebook: Packet Radio for the First WISL 96 Mar 89 Timer Exploring packet radio with KISS WA8BXN 9 Oct 88 Formatted display of packet using KISS WA8BXN 51 Dec 88 Packet radio conference bridge WD5HJP 24 Apr 87 Packet radio PSK modem for JAS-1/FO-12 G3RUH 8 Feb 87 Packetimer for the PK-1 W2EHD/exW8KGN 93 Mar 87 RAM drive for packet radio AD1B 44 Dec 87 Station Control Node Expand Your Versatility WA0RJT 23 Mar 89 with SCN TEXNET packet-switching network - pt. 1 WB5PUC & N5EG 29 Mar 87 system definition and design TEXNET packet-switching network - pt. 2 WB5PUC & N5EG 29 Apr 87 hardware design TEXNET packet-switching network - pt. 3 WB5PUC & N5EG 53 Jun 87 software overview Transmit Timer for the KPC-2, The Weekender K1ZJH 94 Feb 89 Using macros with packet (HN) AD1B 82 Oct 88 Video Monitor for Packet Demonstrations, A WALFHB 27 Jun 89 Big power supplies Title Author Page Issue ----- ------ ---- ----- AC converter, DC to 400-Hz (HN) WB2YVY 58 Mar 83 AC current monitor (letter) WB5MAP 61 Mar 75 AC power supply, regulated, for mobile fm WA8TMP 28 Jun 73 equipment Adjustable 5-ampere supply N1JR 50 Jan 79 All-mode-protected power supply K2PMA 74 Oct 77 An easy-to-build NiCd pulse charger AG6K 18 Sep 88 (weekender) Arc suppression networks (HN) WA5EKA 70 Jul 73 Batteries on concrete (comment) N5OP 101 Sep 88 Batteries, selecting for portable equipment WA0AIK 40 Aug 73 Battery charger, NiCd, constant current, a K2MWU 67 Aug 85 pulsed Battery charging (letter) Carlson 6 Nov 80 Battery drain, auxiliary, guard for (HN) W1DTY 74 Oct 74 Battery power W3FQJ 56 Aug 74 Battery storage (comment) W5JHJ 6 May 88 Battery-backed master power system K9ES 17 Jan 88 Bench power supply - Weekender WB6AFT 50 Feb 80 Build your own supercharger K3OF 22 Mar 90 Build your own supercharger Short circuit 78 May 90 Charger, fet-controlled, for nicad batteries WA0JYK 46 Aug 75 Constant-current battery charger for K5PA 34 Apr 78 portable operation Converter, 12 to 6 volt (C&T) W1DTY 42 Apr 76 Current limiting (HN) W0LPQ 70 Oct 72 Current limiting (letter) K5MKO 66 Oct 73 Dc power supply, regulated (C&T) W1DTY 51 Jun 76 Dc-dc converter, low-power W5MLY 54 Mar 75 Diesel generator repair Richardson, Wayne 46 Apr 83 Diode surge protection (HN) WA7LUJ 65 Mar 72 Diode surge protection (HN) Added note 77 Aug 72 Diodes for power supplies, choosing W6BLZ 38 Jul 68 Drake R-4C receiver improved power supply W3RJ 28 Feb 82 Dry-cell life W1DTY 41 Apr 76 Dual voltage power supply WD4SKH 32 Mar 83 Dual voltage power supply Comments, WB2UAQ 12 Jul 83 Dual voltage power supply Short circuit 80 Jul 83 Dual voltage surge-protection for high- K8VIR 42 Aug 81 voltage power supplies (weekender) Dual-voltage power supply (HN) W1OOP 71 Apr 69 Dual-voltage power supply (HN) Short circuit 80 Aug 69 Dual-voltage power supply (HN) W5JJ 68 Nov 71 Electrolytic capacitors (letter) WB8MKU 6 Jun 81 Filament transformers, miniature Bailey 66 Sep 74 Forget memory (Ni-Cd discussion) K0OV 62 Jan 83 Get the most from your NiCds (Weekender) K3OF 88 Dec 88 High-current regulated dc supply N8AKS 50 Aug 79 High-power trouble shooting Allen 52 Aug 68 IC power (HN) W3KBM 68 Apr 72 IC power supply, adjustable (HN) W3HB 95 Jan 78 IC regulated power supply W2FBW 50 Nov 70 IC regulated power supply W9SEK 51 Dec 70 IC regulated power supply for ICs Short circuit 80 May 68 IC-regulated power supply for ICs W6GXN 28 Mar 68 Instantaneous-shutdown high-current W6GB 81 Jun 78 regulated supply Klystrons, reflex power for (HN) W6BPK 71 Jul 73 Line transient protection (HN) W1DTY 75 Jul 68 Line-voltage monitor (HN) WA8VFK 66 Jan 74 Line-voltage monitor (HN) Current monitor 61 Mar 75 mod (letter) Load protection, scr (HN) W5OZF 62 Oct 72 Low voltage, variable bench power supply W6NBI 58 Mar 76 (weekender) Low-value voltage source (HN) WA5EKA 66 Nov 71 Low-voltage dc power supplies - Repair Bench K4IPV 38 Oct 79 Low-voltage power supplies, designing W4MLE 46 Mar 85 Low-voltage power supplies, designing Short circuit 121 May 85 Low-voltage supply (HN) WB2EGZ 57 Jun 68 Low-voltage supply with short-circuit WB2EGZ 22 Apr 68 protection Mobile power supplies, troubleshooting Allen 56 Jun 70 Mobile power supply (HN) WN8DJV 79 Apr 70 Mobile supply, low-cost (HN) W4GEG 69 Jul 70 Motorola Dispatcher, converting to 12 volts WB6HXU 26 Jul 72 Ni-cad charger, any-state WA6TBC 66 Dec 79 Nicad battery care (HN) W1DHZ 71 Feb 76 Nickel-cadmium batteries, time-current W1OLP 32 Feb 79 charging Operational power supply WA2IKL 8 Apr 70 Overvoitage protection (HN) W1AAZ 64 Apr 76 Pilot-lamp life (HN) W2OLU 71 Jul 73 Polarity inverter, medium current Laughlin 26 Nov 73 Power supplies for single sideband Belt 38 Feb 69 Power supply for the big amplifier W6YUY 64 Jun 82 Power supply protection for your solid-state W5JJ 36 Jan 70 circuits Power supply troubleshooting (repair bench) K4IPV 78 Sep 77 Power supply, amplifier WA2GFP 32 Sep 83 Power supply, improved (HN) W4ATE 72 Feb 72 Power supply, precision W7SK 26 Jul 71 Power supply, six-output Martin, Vaughn D. 12 Oct 84 Power supply, switching high-voltage W5FG 48 Apr 84 Power-supply hum (HN) W8YFB 64 May 71 Practically speaking: battery problems, pt1 K4IPV 62 Jul 87 Practically speaking: battery problems, pt2 K4IPV 73 Aug 87 Practically speaking: bench power supply K4IPV 55 Mar 86 Precision high-voltage dc regulator AG6K 75 Aug 88 Precision voltage supply for phase-locked WA6TLA 60 Jul 74 terminal unit (HN) Protection for solid-state power supplies W3NK 66 Sep 70 (HN) Protection for your solid-state devices W1OOP 52 Mar 81 Pulse width modulated dc-to-dc converters W3CZ 65 Oct 87 Rectifier, half-wave, improved Bailey 34 Oct 73 Regulated 5-volt supply (HN) W6UNF 67 Jan 73 Regulated power supplies, designing (letter) W9HFR 110 Mar 78 Regulated power supplies, how to design K5VKQ 58 Sep 77 Regulated power supply, 500-watt WA6PEC 30 Dec 77 Regulated power supply, 500-watt Short circuit 94 Feb 79 Regulated screen grid power supply AG6K 51 Jun 86 Regulated solid-state high-voltage power W6GXN 40 Jan 75 supply Regulated solid-state high-voltage power Short circuit 69 Apr 75 supply Regulator problem solved (HN) W6XM 97 Dec 83 Safe power for your low-noise GaAa FET WA9HUV 18 Nov 82 amplifier SCR-regulated power supplies W4GOC 52 Jul 70 Selenium rectifiers, replacing W1DTY 41 Apr 76 Servicing power supplies W6GXN 44 Nov 76 Solar energy W3FQJ 54 Jul 74 Solar power W3FQJ 52 Nov 74 Solar power source, 36-volt W3FQJ 54 Jan 77 Squirrel-cage motors make field-day power K6DZY 74 Aug 81 supplies (HN) Step-start circuit, high-voltage (HN) W6VFR 63 Sep 71 Storage-battery QRP power W3FQJ 64 Oct 74 Storing lead-acid batteries (comment) N5OP 9 Sep 88 Super regulator, the MPC1000 W3HUC 52 Sep 76 Superdischarger (Weekender) K3OF 73 Apr 90 Survey of solid-state power supplies W6GXN 25 Feb 70 Survey of solid-state power supplies Short circuit 76 Sep 70 Temperature control, automatic WB5IRI 75 Jun 85 The Guerri report: RF power supplies achieve W6MGI 157 Sep 85 high efficiency Thermoelectric power supplies K1AJE 48 Sep 68 Trans-global power supply (HN) W9CGI 76 Nov 82 Transformer shorts W6BLZ 36 Jul 68 Transformers, high-voltage, repairing W6NIF 66 Mar 69 Transformers, miniature (HN) W4ATE 67 Jul 72 Transformers, wind your own inexpensively W4GDW 96 Jun 85 Transient eliminator (C&T) W1DTY 52 Jun 76 Transients, reducing W5JJ 50 Jan 73 Two-way power for the IC2AT 2-meter handheld WB3JJF 57 Feb 82 Two-way power for the IC2AT 2-meter handheld Comments WB4MNW, 8 Jul 82 WB3JJF Understanding and Using 723 Voltage K3OF 42 Mar 89 Regulators Vacuum tube substitution W2YE 58 Oct 88 Variable high-voltage supply W1OLP 62 Dec 79 Variable power supply for transistor work WA4MTH 68 Mar 76 Variable Voltage Regulator, The Weekender K3HW 20 Jul 89 Variable-voltage power supply, 1.2 amps WB6AFT 36 Jul 78 VHF transceivers, regulated power supply for WA8RXU 58 Sep 80 Vibrator replacement, solid-state (HN) K8RAY 70 Aug 72 Voltage regulators, boosting bargain (HN) WA7VVC 90 May 77 Voltage regulators, IC W7FLC 22 Oct 70 Voltage regulators, IC W6GXN 31 Mar 77 Voltage safety valve W2UVF 78 Oct 76 Voltage-regulator ICs, adjustable WB9KEY 36 Aug 75 Voltage-regulator ICs, three-terminal WB5EMI 26 Dec 73 Voltage-regulator ICs, three-terminal Added note 73 Sep 74 (letter) Wind generators W3FQJ 50 Jan 75 Zener diodes (HN) K3DPJ 79 Aug 68 propagation Title Author Page Issue ----- ------ ---- ----- 360-degree MINIMUF propagation prediction N4UH 25 Feb 87 6-meter sporadic-E openings, predicting WA9RAQ 38 Oct 72 6-meter sporadic-E openings, predicting Added note 69 Jan 74 (letter) Achieve polarization, diversity through W3NGJ 10 Feb 86 variable power splitting Artificial radio aurora, scattering WB6KAP 18 Nov 74 characteristics of Calculator-aided propagation predictions N4UH 26 Apr 79 Calculator-aided propagation predictions Comments 6 Sep 79 Digital ionosondes K2RR 14 Dec 83 Diversity reception of HF digital WM6P 67 Jun 90 communication DX forecaster K0RYW 76 Jan 81 DX forecaster K0RYW 92 Feb 81 DX forecaster K0RYW 78 Mar 81 DX forecaster K0RYW 52 Apr 81 DX forecaster K0RYW 76 May 81 DX forecaster K0RYW 52 Jun 81 DX forecaster K0RYW 56 Jul 81 DX forecaster K0RYW 46 Aug 81 DX forecaster K0RYW 48 Sep 81 DX forecaster K0RYW 46 Oct 81 DX forecaster K0RYW 76 Nov 81 DX forecaster K0RYW 78 Dec 81 DX forecaster K0RYW 74 Jan 82 DX forecaster K0RYW 74 Feb 82 DX forecaster K0RYW 82 Mar 82 DX forecaster K0RYW 70 Apr 82 DX forecaster K0RYW 50 May 82 DX forecaster K0RYW 42 Jun 82 DX forecaster K0RYW 78 Jul 82 DX forecaster K0RYW 80 Aug 82 DX forecaster K0RYW 82 Sep 82 DX forecaster K0RYW 82 Oct 82 DX forecaster K0RYW 84 Nov 82 DX forecaster K0RYW 80 Dec 82 DX forecaster K0RYW 74 Jan 83 DX forecaster K0RYW 56 Feb 83 DX forecaster K0RYW 84 Mar 83 DX forecaster K0RYW 94 Apr 83 DX forecaster K0RYW 74 May 83 DX forecaster K0RYW 65 Jun 83 DX forecaster K0RYW 82 Jul 83 DX forecaster K0RYW 66 Aug 83 DX forecaster K0RYW 84 Sep 83 DX forecaster K0RYW 87 Oct 83 DX forecaster K0RYW 90 Nov 83 DX forecaster K0RYW 92 Dec 83 DX forecaster K0RYW 83 Jan 84 DX forecaster K0RYW 79 Feb 84 DX forecaster K0RYW 93 Mar 84 DX forecaster K0RYW 93 Apr 84 DX forecaster K0RYW 119 May 84 DX forecaster K0RYW 109 Jun 84 DX forecaster K0RYW 103 Jul 84 DX forecaster K0RYW 63 Aug 84 DX forecaster K0RYW 79 Sep 84 DX forecaster K0RYW 100 Oct 84 DX forecaster K0RYW 92 Nov 84 DX forecaster K0RYW 63 Dec 84 DX forecaster K0RYW 84 Dec 86 DX forecaster Comments:low 6 Apr 87 band DXing, W0SII DX Forecaster: 1985 Review K0RYW 99 Apr 86 DX forecaster: 1986 propagation review K0RYW 105 May 87 DX forecaster: 1987 propagation summary K0RYW 92 May 88 DX Forecaster: 1988 Propagation Summary K0RYW 109 May 89 DX Forecaster: 1989 DX propagation conditions K0RYW 82 May 90 DX Forecaster: A Geomagnetic Ionosphere K0RYW 91 Jul 86 Disturbance DX forecaster: a spring DX solution K0RYW 97 Apr 87 DX Forecaster: Antenna-to-lonosphere Path K0RYW 92 Oct 86 Match DX Forecaster: Better DXing in 1989 K0RYW 96 Jan 89 DX forecaster: DX propagation K0RYW 108 Jan 87 DX forecaster: DX propagation Comment: HORANT 6 Feb 87 for CP/M DX Forecaster: DX propagation software K0RYW 88 Apr 90 DX forecaster: DX signal quality K0RYW 80 Apr 88 DX Forecaster: DXing During the Summer QRN K0RYW 96 Aug 89 Season DX Forecaster: DXing From Winter Anomalies K0RYW 78 Dec 89 DX forecaster: dxing via the winter anomaly K0RYW 91 Oct 87 DX Forecaster: Equinoctial DX Propagation K0RYW 122 Sep 85 Brings Change DX Forecaster: Equinox DX Conditions K0RYW 102 Mar 89 DX forecaster: equinox problems K0RYW 106 Mar 87 DX forecaster: equinox season DX K0RYW 85 Oct 87 DX Forecaster: Equinox Season DX K0RYW 98 Sep 86 DX Forecaster: Equinox Season DXing K0RYW 96 Sep 89 DX forecaster: high sunspot propagation K0RYW 104 Sep 88 problems-part 1 DX forecaster: high sunspot propagation K0RYW 96 Oct 88 problems-part 2 DX forecaster: Ionosphere Matching K0RYW 92 Jan 85 DX Forecaster: Know Sporadic-E Skip K0RYW 96 Jul 89 DX forecaster: more DX propagation tips K0RYW 88 Feb 87 DX Forecaster: More New Cycle 22 DX K0RYW 91 Feb 89 DX Forecaster: More on Equinox Propagation K0RYW 96 Oct 89 DX Forecaster: More on Ionosphere Matching K0RYW 75 Feb 85 DX forecaster: more sporadic-E K0RYW 85 Sep 87 DX Forecaster: MUF Forecasting K0RYW 98 Dec 85 DX Forecaster: MUF Patterns and Trends K0RYW 112 Jan 86 DX Forecaster: receiving DX beacons K0RYW 96 Feb 90 DX Forecaster: Signal Levels During Summer K0RYW 100 Aug 85 Months DX forecaster: Solar cycle update K0RYW 96 Jan 88 DX Forecaster: Sporadic E Propagation K0RYW 102 Jun 85 DX forecaster: Sporadic E season - 1988 K0RYW 88 Jun 88 DX Forecaster: Sporadic-E Basics for 1989 K0RYW 88 Jun 89 DX Forecaster: Sporadic-E DX K0RYW 101 Jun 86 DX Forecaster: Sporadic-E Propagation K0RYW 118 May 86 DX forecaster: sporadic-E season K0RYW 66 Jun 87 DX Forecaster: spring frequency changes K0RYW 85 Mar 90 DX Forecaster: Spring Thunderstorm K0RYW 110 Apr 89 DX Forecaster: Springtime QRN K0RYW 97 Mar 86 DX Forecaster: Summer Propagation K0RYW 90 Aug 86 DX Forecaster: summer short skip signals K0RYW 73 Jun 90 DX forecaster: summer signal levels K0RYW 88 Aug 88 DX forecaster: summer thunderstorm noise K0RYW 78 Jul 87 DX forecaster: Summer thunderstorm noise K0RYW 83 Jul 88 DX forecaster: summertime DX K0RYW 82 Aug 87 DX Forecaster: Summertime DX K0RYW 100 Jul 85 DX Forecaster: Sunspot Cycle Update K0RYW 105 Oct 85 DX Forecaster: Sunspot cycle views K0RYW 84 Apr 85 DX Forecaster: Sunspot Minimum K0RYW 84 Nov 86 DX Forecaster: Sunspots and MUFs K0RYW 78 Feb 86 DX Forecaster: the DX beacon game K0RYW 82 Jan 90 DX forecaster: the ultimate antipode DX K0RYW K0RYW 78 Mar 88 DX forecaster: transequatorial DX update K0RYW 90 Feb 88 DX Forecaster: Vernal Equinox DX K0RYW 120 Mar 85 DX Forecaster: What's this Sporadic E? K0RYW 79 May 85 DX forecaster: Winter anomalous absorption K0RYW 101 Dec 86 DX forecaster: winter DX K0RYW 57 Nov 87 DX forecaster: Winter DX anomalies K0RYW 110 Dec 88 DX forecaster: Winter DX season K0RYW 108 Nov 88 DX Forecaster: Winter DX Season K0RYW 92 Nov 85 DX Forecaster: Winter DX Season K0RYW 96 Nov 89 Dxing by computer NS6N and 81 Aug 84 Buchanan, Waiter Echoes, long delay WB6KAP 61 May 69 Elmer's notebook: propagation basics W1SL 81 Aug 88 EME link calculator program KE6ZE 9 Feb 86 EME link calculator program Comments, KC8OH 70 Apr 86 Grayline propagation, fundamentals of KR7L 77 Aug 84 Ham Radio techniques: Dx is getting better W6SAI 28 Apr 88 and better! Here's why! Ham Radio Techniques: Have You Met SID? W6SAI 31 Jul 89 Ham Radio techniques: New Zealand, Maui, and W6SAI 22 Dec 88 the solar cycle Ham Radio techniques: On our way up! W6SAI 26 Sep 88 HF ground wave propagation WA9GFR 81 May 86 How to plot great circles on your favorite W4BW 81 Aug 86 map Ionospheric E-layer WB6KAP 58 Aug 69 Ionospheric science, short history of WB6KAP 58 Aug 69 L-band ground wave propagation program WA9GFR and 103 Jan 86 Joseph R. Hennel L-band ground wave propagation program Comment, WA9GFR 9 Apr 86 Long-distance high frequency communications WB6KAP 80 Jul 68 Maximum usable frequency, predicting WB6KAP 70 Sep 68 Moon coordinates, determining basic W2WD 38 Jan 85 Moon-tracking by computer K6WX 38 Mar 84 New band propagation KK2XJM (W4MB) 12 Jan 83 Pathfinder- part two K3FR 47 Oct 88 Quiet sun, the WB6KAP 76 Dec 68 Radio astronomy and the search for extra WB3JZO 10 Mar 85 terrestrial intelligence Radio signals, radiation of W1GV/4 26 Jun 82 Return to the 360-degree propagation N4UH 41 Oct 87 prediction Russian Woodpecker, the: a continuing KR7L 37 Nov 84 nuisance Scatter-mode propagation, frequency K2OVS 26 Sep 71 synchronization for Skywave communications WB3JZO 9 Mar 90 Skywave communications, part 2 WB3JZO 60 Apr 90 Skywave communications, part 3 WB3JZO 34 May 90 Solar activity and the earth's magnetosphere KR7L 8 Aug 87 Solar cycle 20, vhfer's view of WA5IYX 46 Dec 74 Solar outages, predicting VE7ABK 75 Mar 85 Sporadic E and 50-MHz transatlantic G3NAQ 10 Jul 88 propagation during 1987 Sunspot numbers WB6KAP 63 Jul 69 Sunspot numbers, smoothed WB6KAP 72 Nov 68 Sunspots and solar activity WB6KAP 60 Jan 69 Tropospheric-duct vhf communications WB6KAP 68 Oct 69 VHF meteor scatter communications AI7J 69 Feb 84 VHF/UHF world W1JR 45 Sep 84 VHF/UHF world W1JR 85 Dec 85 VHF/UHF world: improving meteor scatter W1JR 82 Jun 84 communications VHF/UHF world: meteor scatter communications W1JR 68 Jun 86 VHF/UHF world: meteor scatter communications Short circuit 87 Jul 86 VHF/UHF world: propagation update W1JR 86 Jul 85 VHF/UHF world: propagation update- part 2 W1JR 39 Jun 88 VHF/UHF world: propagation update- part 3 W1JR 38 Jul 88 VHF/UHF world: the VHF/UHF primer, an W1JR 14 Jul 84 introduction to propagation VHF/UHF world: uW and mm-wave propagation, W1JR 69 Aug 86 part2 receivers and converters - general Title Author Page Issue ----- ------ ---- ----- Active mixers, performance capability: part 1 DJ2LR 30 Mar 82 Active mixers, performance capability: part 2 DJ2LR 38 Apr 82 Antenna impedance transformer for receivers W6NIF 70 Jan 70 (HN) Antenna tuner, miniature receiver (HN) WA7KRE 72 Mar 69 Anti-QRM methods W3FQJ 50 May 71 Attenuation pads, receiving (letter) K0HNQ 69 Jan 74 Audio agc amplifier WA5SNZ 32 Dec 73 Audio agc principles and practice WA5SNZ 28 Jun 71 Audio amplifier and squelch circuit W6AJF 36 Aug 68 Audio filter for CW, tunable WA1JSM 34 Aug 70 Audio filter mod (HN) K6HIU 60 Jan 72 Audio filter, simple W4NVK 44 Oct 70 Audio filter, tunable peak-notch W2EEY 22 Mar 70 Audio filter, variable bandpass W3AEX 36 Apr 70 Audio filter-frequency translator for CW W2EEY 24 Jun 70 reception Audio filters for ssb and CW reception K6SDX 18 Nov 76 Audio filters, CW (letter) 6Y5SR 56 Jun 75 Audio module, complete K4DHC 18 Jun 73 Audio processor, communications, for W6NRW 71 Jan 80 reception Audio, improved for receivers K7GCO 74 Apr 77 Audio-filters, inexpensive W8YFB 24 Aug 72 Auto-product detection of double-sideband K4UD 58 Mar 80 Auto-product detection of double-sideband Letter G3JIP 6 Oct 80 Automatic repeater/receiver sensitivity (HN) VE7ABK 81 Jan 82 Bandspreading techniques (letter) Anderson, 6 Jan 79 Leonard H. Bandspreading techniques for resonant Anderson, 46 Feb 77 circuits Leonard H. Bandspreading techniques for resonant Short circuit 69 Dec 77 circuits Bandspreading techniques for resonant W0EJO 6 Aug 78 circuits (letter) Batteries, how to select for portable WA0AIK 40 Aug 73 equipment Bfo multiplexer for a multimode detector WA3YGJ 52 Oct 75 Bragg-cell receiver WB3JZO 42 Feb 83 Broadband jfet amplifiers N6DX 12 Nov 79 Calibrator crystals (HN) K6KA 66 Nov 71 Calibrator, plug-in frequency K6KA 22 Mar 69 Calibrator, simple frequency-divider using W6GXN 30 Aug 69 mos ICs Cascaded stages, IMD and intercept points of W3IMG 28 Nov 84 CB to 10-meter conversions, scanner W2FMY, KB2GA 98 Nov 85 Communications receiver K2BLA 12 Jul 82 Communications receivers, calculating the WA7TDB 50 Aug 80 cascade intercept point of Communications receivers, design ideas for Moors 12 Jun 74 Communications receivers, designing for Moors 6 Feb 73 strong-signal performance Compact 75-meter monoband transceiver K1BQT 13 Nov 85 Compact 75-meter monoband transceiver Short circuit 66 Jan 86 Converting a vacuum-tube receiver to solid- W1OOP 26 Feb 69 state Counter dials, electronic K6KA 44 Sep 70 Crystal ladder filters, systematic design of N7WD 40 Feb 82 Crystal-filter design, practical PY2PEC 34 Nov 76 CW filter, adding (HN) W2OUX 66 Sep 73 CW filter, high performance W3NON 18 Apr 81 CW filter, high performance Comments W3NQN 6 Nov 81 CW monitor, simple WA9OHR 65 Jan 71 CW processor for communications receivers W6NRW 17 Oct 71 CW reception, enhancing through a simulated- WA1MKP 61 Oct 74 stereo technique CW reception, noise reduction for W2ELV 52 Sep 73 CW regenerator for interference-free Leward, 54 Apr 74 communications Libenschek CW selectivity with crystal bandpassing W2EEY 52 Jun 69 CW transceiver operation with transmit- W1DAX 56 Sep 70 receive offset Detector, logarithmic with post-injection W1ERW 36 Mar 80 marker generator Detector, reciprocating W1SNN 32 Mar 72 Detector, reciprocating Added notes 54 Mar 74 Detector, reciprocating Added notes 76 May 75 Detector, single-signal phasing type WB9CYY 71 Oct 76 Detector, single-signal phasing type Short circuit 68 Dec 77 Detector, superregenerative, optimizing Ring 32 Jul 72 Detectors, fm, survey of W6GXN 22 Jun 76 Detectors, ssb Belt 22 Nov 68 Digital display N3FG 40 Mar 79 Digital display Comments 6 Jul 79 Digital frequency display WB2NYK 26 Sep 76 Digital frequency readout using the W3NNL 83 Nov 85 Commodore 64 Digital readout, universal WB8IFM 34 Dec 78 Digital vfo basics Earnshaw 18 Nov 78 Diode detectors W6GXN 28 Jan 76 Diode detectors Comments 77 Feb 77 Direct-conversion receivers (HN) YU2HL 100 Sep 78 Diversity receiving system W2EEY 12 Dec 71 Diversity reception K4KJ 48 Nov 79 Double-balanced mixer, active, high-dynamic DJ2LR 90 Nov 77 range Dynamic range, measuring WB6CTW 56 Nov 79 Elmer's notebook: receiver buzzwords W1SL 100 Nov 87 Extending receive coverage for the IC-02 and WB6GTM 77 Jul 86 IC-04 External product detector improves receiver W6GB 107 Nov 85 performance Famous Equipment of Yesteryear K4KJ 43 Nov 89 Filter alignment W7UC 61 Aug 75 Filter, vari-Q W1SNN 62 Sep 73 Frequency calibration using 60 kHz WWVB W4ZPS 45 Mar 88 Frequency calibrator, how to design W3AEX 54 Jul 71 Frequency calibrator, receiver W5UQS 28 Dec 71 Frequency measurement of received signals W4AAD 38 Oct 73 Frequency spotter, general coverage W5JJ 36 Nov 70 Frequency standard (HN) WA7JIK 69 Sep 72 Frequency standard, universal K4EEU 40 Feb 74 Frequency standard, universal Short circuit 72 May 74 Frequency-marker standard using cmos W4IYB 44 Aug 77 Ham radio techniques: "white noise" revisited W6SAI 79 Oct 87 Ham radio techniques: "white noise" W6SAI 55 Jan 87 technology bites back Hang agc circuit for ssb and CW W1ERJ 50 Sep 72 Headphone cords (HN) W2OLU 62 Nov 75 High dynamic range mixing with the Si8901 KB6QJ 11 Mar 88 High-stability BFO for receiver applications K1ZJH 28 Jun 85 I-f amplifier design DJ2LR 10 Mar 77 I-f amplifier design Short circuit 94 May 77 I-f detector receiver module K6SDX 34 Aug 76 I-f system, multimode WA2IKL 39 Sep 71 I-f transformers, problems and cures - K4IPV 56 Mar 79 Weekender I.f cathode jack W6HPH 28 Sep 68 Image suppression (HN) W6NIF 68 Dec 72 Intelligibility of communications receivers, WA5RAQ 53 Aug 70 improving Interference, electric fence K6KA 68 Jul 72 Interference, hi-fi (HN) K6KA 63 Mar 75 Interference, rf W1DTY 12 Dec 70 Interference, rf WA3NFW 30 Mar 73 Interference, rf, its cause and cure G3LLL 26 Jun 75 Intermodulation distortion, reducing in high- WB4ZNV 26 Mar 77 frequency receivers Intermodulation distortion, reducing in high- Short circuit 69 Dec 77 frequency receivers LF converter, fixed-tuned K1RGO 19 Jan 83 Linear Tuning with a War Surplus Capacitor N2DCH 40 Jun 89 Local oscillator, phase-locked VE5FP 6 Mar 71 Local-oscillator waveform effects on Robinson, Smith 44 Jun 74 spurious mixer responses Low-noise Design Primer WB4EHS 80 Nov 89 Low-noise preamplifiers with good impedance W1OOP 36 Nov 82 match Measuring receiver dynamic range: an WB6CTW 86 Apr 81 addendum (HN) Mixer frequencies, graphical selection W2HVN 41 Jun 88 Mixer, crystal W2LTJ 38 Nov 75 Monitor receiver modification (HN) W2CNQ 72 Feb 76 Multiple receivers on one antenna (Two for W2OZY 72 Jun 80 one) (HN) Noise blanker K4DHC 38 Feb 73 Noise Blanker W5QJR 54 Feb 79 Noise blanker design K7CVT 26 Nov 77 Noise blanker, hot-carrier diode W4KAE 16 Oct 69 Noise blanker, hot-carrier diode Short circuit 76 Sep 70 Noise blanker, IC W2EEY 52 May 69 Noise blanker, IC Short circuit 79 Jun 70 Noise discriminator, a pulsewidth W6NRW 23 Nov 84 Noise effects in receiving systems DJ2LR 34 Nov 77 Noise figure relationships (HN) W6WX 70 Apr 80 Noise figure, the real meaning of K6MIO 26 Mar 69 Noise, understanding and handling DJ2LR 10 Nov 86 Optimizing the QF-1A Audio Filter VE7BS 38 Dec 89 Panoramic adaptor spectrum analyzer design WA6NCX/1 26 Feb 83 notes Panoramic adaptor spectrum analyzer design Comments, K2CBY 12 Sep 83 notes Panoramic adaptor spectrum analyzer design Short circuit 70 Oct 83 notes Panoramic reception, simple W2EEY 14 Oct 68 Phase-locked 9-MHZ bfo W7GHM 49 Nov 78 Phase-shift networks, design criteria G3NRW 34 Jun 70 Phaselocked up-converter W7GHM 26 Nov 79 Power-line noise K4TWJ 60 Feb 79 Preamp at work, Quiet! N6TX 14 Nov 84 Preamplifier, wideband W1AAZ 60 Oct 76 Product detector, hot-carrier diode VE3GFN 12 Oct 69 Radio-direction finder W6JTT 38 Mar 70 Radio-frequency interference WA3NFW 30 Mar 73 Radiotelegraph translator and transcriber W7CUU, K7KFA 8 Nov 71 Radiotelegraph translator and transcriber Eliminating the 60 May 72 matrix KH6AP Receiver dynamic range W3JZO 77 Dec 82 Receiver dynamic range (letter) AA6PZ 7 Aug 80 Receiver impedance matching (HN) W0ZFN 79 Aug 68 Receiver input temperature (letter) WA6JTD 13 Apr 85 Receiver spurious response Anderson 82 Nov 77 Receiver tuning mechanism selection PY2PE1C 31 Nov 86 Receiver, 10 through 80-meter homebrew N1BFV 40 Nov 85 Receivers - some problems and cures WB0JGP, K8RAH 10 Dec 77 Receivers - some problems and cures Ham notebook 94 Oct 78 Receivers - some problems and cures Short circuit 94 Feb 79 Receiving RTTY, automatic frequency control W5NPO 50 Sep 71 for Reciprocating detector as fm discriminator W1SNN 18 Mar 73 Reciprocating-detector converter W1SNN 58 Sep 74 Remote-site receivers and repeater operation K9EID 36 Jan 83 Resurrecting old receivers K4IPV 52 Dec 76 Rf amplifier, wideband WB4KSS 58 Apr 75 Rf amplifiers for communications receivers Moors 42 Sep 74 Rf amplifiers, isolating parallel currents in G3IPV 40 Feb 77 Rf-agc amplifier, high-performance WA1FRJ 64 Sep 78 Rotary dial and encoder for digital tuning N3CA 30 Dec 82 S-meter readings (HN) W1DTY 56 Jun 68 S-meter, a calibrated W7SX 23 Jan 86 S-meter, a calibrated Short circuit 45 Apr 86 S-meters, solid-state K6SDX 20 Mar 75 Selectivity and gain control, improved VE3GFN 71 Nov 77 Selectivity, receiver (letter) K4ZZV 68 Jan 74 Sensitivity, noise figure and dynamic range W1DTY 8 Oct 75 Signal-strength, measuring W2YE 20 Aug 80 Signals, how many does a receiver see? DJ2LR 58 Jun 77 Signals, how many does a receiver see? Comments 101 Sep 77 Spectrum analyzer, a handheld optical WA4WDL 23 Apr 84 Spectrum analyzer, four channel W9IA 6 Oct 72 Squelch, audio-actuated K4MOG 52 Apr 72 Ssb signals, monitoring W6VFR 36 Mar 72 Superhet tracking calculations WA5SNZ 30 Oct 78 Superregenerative detector, optimizing Ring 32 Jul 72 Superregenerative receiver, improved JA1BHG 48 Dec 70 Talking clock (letter) N9KV 75 Feb 80 Talking digital readout (letter) N5AF 6 May 80 Ten-Tec Argosy, Upgrade WB3JZO 38 Nov 86 Threshold-gate/limiter for CW reception W2ELV 46 Jan 72 Threshold-gate/limiter for CW reception Added notes 59 May 72 (letter) W2ELV Troubleshooting the dead receiver K4IPV 56 Jun 76 True frequency digital readout for the HW-101 NU4F 8 Jan 87 True frequency digital readout for the HW-101 Short circuit 41 Aug 88 TS-930S headset audio, increased undistorted W6FR 128 Oct 85 (HN) Two-Loop 10-Hz Step 40-70 MHz Synthesizer PY1LL & C Mathias 24 Jan 89 Vacuum-tube receivers, updating W6HPH 62 Dec 78 Vacuum-tube receivers, updating Short circuit 73 Dec 79 VHF/UHF world: broadband amplifiers in W1JR 91 Nov 86 receiver design VHF/UHF world: high dynamic range receivers W1JR 97 Nov 84 VHF/UHF world: high dynamic range receivers Short circuit 103 Jan 85 VHF/UHF world: low noise receiver update - W1JR 77 Nov 87 part1 Vlf converter (HN) W3CPU 69 Jul 76 Weak signal reception in CW receivers ZS6BT 44 Nov 71 Wideband amplifier summary DJ2LR 34 Nov 79 WWV receiver, five-frequency W6GXN 36 Jul 76 receivers and converters - high-frequency receivers Title Author Page Issue ----- ------ ---- ----- 1.9MHz receiver W3TNO 6 Dec 69 15-meter sideband transceiver WA4ZXF 12 Mar 83 15-meter sideband transceiver Short circuit 80 Jul 83 160-meter receiver, simple W6FPO 44 Nov 70 20-meter receiver with digital readout, part K6SDX 48 Oct 77 1 20-meter receiver with digital readout, part K6SDX 56 Nov 77 2 28-MHz superregen receiver K2ZSQ 70 Nov 68 432-MHz converter N9KD 74 Apr 79 455-kHz bfo, transistorized W6BLZ, K5GXR 12 Jul 68 7-MHz direct-conversion receiver W0YBF 16 Jan 77 7-MHz receiver K6SDX 12 Apr 79 7-MHz ssb receiver and transmitter, simple VE3GSD 6 Mar 74 7-MHz ssb receiver and transmitter, simple Short circuit 62 Dec 74 80-meter receiver for the experimenter W6XM 24 Feb 81 80-meter receiver for the experimenter Comments 6 Jun 81 80-meter receiver, simple WB2EAV 25 Nov 86 Bandpass filters for receiver preselectors W7ZOI 18 Feb 75 Bandpass tuning, electronic, in the Drake R- Horner 58 Oct 73 4C BC-1206 for 7 MHz, converted W4FIN 30 Oct 70 BC-1206 for 7 MHz, converted Short circuit 72 Apr 71 BC-603 tank receiver, updating the WA6IAK 52 May 68 Better frequency stability for the Drake TR7 HB9ABO 21 Aug 87 Blanking the Woodpecker, part 2: a practical VK1DN 18 Feb 82 circuit Blanking the Woodpecker, part 2: a practical Comments, NP4B 8 Jul 82 circuit Blanking the Woodpecker, part 3: an audio VK1DN 22 Mar 82 blanker Blanking the Woodpecker: part 1 VK1DN 20 Jan 82 Card File station for 40 Meters, The W6XM 56 Sep 89 Weekender CAT control system for the Yaesu FT-757GX SM6CPI 26 Nov 87 CB to 10 fm transceiver conversion VE3FIT, VE3AQN 16 Feb 83 Collins 75A-4 hints (HN) W6VFR 68 Apr 72 Collins 75A-4 modifications (HN) W4SD 67 Jan 71 Collins receivers (letter) G3UFZ 90 Jan 78 Collins receivers, 300-Hz crystal filter for W1DTY 58 Sep 75 Communications receiver for 80 meters, IC VE3ELP 6 Jul 71 Communications receiver, five band K6SDX 6 Jun 72 Communications receiver, micropower WB9FHC 30 Jun 73 Communications receiver, micropower Short circuit 58 Dec 73 Communications receiver, miniaturized K4DHC 24 Sep 74 Communications receiver, optimum design for DJ2LR 10 Oct 76 Communications receiver, solid-state I5TDJ 32 Oct 75 Communications receiver, solid-state Correction 59 Dec 75 Communications receivers for the year 2000: DJ2LR 12 Nov 81 part 1 Communications receivers for the year 2000: DJ2LR 36 Dec 81 part 2 Communications receivers, high frequency, DJ2LR 20 Apr 80 recent developments in circuits and Communications receivers, miniature design K4DHC 18 Apr 76 ideas for Compact 20-meter CW receiver, A K1BQT 8 Jun 87 Compact 20-meter CW receiver, A Short circuit 6 Jul 87 Compact 20-meter CW receiver, A Short circuit 81 Sep 87 Compact SSB receiver K1BQT 10 Nov 83 Compact SSB receiver Comments KAOGPE 10 Mar 84 Companion receiver, all-mode W1SNN 18 Mar 73 Converter Tunes 4 to 18 MHz with No W5FG 26 May 89 Bandswitch Converter, hf, solid-state VE3GFN 32 Feb 72 Converter, tuned very low-frequency OH2KT 49 Nov 74 Converter, very low frequency receiving W2IMB 24 Nov 76 Crystal-controlled phase-locked converter W3VF 58 Dec 77 CW regenerator for Amateur receivers W3BYM 64 Oct 80 Designing a modern receiver WB3JZO 23 Nov 83 Designing a state-of-the-art receiver KA2WEU/DJ2LR 17 Nov 87 Digital HF radio: a sampling of techniques KA2WEU/DJ2LR 19 Apr 85 Digital HF radio: a sampling of techniques Short circuit 121 May 85 Digitally programmable high-frequency WA9HUV 10 Oct 78 communications receiver Digitally programmable high-frequency Comments Foot, 6 Apr 79 communications receiver WA9HUV Direct-conversion receivers W3FQJ 59 Nov 71 Direct-conversion receivers PA0SE 44 Nov 77 Direct-conversion receivers, improved K6BIJ 32 Apr 72 selectivity Direct-conversion receivers, simple active W7ZOI 12 Apr 74 filters for Diversity receiver, high-frequency, from the K4KJ 34 Apr 80 1930s Double-conversion hf receiver with Perolo 26 Oct 76 mechanical frequency readout Drake R-4C product detector, improving (HN) W3CVS 84 Mar 80 ESSA weather receiver W6GXN 36 May 68 Fet converter for 10 to 40 meters, second- VE3GFN 28 Jan 70 generation Fet converter for 10 to 40 meters, second- Short circuit 79 Jun 70 generation Fet converter, bandswitching, for 40, 20, 15 VE3GFN 6 Jul 68 and 10 Fet converter, bandswitching, for 40, 20, 15 postscript 68 May 69 and 10 Frequency calibration using 60 kHz WWVB W4ZPS 45 Mar 88 Frequency synthesized local-oscillator system W7GHM 60 Oct 78 Frequency synthesizer for the Drake R-4 W6NBI 6 Aug 72 Frequency synthesizer for the Drake R-4 Modification 74 Sep 74 (letter) General coverage communications receiver W6URH 10 Nov 77 Gonset converter, solid-state modification of Schuler 58 Sep 69 Hammarlund HQ215, adding 160-meter coverage W2GHK 32 Jan 72 Heath SB-650 frequency display, using with K2BYM 40 Jun 73 other receivers HF superhet, 20-meter N3ECZ 65 Nov 86 High dynamic range mixing with the Si8901 KB6QJ 11 Mar 88 High dynamic range receiver input stages DJ2LR 26 Oct 75 High-frequency DX receiver WB2ZVU 10 Dec 76 High-frequency receiver performance G4OBU 33 Feb 84 Improved stability and dial calibration for W3HVK 103 Nov 83 the Heathkit HW-8 (HN) Incremental tuning to your transceiver, VE3GFN 66 Feb 71 adding Inexpensive CW filter (HN) WB1AFQ 80 Jan 82 Low-noise 30-MHz preamplifier W1HR 38 Oct 78 Low-noise 30-MHz preamplifier Short circuit 94 Feb 79 Monitoring oscillator W2JIO 36 Dec 72 Multiband high-frequency converter K6SDX 32 Oct 76 Outboard receiver with a transceiver W1DTY 12 Sep 68 Outboard receiver with the SB-100, using an K4GMR 68 Feb 70 (HN) Overload response in the Collins 75A-4 W6ZO 42 Apr 70 receiver, improving Overload response in the Collins 75A-4 Short circuit 76 Sep 70 receiver, improving Pepperdyne receiver W6QIF 33 Nov 88 Phasing-type ssb receiver WA0JYK 6 Aug 73 Phasing-type ssb receiver Short circuit 58 Dec 73 Phasing-type ssb receiver Added note 63 Jun 74 (letter) Preamplifier, emitter-tuned, 21 MHz WA5SNZ 20 Apr 72 Preamplifier, low-noise high-gain transistor W2EEY 66 Feb 69 Preselector, general-coverage (HN) W5OZF 75 Oct 70 Q5er, solid-state W5TKP 20 Aug 69 Radio Interference to shortwave receivers W6XM 88 Jul 81 (HN) Receiver incremental tuning for the Swan 350 K1KXA 64 Jul 71 (HN) Receiver sweep alignment system WB6BIH 124 Nov 84 Receiver, Pocket, portable SSB WB6BIH 55 Nov 86 Receiver, reciprocating detector W1SNN 44 Nov 72 Receiver, reciprocating detector Correction 77 Dec 72 (letter) Receiver, versatile solid-state W1PLJ 10 Jul 70 Receiving RTTY with Heath SB receivers (HN) K9HVW 64 Oct 71 Reciprocating detector W1SNN 68 Oct 78 Regenerative detectors and a wideband W8YFB 61 Mar 70 amplifier for experimenters Rf amplifiers, selective K6BIJ 58 Feb 72 RTTY monitor receiver K4EEU 27 Dec 72 RTTY receiver-demodulator for net operation VE7BRK 42 Feb 73 RTTY with SB-300 W2ARZ 76 Jul 68 Shortwave converter, portable PY2PE1C 64 Apr 81 Shortwave receiver, portable PY2PE1C 67 Apr 84 Shortwave receiver, portable monoband, with PY2PE1C 42 Jan 80 electronic digital frequency readout Simple 40-meter receiver - Weekender W6XM 64 Sep 80 Simple direct conversion receiver WA3ENK 9 Dec 88 Simple receivers from complex ICs W6VEH 10 Nov 88 Simple shortwave broadcast receiver W6XM 83 Nov 83 Solid-state 75A-4 receiver KF7M 67 Nov 88 Superhet coilset, design with a microcomputer Sterrenburg, 113 Nov 84 F.A.S. SW receiver, a double conversion portable PY2PE1C 48 Nov 84 Swan 350 CW monitor (HN) K1KXA 63 Jun 72 Synthesizer, high resolution hf (letter) DJ2LR 6 Jan 79 Ten-Tec Omni-D, improved CW agc for (HN) W6OA 88 Jan 80 Thumbwheel frequency selector for the Yaesu KA9SNF 33 Nov 87 FT-757GX Tomorrow's receivers: what will the next 20 W7SX 8 Nov 87 years bring? Transceiver selectivity improved (HN) VE3BWD 74 Oct 70 Transceiver, 40-meter, for low-power WB5DJE 12 Apr 80 operation Transceivers, quasi-bilateral if for K1ZJH 75 Dec 84 Tuner overload, eliminating (HN) VE3GFN 66 Jan 73 Tuner overload, eliminating (HN) Attenuators for 69 Jan 74 (letter) Two-band novice superhet Thorpe 66 Aug 68 Two-band receiver, extending the modular WA3TFS 57 Nov 84 Two-band receiver, modular WA3TFS 53 Jul 83 Two-band receiver, modular Comments, WA3TFS 8 Sep 84 Understanding performance data of high- K6FM 30 Nov 81 frequency receivers Understanding performance data of high- Comments KL7HT, 8 Aug 82 frequency receivers K6FM Up-conversion receiver for the high- W2VJN 54 Nov 81 frequency bands: part 1 Up-conversion receiver for the high- W2VJN 20 Dec 81 frequency bands: part 2 Variable Gain 160-meter Preamp KD9SV 46 Oct 89 Weather receiver, low-frequency W6GXN 36 Oct 68 Woodpecker noise blanker DJ2LR 18 Jun 80 WWV receiver Hudor, Jr. 28 Feb 77 WWV receiver, fixed-tuned W6GXN 24 Nov 69 WWV receiver, regenerative WA5SNZ 42 Apr 73 WWV receiver, simple (HN) WA3JBN 68 Jul 70 WWV receiver, simple (HN) Short circuit 72 Dec 70 WWV receiver, simple (HN) WA3JBN 55 Dec 70 WWV-WWVH, amateur applications for W3FQJ 53 Jan 72 receivers and converters - vhf receivers and converters Title Author Page Issue ----- ------ ---- ----- 1296-MHz converter, solid-state VK4ZT 6 Nov 70 1296-MHz preamplifier WA6UAM 42 Oct 75 1296-MHz preamplifier, low-noise WA2VTR 50 Jun 71 1296-MHz preamplifier, low-noise Added note 65 Jan 72 (letter) 1296-MHz, double-balanced mixers for WA6UAM 8 Jul 75 144-432 MHz GaAs fet preamp JH1BRY 38 Nov 79 144-MHz converter (HN) K0VQY 71 Aug 70 144-MHz converter (letter) W0LER 71 Oct 71 144-MHz converter, hot-carrier diode K8CJU 6 Oct 69 144-MHz converter, modular W6UOV 64 Oct 70 144-MHz converters, choosing fets for (HN) K6JYO 70 Aug 69 144-MHz preamp, low-noise W1DTY 40 Apr 76 144-MHz preamp, super (HN) K6HCP 72 Oct 69 144-MHz preamplifier, improved WA2GCF 25 Mar 72 144-MHz preamplifier, improved Added notes 73 Jul 72 2-Meter Converter with Q Multiplier WA9HUV 33 Nov 89 220-MHz mosfet converter WB2EGZ 28 Jan 69 220-MHz mosfet converter Short circuit 76 Jul 69 2304-MHz converter, solid-state K2JNG, WA2LTM, 16 Mar 72 WA2VTR 2304-MHz preamplifier, solid-state WA2VTR 20 Aug 72 28-30 MHz preamplifier for satellite W1JAA 48 Oct 75 reception 432 MHz preamp (HN) W1DTY 66 Aug 69 432 MHz preamplifier and converter WA2GCF 40 Jul 75 432-MHz converter, low-noise K6JC 34 Oct 70 432-MHz fet converter, low noise WA6SXC 18 May 68 50-MHz preamplifier, improved WA2GCF 46 Jan 73 Cavity bandpass filters W4FXE 46 Mar 80 Communications receivers for the year 2000: DJ2LR 12 Nov 81 part 1 Communications receivers for the year 2000: DJ2LR 36 Dec 81 part 2 Converters for six and two meters, mosfet WB2EGZ 41 Feb 71 Converters for six and two meters, mosfet Short circuit 96 Dec 71 Cooled preamplifier for vhf-uhf WA0RDX 36 Jul 72 Extending receive coverage for the IC-02 and WB6GTM 77 Jul 86 IC-04 Fet converters for 50, 144, 220 and 432 MHz W6AJF 20 Mar 68 Filter-preamplifiers for 50 and 144 MHz, W5KNT 6 Feb 71 etched Fm channel scanner W2FPP 29 Aug 71 Fm communications receiver, modular K8AUH 32 Jun 69 Fm communications receiver, modular Correction 71 Jan 70 Fm receiver frequency control (letter) W3AFN 65 Apr 71 Fm receiver performance, comparison of VE7ABK 68 Aug 72 Fm receiver, multichannel for six and two W1SNN 54 Feb 74 Fm receiver, tunable vhf K8AUH 34 Nov 71 Fm receiver, uhf WA2GCF 6 Nov 72 Fm repeaters, receiving system degradation in K5ZBA 36 May 69 HW-17A, perking up (HN) WB2EGZ 70 Aug 70 Improving vhf/uhf receivers W1JAA 44 Mar 76 Interesting preamplifier for 144 MHz (HN) WA2GFP 50 Nov 81 Interference, scanning receiver (HN) K2YAH 70 Sep 72 K9LHA 2-meter synthesizer, extending the K9LHA 52 Dec 81 range of (HN) lnterdigital preamplifier and comb-line W5KHT 6 Aug 70 bandpass filter for vhf and uhf Modular transmit and receive converters for N6JH 17 Mar 87 902 MHz Monitor receivers, two-meter fm WB5EMI 34 Apr 74 Optical fm receiver Poon and Pieper 53 Nov 83 Optical fm receiver Short circuit 85 Jan 84 Optical fm receiver Comment, W6OAL 13 Jun 84 Overload problems with vhf converters, W1OOP 53 Jan 73 solving Receiver alignment techniques, vhf fm K4IPV 14 Aug 75 Receiver, modular two-meter fm WA2GFB 42 Feb 72 Receiver, vhf fm WA2GCF 8 Nov 75 Receiving converter, vhf four-band W3TQM 64 Oct 76 Scanning receiver for vhf fm, improved WA2GCF 26 Nov 74 Scanning receiver modifications, vhf fm (HN) WA5WOU 60 Feb 74 Scanning receivers for two-meter fm K4IPV 28 Aug 74 Six-meter converter, improved K1BQT 50 Aug 70 Six-meter mosfet converter WB2EGZ 22 Jun 68 Six-meter mosfet converter Short circuit 34 Aug 68 Squelch-audio amplifier for fm receivers WB4WSU 68 Sep 74 Ssb mini-tuner K1BQT 16 Oct 70 Synthesized 2-meter mobile stations, W9CGI 20 Jun 80 automation for Terminator, 50-ohm for vhf converters WA6UAM 26 Feb 77 Two-meter converter, 1.5 dB NF WA6SXC 14 Jul 68 Two-meter mosfet converter WB2EGZ 22 Aug 68 Two-meter mosfet converter neutralizing 77 Oct 68 Two-meter preamp, MM5000 W4KAE 49 Oct 68 Vhf converter performance, optimizing (HN) K2FSQ 18 Jul 68 Vhf fm receiver (letter) W8IHQ 76 May 73 Vhf receiver scanner K2LZG 22 Feb 73 Vhf superregenerative receiver, low-voltage WA5SNZ 22 Jul 73 Vhf superregenerative receiver, low-voltage Short circuit 64 Mar 74 VHF/UHF world: low noise receiver update - W1JR 77 Nov 87 part1 VHF/UHF world: low noise receiver update - W1JR 72 Dec 87 part2 VHF/UHF world: VHF/UHF receivers W1JR 42 Mar 84 receivers and converters - test and troubleshooting Title Author Page Issue ----- ------ ---- ----- Receiver alignment Allen 64 Jun 68 Rf and i-f amplifiers, troubleshooting Allen 60 Sep 70 Signal injection in ham receivers Allen 72 May 68 Signal tracing in ham receivers Allen 52 Apr 68 Weak-signal source, 144 and 432 MHz K6JC 58 Mar 70 Weak-signal source, variable-output K6JYO 36 Sep 71 RTTY Title Author Page Issue ----- ------ ---- ----- Active bandpass filter for RTTY W4AYV 46 Apr 79 AFSK generator (HN) F8KI 69 Jul 76 AFSK generator and demodulator WB9ATW 26 Sep 77 AFSK generator, an accurate and practical K0SFU 56 Aug 80 AFSK generator, crystal-controlled K7BVT 13 Jul 72 AFSK generator, crystal-controlled W6LLO 14 Dec 73 AFSK generator, crystal-controlled Sluggish 59 Dec 74 oscillator AFSK oscillators, solid-state WA4FGY 28 Oct 68 AFSK, digital WA4VOS 22 Mar 77 AFSK, digital Short circuit 94 May 77 An RTTY Converter W1UO 76 Jun 89 Audio-frequency keyer, simple W2LTJ 56 Aug 75 Audio-frequency shift keyer KH6FMT 45 Sep 76 Audio-frequency shift keyer, simple (C&T) W1DTY 43 Apr 76 Audio-shift keyer, continuous-phase VE3CTP 10 Oct 73 Audio-shift keyer, continuous-phase Short circuit 64 Mar 74 Automatic frequency control for receiving W5NPO 50 Sep 71 RTTY Automatic frequency control for receiving Added note 66 Jan 72 RTTY (letter) Autostart monitor receiver K4EEU 37 Dec 72 Autostart, digital RTTY K4EEU 6 Jun 73 Baudot, a vote for (letter) W6NRM 8 Mar 82 Carriage return, adding to the automatic K4EEU 71 Sep 74 line-feed generator (HN) Cleaning teleprinters (HN) W8CD 86 May 78 Coherent frequency-shift keying, need for K3WJQ 30 Jun 74 Coherent frequency-shift keying, need for Added notes 58 Nov 74 (letter) CRT intensifier for RTTY K4VFA 18 Jul 71 Crystal test oscillator and signal generator K4EEU 46 Mar 73 CW and RTTY, digital audio filter for W1OER 60 Aug 83 CW memory for RTTY identification W6LLO 6 Jan 74 Digital reperf/TD WB9ATW 58 Nov 78 DT-500 demodulator K9HVW, K4OAH, 24 Mar 76 WB4KUR DT-500 demodulator Short circuit 85 Oct 76 DT-600 demodulator K9HVW, K4OAH, 8 Feb 76 WB4KUR DT-600 demodulator Letter, K5GZR 78 Sep 76 DT-600 demodulator Short circuit 85 Oct 76 Dual demodulator terminal unit KB9AT 74 Oct 78 Dual demodulator terminal unit Comments WB6PMV, 6 Oct 79 KB9AT Duplex audio-frequency generator with AFSK WB6AFT 66 Sep 79 features Electronic speed conversion for RTTY WA6JYJ 36 Dec 71 teleprinters Electronic speed conversion for RTTY Printed circuit 54 Oct 72 teleprinters for Electronic teleprinter keyboard W0PHY 56 Aug 78 Frequency-shift meter, RTTY VK3ZNV 53 Jun 70 Hellschreiber (letter) K6KA 6 Mar 80 Hellschreiber (letter) W6DKZ 6 Mar 80 Hellschreiber (letter) Comment, G5XB 6 Sep 80 LED tuning indicator for RTTY WA0ELA 50 Mar 80 Line feed, automatic for RTTY K4EEU 20 Jan 73 Line-end Indicator, IC W2OKO 22 Nov 75 Mainline ST-5 autostart and antispace K2YAH 46 Dec 72 Mainline ST-5 RTTY demodulator W6FFC 14 Sep 70 Mainline ST-5 RTTY demodulator Short circuit 72 Dec 70 Mainline ST-6 RTTY demodulator W6FFC 6 Jan 71 Mainline ST-6 RTTY demodulator Short circuit 72 Apr 71 Mainline ST-6 RTTY demodulator, more uses W6FFC 69 Jul 71 for (letter) Mainline ST-6 RTTY demodulator, W6FFC 50 Feb 71 troubleshooting Message generator, random access memory RTTY K4EEU 8 Jan 75 Message generator, RTTY W6OXP,W8KCO 30 Feb 74 Modulator-demodulator for vhf operation W6LLO 34 Sep 78 Monitor scope, phase-shift W3CIX 36 Aug 72 Monitor scope, RTTY, Heath HO-10 and SB-610 K9HVW 70 Sep 74 as (HN) Monitor scope, RTTY, solid-state WB2MPZ 33 Oct 71 New MSO for RTTY (letter) N2EO 12 Jul 84 Performance and signal-to-noise ratio of low- K8SR 62 Dec 76 frequency shift RTTY Phase-coherent RTTY modulator K5PA 26 Feb 79 Phase-locked loop AFSK generator K7ZOF 27 Mar 73 Phase-locked loop RTTY terminal unit W4FQM 8 Jan 72 Phase-locked loop RTTY terminal unit Correction 60 May 72 Phase-locked loop RTTY terminal unit Power supply for 60 Jul 74 Phase-locked loop RTTY terminal unit Optimization 22 Sep 75 Phase-locked loop RTTY terminal unit Update, W4AYV 16 Aug 76 Precise tuning with ssb gear W0KD 40 Oct 70 Printed circuit for RTTY speed converter W7POG 54 Oct 72 RAM RTTY message generator, increasing F2ES 86 Oct 77 capacity of (HN) Receiver-demodulator for RTTY net operation VE7BRK 42 Feb 73 Ribbon re-inkers W6FFC 30 Jun 72 RTTY and AtariTM computer K5VUV 36 Jul 83 RTTY and AtariTM computer Short circuit 10 Feb 84 RTTY converter, miniature IC K9MRL 40 May 69 RTTY converter, miniature IC Short circuit 80 Aug 69 RTTY distortion: causes and cures WB6IMP 36 Sep 72 RTTY for the blind (letter) VE7BRK 76 Aug 72 RTTY line-length indicator (HN) W2UVF 62 Nov 73 RTTY oscilloscope input using line W6XM 87 Sep 84 transformers (HN) RTTY reception with Heath SB receivers (HN) K9HVW 64 Oct 71 RTTY tuning indicator, a free (HN) N1AW 74 Oct 81 RTTY with the SB-300 W2ARZ 76 Jul 68 RTTY zero-beat indicator (HN) W2QLI 78 Oct 83 RTTY, introduction to K6JFP 38 Jun 69 Run RTTY on your Timex NU4V 110 Apr 85 Run RTTY on your VIC-20 W5TRS 120 Apr 85 Selcom K9HVW, WB4KUR, 10 Jun 78 K4EID Serial converter for 8-level teleprinters VE3CTP 67 Aug 77 Serial converter for 8-level teleprinters Short circuit 68 Dec 77 Signal Generator, RTTY W7ZTC 23 Mar 71 Signal Generator, RTTY Short circuit 96 Dec 71 Simple circuit replaces jack patch panel K4STE 25 Apr 76 Slow ASCII W3FVC 6 Jun 81 Speed control, electronic, for RTTY W3VF 50 Aug 74 SSB transmitters, FSK adapter for WA3PLC 12 Jul 81 SSB transmitters, FSK adapter for Comments N1AL, 8 Mar 82 WA3PLC SSB transmitters, FSK adapter for Comments WB5DPZ, 8 Oct 82 N1AL ST-5 keys polar relay (HN) W0LPD 72 May 74 Swan 350 and 400 equipment on RTTY (HN) WB2MIC 67 Aug 69 Synchrophase afsk oscillator W6FOO 30 Dec 70 Synchrophase RTTY reception W6FOO 38 Nov 70 Tape editor W3EAG 32 Jun 77 Teleprinters, new look in W6JTT 38 Jul 70 Terminal unit, phase-locked loop W4FQM 8 Jan 72 Terminal unit, phase-locked loop Correction 60 May 72 Terminal unit, phase-locked loop W4AYV 36 Feb 75 Terminal unit, variable-shift RTTY W3VF 16 Nov 73 Test generator, RTTY WB9ATW 64 Jan 78 Test generator, RTTY (HN) W3EAG 67 Jan 73 Test generator, RTTY (HN) W3EAG 59 Mar 73 Test-message generator, RTTY K9GSC, K9PKQ 30 Nov 76 Time/date printout W0LZT 18 Jun 76 Time/date printout Short circuit 68 Dec 77 Timex/Sinclair newsletter (letter) AD1B 12 Jul 84 TRS-80 color computer for RTTY W1OER 62 Jun 83 Tuning indicator for RTTY and packet radio W0HZR 65 Sep 88 VIC-20 printer (HN) W2QLI 88 Sep 84 VIC-20 printer (HN) Short circuit 145 Mar 85 Voltage supply, precision for phase-locked WA6TLA 60 Jul 74 terminal unit (HN) XK2C AFSK generator, the W3HVK 58 Nov 80 satellites Title Author Page Issue ----- ------ ---- ----- 28-30 MHz preamplifier for satellite W1JAA 48 Oct 75 reception 432-MHz OSCAR antenna (HN) W1JAA 58 Jul 75 Amsat-Oscar D W3PK, G3ZCZ 16 Apr 78 Antenna accuracy in satellite tracking N5KR 24 Jun 79 systems Antenna control, automatic azimuth/elevation WA3HLT 26 Jan 75 for satellite communications Antenna control, automatic azimuth/elevation Correction 58 Dec 75 for satellite communications Antenna, simple satellite (HN) WA6PXY 59 Feb 75 Antennas, simple, for satellite K4GSX 24 May 74 communications Az-el antenna mount for satellite W2LX 34 Mar 75 communications Calcu-puter, OSCAR W9CGI 34 Dec 78 Circularly-polarized ground-plane antenna K4GSX 28 Dec 74 for satellite communications Communications, first step to satellite K1MTA 52 Nov 72 Communications, first step to satellite Added notes 73 Apr 73 (letter) Demodulator, telemetry, PSK, for OSCAR 10 G3RUH 50 Apr 85 Elevation indicator, inexpensive W5JTL 67 Jun 85 First HT-to-HT QSO via OSCAR 10 WA2LQQ 32 Sep 84 Future of the amateur satellite service K2UBC 32 Aug 77 G.O.E.S. reception: a simple approach WA4WDL 46 Jan 84 Geostationary satellite bearings with the TI- WA6BKC 87 Apr 81 58/59 programmable calculator (HN) Geostationary satellites, locating W2TQK 66 Oct 81 Geostationary satellites, locating Comments W1DHX 8 Jan 82 Geostationary satellites, locating Short circuit 89 Jan 82 Geostationary satellites, locating Comments W2TI 8 Feb 82 Graphic azimuth and elevation calculator WB0VGI 25 Jan 83 Introducing satellite communications G3ZCZ 10 Apr 86 Locate orbiting satellites W0ZWW 72 Sep 83 Medical data relay via Oscar K7RGE 67 Apr 77 Moon-tracking by computer K6WX 38 Mar 84 Oscar 7, communications techniques for G3ZCZ 6 Apr 74 Oscar antenna (C&T) W1DTY 50 Jun 76 Oscar antenna, mobile (HN) W6OAL 67 May 76 Oscar az-el antenna system WA1NXP 70 May 78 Oscar tracking program, HP-65 calculator WA3THD 71 Jan 76 (letters) Packet radio PSK modem for JAS-1/FO-12 G3RUH 8 Feb 87 Phase III spacecraft orbits, geometry of W8MQW 68 Oct 80 Programming for automated satellite KP4MD 68 Jun 78 communication Receiving preamplifier for OSCAR 8 Mode J K1RX and Puglia 20 Jun 78 Satellite communications on 10 meters G3IOR 12 Dec 79 (letter) Satellite tracker, digitally-controlled KA8OBL 102 Sep 85 Satellite tracking - pointing and range with Ball, John A. 40 Feb 78 a pocket calculator Signal polarization, satellite KH6IJ 6 Dec 72 Signals from space, receiving K8UR 67 Nov 84 The Guerri report: communication satellites W6MGI 108 Jun 86 The Guerri report: super speed semiconductors W6MGI 109 Oct 86 Tracking satellites in elliptical orbits WA6VJR 46 Mar 81 Tracking the OSCAR satellites Harmon, WA6UAP 18 Sep 77 Update on ACSSB level-one adapter, project Comments: WB6JNN 9 Nov 86 OSCAR (Oct. 86) Work OSCAR 10 with your HT WA2LQQ 29 Sep 84 semiconductors Title Author Page Issue ----- ------ ---- ----- Amplifiers, biasing Class-A bipolar KQ7B 32 Aug 82 transistor Antenna bearings for geostationary N6TX 67 May 78 satellites, calculating Antenna switch for meters, solid-state K2ZSQ 48 May 69 Avalanche transistor circuits W4NVK 22 Dec 70 Beta master, the K8ERV 18 Aug 68 Charge flow In semiconductors WB6BIH 50 Apr 71 Collector Matching Networks KZ9J 34 Jan 89 Converting a vacuum-tube receiver to solid- W1OOP 26 Feb 69 state Converting a vacuum-tube receiver to solid- Short circuit 76 Jul 69 state Converting vacuum tube equipment to solid- W2EEY 30 Aug 68 state Cooling semiconductors part 1: designing and Martin, Vaughn D. 33 Jul 84 using heatsinks Cooling semiconductors part 2: blowers and Martin, Vaughn D. 52 Aug 84 fans Curve master, the K8ERV 40 Mar 68 Diodes, evaluating W5JJ 52 Dec 71 Dynamic transistor tester (HN) VE7ABK 65 Oct 71 Elmer's Notebook: FETS-The Other Transistors W1SL 104 Feb 89 Elmer's Notebook: Visual Aids- Light W1SL 56 Jul 89 Emitting Diodes Elmer's Notebook: Visual Aids- Liquid W1SL 81 Aug 89 Crystal Displays European semiconductor numbering system (C&T) W1DTY 42 Apr 76 Fet bias problems simplified WA5SNZ 50 Mar 74 Fet biasing W3FQJ 61 Nov 72 Fetrons, solid-state replacements for tubes W1DTY 4 Aug 72 Fetrons, solid-state replacements for tubes Added notes 66 Oct 73 Fetrons, solid-state replacements for tubes Added notes 62 Jun 74 Frequency multipliers W6GXN 6 Aug 71 Frequency multipliers, transistor W6AJF 49 Jun 70 GaAs FET performance and preamplifier K8UR 38 Mar 83 application GaAs FET performance and preamplifier Comments, KC0W 12 Jul 83 application GaAs field-effect transistors, introduction WA2ZZF 74 Jan 78 Glass semiconductors W1EZT 54 Jul 69 Grid-dip oscillator, solid-state conversion W6AJZ 20 Jun 70 of Heatsink problems, how to solve transistor WA5SNZ 46 Jan 74 High dynamic range mixing with the Si8901 KB6QJ 11 Mar 88 Impulse generator, snap diode Siegal, Turner 29 Oct 72 Injection lasers (letter) Mims 64 Apr 71 Injection lasers, high power Mims 28 Sep 71 Linear power amplifier, high power solid- Chambers 6 Aug 74 state Linear transistor amplifier W3FQJ 59 Sep 71 Long-tail transistor biasing W2DXH 64 Apr 68 Matching techniques, broadband, for WA7WHZ 30 Jan 77 transistor rf amplifiers Microwave amplifier design, solid state WA6UAM 40 Oct 76 Mobile converter, solid-state modification of Schuler 58 Sep 69 Mosfet circuits W3FQJ 50 Feb 75 Mosfet power amplifier, 160 - 6 meters WA1WLW 12 Nov 78 Mosfet transistors (HN) WB2EGZ 72 Aug 69 Mospower fet (letter) W3QQM 110 Mar 78 Motorola fets (letter) W1CER 64 Apr 71 Motorola MPS transistors (HN) W2DXH 42 Apr 68 Neutralizing small-signal amplifiers WA4WDK 40 Sep 70 Noise, zener-diode (HN) VE7ABK 59 Jun 75 Parasitic oscillations in high-power W0KGI 54 Sep 70 transistor rf amplifiers Pentode replacement (HN) W1DTY 70 Feb 70 Power dissipation ratings of transistors WN9CGW 56 Jun 71 Power fets W3FQJ 34 Apr 71 Power transistors, parallelling (HN) WA5EKA 62 Jan 72 Practically speaking: non-ideal linear IC K4IPV 72 Jul 88 amplifiers typical problems Practically speaking: solid state rectifiers K4IPV 51 Aug 86 Practically speaking: substituting K4IPV 92 Sep 86 transistors - part1 Practically speaking: substituting K4IPV 66 Oct 86 transistors - part2 Predicting close encounters: OSCAR 7 and K2UBC 62 Jul 79 OSCAR 8 Protecting solid-state devices from voltage WB5DEP 74 Jun 78 transients Relay, transistor replaces (HN) W3NK 72 Jan 70 Replace the unijunction transistor K9VXL 58 Apr 68 Rf power detecting devices K6JYO 28 Jun 70 Rf power transistors, how to use WA7KRE 8 Jan 70 Simple Infrared Detector, A (HN) K1ZJH 27 Jun 89 Snap diode impulse generator Siegal, Turner 29 Oct 72 Solid-state replacements AK7N 46 Apr 83 Solid-state Switching The Midland 13-509, VE2HOT 17 Jun 89 The Weekender: Surplus transistors, identifying W2FPP 38 Dec 70 Switching Inductive loads with solid-state WA6ROC 99 Jun 78 devices (HN) The Guerri report: super speed semiconductors W6MGI 109 Oct 86 Thyristors, introduction to WA7KRE 54 Oct 70 Transconductance tester for field-effect W6NBI 44 Sep 71 transistors Transistor amplifiers, tabulated W5JJ 30 Mar 71 characteristics of Transistor and diode tester ZL2AMJ 65 Nov 70 Transistor biasing, back to basics WD4C 91 Dec 84 Transistor breakdown voltages WA5EKA 44 Feb 75 Transistor lead identification With a DVM K0GSS 62 Oct 89 Transistor storage (HN) K8ERV 58 Jun 68 Transistor tester WA6NIL 48 Jul 68 Transistor tester for leakage and gain W4BRS 68 May 68 Transistor testing Allen 62 Jul 70 Transistor-tube talk (HN) WA4NED 25 Jun 68 Transistors for vhf transmitters (HN) W1OOP 74 Sep 69 Trapatt diodes (letter) WA7NLA 72 Apr 72 Troubleshooting around fets Allen 42 Oct 68 Troubleshooting transistor ham gear Allen 64 Jul 68 Understanding and Using 723 Voltage K3OF 42 Mar 89 Regulators Varactor diodes from rectifiers W6WTU 40 Jun 90 Versatile Transistor/Diode Tester W5JE and W2YM 30 Aug 89 Vfo transistors (HN) W1OOP 74 Nov 69 VHF/UHF world: the ubiquitous diode W1JR 51 Feb 87 VHF/UHF world: the ubiquitous diode, part 2 W1JR 55 Mar 87 Y parameters in rf design, using WA0TCU 46 Jul 72 Zener diodes (HN) K3DPJ 79 Aug 68 Zener tester, low voltage (HN) K3DPJ 72 Nov 69 single sideband Title Author Page Issue ----- ------ ---- ----- 1296-MHz ssb transceiver WA6UAM 8 Sep 74 144-MHz linear, 2 kW W6UOV, W6ZO, K6DC 26 Apr 70 144-MHz low-drive kilowatt linear W6HHN 26 Jul 70 144-MHz transverter, the TR-144 K1RAK 24 Feb 72 3-500Z in amateur service, the W6SAI 56 Mar 68 432 MHz rf power amplifier K6JC 40 Apr 70 432-MHz ssb converter K6JC 48 Jan 70 432-MHz ssb converter Short circuit 79 Jun 70 432-MHz ssb, practical approach to WA2FSQ 6 Jun 71 ACSSB: a level-one adapter WB6JNN 10 Oct 86 Adjusting SSB amplifiers AG6K 33 Sep 85 Balanced modulator, integrated-circuit K7QWR 6 Sep 70 Balanced modulators, dual fet W3FQJ 63 Oct 71 Better sounding SSB AG6K 58 Feb 84 Better sounding SSB Comments W2OZH 13 Jun 84 Communications receiver, phasing-type WA0JYK 6 Aug 73 Converting a-m power amplifiers to ssb WA4GNW 55 Sep 68 service Converting the Swan 120 to two meters K6RIL 8 May 68 Detector, ssb, IC (HN) K4ODS 67 Dec 72 Detector, ssb, IC (HN) Correction 72 Apr 73 Detectors, ssb Belt 22 Nov 68 Development of Amateur SSB: a brief history K4KJ 12 Sep 84 Development of Amateur SSB: a brief history Comments, AG4R 8 Dec 84 Double-balanced mixers W1DTY 48 Mar 68 Double-balanced modulator, broadband WA6NCT 8 Mar 70 Early single-sideband transmitter (ham radio W6SAI 30 Dec 81 techniques) Electronic bias switching for linear W6VFR 50 Mar 75 amplifiers Elmer's notebook: power measurements W1SL 100 Jan 88 Elmer's notebook: SSB basics- generating the W1SL 117 Nov 88 signal Elmer's notebook: SSB basics- receiving the W1SL 117 Dec 88 signal Filters, single-sideband Belt 40 Aug 68 Filters, ssb (HN) K6KA 63 Nov 73 Frequency dividers for ssb W7BZ 24 Dec 71 Frequency translation in ssb transmitters Belt 22 Sep 68 Generating ssb signals with suppressed Belt 24 May 68 carriers Guide to single sideband, a beginner's Belt 66 Mar 68 Ham radio techniques W6SAI 106 Oct 84 Hang agc circuit for sob and CW W1ERJ 50 Sep 72 Inexpensive SSB for 10 meters AD5X 30 Jun 90 Intermittent voice operation of power tubes W6SAI 24 Jan 71 Linear amplifier design: Part 1 W6SAI 12 Jun 79 Linear amplifier design: Part 2 W6SAI 34 Jul 79 Linear amplifier design: Part 3 W6SAI 58 Aug 79 Linear amplifier performance, improving W4PSJ 68 Oct 71 Linear amplifier, 100-watt W6WR 28 Dec 75 Linear amplifier, five-band conduction-cooled W9KIT 6 Jul 72 Linear amplifier, five-band kilowatt W4OQ 14 Jan 74 Linear amplifier, five-band kilowatt lmproved 59 Dec 74 operation Linear amplifier, HF solid-state kilowatt, WA7SPR 67 Feb 85 mobile Linear amplifier, homebrew five-band W7IV 30 Mar 70 Linear amplifier, modular, for the high- K8RA 12 Jan 81 frequency Amateur bands Linear amplifier, modular, for the high- Comments K1THP 6 Mar 81 frequency Amateur bands Linear for 80-10 meters, high-power W6HHN 56 Apr 71 Linear for 80-10 meters, high-power Short circuit 96 Dec 71 Linear power amplifiers Belt 16 Apr 68 Linear, five-band hf W7DI 6 Mar 72 Linearity meter for ssb amplifiers W4MB 40 Jun 76 Linears, three bands with two (HN) W4NJF 70 Nov 69 lntermodulation-distortion measurements on W6VFR 34 Sep 74 ssb transmitters Minituner, ssb K1BQT 16 Oct 70 Modifying the Heath SB-200 amplifier for the W6UOV 32 Jan 71 new 8873 zero-bias triode Oscillators, ssb Belt 26 Jun 68 Peak envelope power, how to measure W5JJ 32 Nov 74 Phase-shift networks, design criteria for G3NRW 34 Jun 70 Phase-shift ssb generators Belt 20 Jul 68 Phasing networks (letter) W2ESH 6 Nov 78 Power supplies for single sideband Belt 38 Feb 69 Pre-emphasis for asb transmitters OH2CD 38 Feb 72 Precise tuning with ssb gear W0KD 40 Oct 70 Rating tubes for linear amplifier service W6UOV, W6SAI 50 Mar 71 Rf clipper for the Collins S-line K6JYO 18 Aug 71 Rf clipper for the Collins S-line Letter 68 Dec 71 Rf speech Processor, sob W2MB 18 Sep 73 Sideband location (HN) K6KA 62 Aug 73 Six-meter transverter K8DOC, K8TVP 44 Dec 68 Solid-state circuits for ssb Belt 18 Jan 69 Solid-state transmitting converter for 144- W6NBI 6 Feb 74 MHz ssb Solid-state transmitting converter for 144- Short circuit 62 Dec 74 MHz ssb Speech clipper, IC K6HTM 18 Feb 73 Speech clipper, IC Added notes 64 Oct 73 (letter) Speech clipper, rf, construction G6XN 12 Dec 72 Speech clippers, rf, performance of G6XN 26 Nov 72 Speech clippers, rf, performance of Added notes 58 Aug 73 Speech clippers, rf, performance of Added notes 72 Sep 74 Speech clipping K6KA 24 Apr 69 Speech clipping in single-sideband equipment K1YZW 22 Feb 71 Speech process, logarithmic WA3FIY 38 Jan 70 Speech processing W1DTY 60 Jun 68 Speech processing, principles of ZL1BN 28 Feb 75 Speech processing, principles of Added notes 75 May 75 Speech processing, principles of Added notes 64 Nov 75 Speech processor for ssb K6PHT 22 Apr 70 Speech processor, split-band N7WS 12 Sep 79 Speech Processor, ssb VK9GN 31 Dec 71 Speech splatter on single sideband W4MB 28 Sep 75 Ssb exciter, 5-band K1UKX 10 Mar 68 Ssb generator, 9-MHz W9KIT 6 Dec 70 Ssb generator, phasing-type W7CMJ 22 Apr 73 Ssb generator, phasing-type Added comments 65 Nov 73 (letter) Ssb phasing techniques, review VK2ZTB 52 Jan 78 Ssb phasing techniques, review Short circuit 94 Feb 79 Ssb phasing techniques, review (letter) WB9YEM 82 Aug 78 Ssb transceiver, IC, for 80 meters VE3GSD 48 Apr 76 Switching and linear amplification W3FQJ 61 Oct 71 Syllabic vox system for Drake equipment W6RM 24 Aug 76 Transceiver, 3.5-MHz ssb VE6ABX 6 Mar 73 Transceiver, high-frequency with digital DJ2LR 12 Mar 78 readout Transceiver, miniature 7-MHz W7BBX 16 Jul 74 Transceiver, single-band ssb W1DTY 8 Jun 69 Transceiver, ssb, IC G3ZVC 34 Aug 74 Transceiver, ssb, IC Circuit change 62 Sep 75 (letter) Transceiver, ssb, using LM373 IC W5BAA 32 Nov 73 Transmitter alignment Allen 62 Oct 69 Transmitter and receiver for 40 meters, ssb VE3GSD 6 Mar 74 Transmitter and receiver for 40 meters, ssb Short circuit 62 Dec 74 Transmitter, phasing-type ssb WA0JYK 8 Jun 75 Transmitting mixers, 6 and 2 meters K2ISP 8 Apr 69 Transverter, low-power, high-frequency W0RBR 12 Dec 78 Trapezoidal monitor scope VE3CUS 22 Dec 69 TTL ICs, using in ssb equipment G4ADJ 18 Nov 75 Tuning up ssb transmitters Allen 62 Nov 69 TV sweep tubes in linear service, full-blast W6SAI, W6UOV 9 Apr 68 operation of Two-tone oscillator for ssb testing W6GXN 11 Apr 72 Vacuum tubes, using odd-ball types in linear W5JJ 58 Sep 72 amplifier service Vhf, uhf transverter, input source for (HN) F8MK 69 Sep 70 Vox and mox systems for ssb Belt 24 Oct 68 Vox, versatile W9KIT 50 Jul 71 Vox, versatile Short circuit 96 Dec 71 Weaver modulation, 2-meter transmitter N1COX 12 Jul 85 software Title Author Page Issue ----- ------ ---- ----- Artificial Intelligence Application in NULN 30 Oct 89 Amateur Radio BASIC program analyzes simple ladder networks W3NQN 32 Aug 87 BASIC program analyzes simple ladder networks Short circuit 97 Oct 87 Design a no-tune amplifier with your W7DHD 8 Sep 87 personal computer Design program for the grounded-grid 3-500Z W7DHD 8 Jun 88 EME link calculator program KE6ZE 70 Feb 86 EME link calculator program Comments, KC8OH 9 Apr 86 Get on SSTV - with the C-64 I2CAB, I2AED, 43 Oct 86 ed. K9EI Great circle computations using LOTUS 1-2-3 AD1B 31 Sep 88 Ham Radio Techniques: The MN analysis W6SAI 34 Feb 90 program, (that was then, this is now) L-band ground wave propagation program WA9GRF and 103 Jan 86 Joseph R. Hennel Morse code teaching tools for the C-64 and KB8CS 35 Jan 88 128 Pathfinder-part 2 K3FR 47 Oct 88 Pathfinder: improved MINIMUF program K3FR 26 May 88 PV-4 on Your Commodore WA3EKL 64 Oct 89 PV-4 on Your Commodore Short circuit 64 Jan 90 T158/TI59 (HN) K3VGX 65 Mar 82 Using macros with packet AD1B 82 Oct 88 Using spreadsheet programs for amateur radio AD1B 95 Dec 86 projects television Title Author Page Issue ----- ------ ---- ----- 50 years of television W1DTY, K4TWJ 36 Feb 76 50 years of television Letter, WA6JFP 77 Sep 76 A tour through an NTSC TV station - part 1 KL7AJ 57 Dec 87 (historical aspects) Broadcast quality television camera WA8RMC 10 Jan 78 Callsign generator WB2CPA 34 Feb 77 Camera and monitor, sstv VE3EGO, Watson 38 Apr 69 Caption device for SSTV G3LTZ 61 Jul 77 Clean ATV the Modern Way WA1IAO 32 Jan 89 Color tv, slow-scan W4UMF, WB8DQT 59 Dec 69 Computer, processing, sstv pictures W4UMF 30 Jul 70 Console, video, for ATV WB8LGA 12 Jan 80 CRT character enhancer W9CGI 66 Aug 82 Display SSTV pictures on a fast-scan TV K6AEP 12 Jul 79 Fast- to slow-scan conversion, tv W3EFG, W3YZC 32 Jul 71 Fast-scan camera converter for sstv WA9UHV 22 Jul 74 Frequency-selective and sensitivity- DK1BF 36 Nov 75 controlled sstv preamp Get on SSTV - with the C-64 K9EI 43 Oct 86 Get on SSTV - with the C-64 Short circuit 97 Oct 87 Helium Balloon ATV Launched Over Indiana WB8ELK 72 Jun 89 Interlaced sync generator for ATV camera WA8RMC 10 Sep 77 control Medium-scan television W9NTP 54 Dec 81 Remarks on television series (comment) KB9F0 6 May 88 Slow-scan television WA2EMC 52 Dec 69 Slow-to-fast-scan television converters, an K4TWJ 44 Aug 76 introduction SSTV, applying microcomputers to G3ZCZ/4X 20 Jun 82 Sync generator for black-and-white 525-line K4EEU 79 Jul 77 TV Sync generator, IC, for ATV W0KGI 34 Jul 75 Sync generator, sstv (letter) W1IA 73 Apr 73 Technology of commercial television- part 2: KL7AJ 54 Jan 88 hardware Television DX WA9RAQ 30 Aug 73 Test generator, sstv K4EEU 6 Jul 73 Vestigial sideband microtransmitter for WA6UAM 20 Feb 76 amateur television Vestigial sideband microtransmitter for Short circuit 94 May 77 amateur television transmitters and power amplifiers - general Title Author Page Issue ----- ------ ---- ----- 40-meter transmitter-receiver W6XM 43 Dec 82 5CX1500 screen protection (HN) VE3AIA 58 Mar 83 6-meter amplifier W2GN 72 Apr 83 6-meter amplifier Short circuit 97 Aug 83 A-M/fm converter for facsimile transmission, SM6FJB 12 Dec 81 an Adjusting SSB amplifiers AG6K 33 Sep 85 Amplitude modulation, a different approach WA5SNZ 50 Feb 70 Aural vco provides relative metering K1ZJH 97 Jan 87 Batteries, how to select for portable WA0AIK 40 Aug 73 equipment Blower maintenance (HN) W6NIF 71 Feb 71 Blower-to-chassis adapter (HN) K6JYO 73 Feb 71 Collector Matching Networks KZJ 34 Jan 89 Converting a-m power amplifiers to ssb WA4GNW 55 Sep 68 service CQer, automatic, for RTTY W4AYV 18 Nov 80 Design a no-tune amplifier with your W7DHD 8 Sep 87 personal computer Digital readout, universal WB8IFM 34 Dec 78 Digital vfo basics Earnshaw 18 Nov 78 Efficiency of linear power amplifiers, how W5JJ 64 Jul 73 to compare Eimac 5CX1500A power pentode, notes on K9XI 60 Aug 80 Electronic bias switching for linear W6VFR 50 Mar 75 amplifiers Fail-safe timer, transmitter (HN) K9HVW 72 Oct 74 Filter converter, an up/down W5DA 20 Dec 77 Filters, ssb (HN) K6KA 63 Nov 73 Frequency multipliers W6GXN 6 Aug 71 Frequency translation in ssb transmitters Belt 22 Sep 68 Grid-current measurement in grounded-grid W6SAI 64 Aug 68 amplifiers Grounded-grid amplifier parasitics AG6K 31 Apr 86 Grounded-grid amplifier parasitics Comment, NJ0G 9 Jul 86 Grounded-grid amplifier parasitics Comment, W2YW 6 Jul 86 Ham radio techniques: "white noise" revisited W6SAI 79 Oct 87 Ham radio techniques: "white noise" W6SAI 55 Jan 87 technology bites back Ham radio techniques: super cathode driven W6SAI 73 Nov 86 amplifier High-voltage fuses in linear amplifiers (HN) K9MM 76 Feb 78 Homebrew Neutralizing Capacitor N4LC 38 May 89 Intermittent voice operation of power tubes W6SAI 24 Jan 71 Key and vox clicks (HN) K6KA 74 Aug 72 Linear power amplifiers Belt 16 Apr 68 Linear power amplifiers (letter) KB5EY, W6SAI 6 Dec 79 Linear Tuning with a War Surplus Capacitor N2DCH 40 Jun 89 Lowpass filters for solid-state linear WA0JYK 38 Mar 74 amplifiers Lowpass filters for solid-state linear Short circuit 62 Dec 74 amplifiers Lowpass filters, elliptic, for transistor W3NQN 20 Jan 81 amplifiers Matching techniques, broadband, for WA7WHZ 30 Jan 77 transistor rf amplifiers MC1496, improved carrier suppression (HN) K1ZJH 78 Apr 85 MC1496, improved carrier suppression (HN) Short circuit 74 Jul 85 MMIC multiplier chains for the 902 MHz band N6JH 72 Feb 87 MMIC multiplier chains for the 902 MHz band Short circuit 64 May 87 Multiple tubes in parallel grounding grid W7CSD 60 Aug 71 (HN) National NCX-500 modification for 15 meters WA1KYO 87 Oct 77 (HN) Networks, transmitter matching W6FFC 6 Jan 73 Neutralizing tip (HN) ZE6JP 69 Dec 72 Parasitic oscillations in high-power W0KGI 54 Sep 70 transistor rf amplifiers Parasitic suppressor (HN) WA9JMY 80 Apr 70 Pi and pi-L networks W6SAI 36 Nov 68 Pi network design Anderson, 36 Mar 78 Leonard H. Pi network design Comments 6 Apr 79 Pi network design aid W6NIF 62 May 74 Pi network design aid Correction 58 Dec 74 (letter) Pi networks (letter) W6NIF 6 Oct 78 Pi networks, series tuned W2EGH 42 Oct 71 Pi-network design, high-frequency power W6FFC 6 Sep 72 amplifier Pi-network inductors (letter) W7IV 78 Dec 72 Pi-network rf choke (HN) W6KNE 98 Jun 78 Power attenuator, all-band 10-dB K1CCL 68 Apr 70 Power fets W3FQJ 34 Apr 71 Power tube open filament pins (HN) W9KNI 69 Apr 75 Practically speaking: noise, signals and K4IPV 77 Feb 88 amplifiers Practically Speaking: Parts for Antenna K4IPV 83 Jan 89 Tuners and Linears Plus a Correction Pre-emphasis for ssb transmitters OH2CD 38 Feb 72 QSK Modification for the Trio-Kenwood TL-922 AG6K 35 Mar 89 Amplifier Quartz crystals (letter) WB2EGV 12 Dec 79 Relay activator (HN) K6KA 62 Sep 71 Rf leakage from your transmitter, preventing K9MM 44 Jun 78 Rf power amplifiers, high-efficiency WB8LQK 8 Oct 74 Rf power transistors, how to use WA7KRE 8 Jan 70 RF switching, high power with pin diodes KN8Z 82 Jan 85 Screen clamp, solid-state W0LRW 44 Sep 68 Single-conversion transceivers, digital K6YHK 28 Mar 81 frequency display for Sstv reporting system WB6ZYE 78 Sep 76 Step-start circuit, high-voltage (HN) W6VFR 64 Sep 71 Swr alarm circuits W2EEY 73 Apr 70 Talking clock (letter) N9KV 75 Feb 80 Talking digital readout (letter) N5AF 6 May 80 Temperature alarms for high-power amplifiers W2EEY 48 Jul 70 Three-tube 4CX250B linear amplifier YU1AW 63 Apr 87 Transmitter power levels, some observations WA5SNZ 62 Apr 71 regarding Transmitter switching, solid-state W2EEY 44 Jun 68 Transmitter, remote keying (HN) WA3HDU 74 Oct 69 Transmitter-tuning unit for the blind W9NTP 60 Jun 71 True frequency digital readout for the HW-101 NU4F 8 Jan 87 True frequency digital readout for the HW-101 Short circuit 41 Aug 87 TV sweep tubes in linear service, full-blast W6SAI, W6UOV 9 Apr 68 operation of Two-Loop 10-Hz Step 40-70 MHz Synthesizer PY1LL & C Mathias 24 Jan 89 Vacuum tubes, using odd-ball types in linear W5JJ 58 Sep 72 amplifiers Vfo, digital readout WB8IFM 14 Jan 73 VMOS on 1750 meters K1RGO 71 Oct 83 XK2C AFSK generator, the W3HVK 58 Nov 80 transmitters and power amplifiers - high-frequency transmitters Title Author Page Issue ----- ------ ---- ----- 14-MHz vfo transmitter, solid-state W3QBO 6 Nov 73 15-meter sideband transceiver WA4ZXF 12 Mar 83 15-meter sideband transceiver Short circuit 80 Jul 83 15-meter sideband transceiver Short circuit 66 Jan 86 160-meters, 500-watt power amplifier W2BP 8 Aug 75 28-MHz transmitter, solid-state K2ZSQ 10 Jul 68 3-400Z, 3-500Z filament circuits, notes on K9WEH 66 Apr 76 3-500Z in amateur service, the W6SAI 56 Mar 68 40-meters, transistor rig for W6BLZ, K5GXR 44 Jul 68 7-MHz QRP CW transmitter WA4MTH 26 Dec 76 80/40-meter junkbox rig revisited (HN) W3RMD 70 Jan 90 Air pressure, measuring across transmitting W4PSJ 89 Jan 80 tubes (HN) ALC circuits, an analysis of K4JW 19 Aug 81 Amplifier, 3CX1200A7 10 to 80 meter K8RA 75 Aug 85 An NE602-based QRP Transceiver for 20-meter K1BQT 9 Jan 89 CW ART-13, Modifying for noiseless CW (HN) K5GKN 68 Aug 69 Better frequency stability for the Drake TR7 HB9ABO 21 Aug 87 Card File Station for 40 Meters, The W6XM 56 Sep 89 Weekender CAT control system for the Yaesu FT-757GX SM6CPI 26 Nov 87 CB to 10 fm transceiver conversion VE3FIT, VE3AQN 16 Feb 83 Compact 75-meter monoband transceiver K1BQT 13 Nov 85 Convert a $25 CB HT for 6 meters K1ZJH 79 Aug 87 CW transceiver for 40 and 80 meters W3NNL, K3OIO 14 Jul 69 CW transceiver for 40 and 80 meters, improved W3NNL 18 Jul 77 CW transceiver, low-power 20-meter W7ZOI 8 Nov 74 CW transmitter, half-watt K0VQY 69 Nov 69 Design an amplifier around the 3CX1200A7 W7DHD 33 Dec 87 Driver and final for 40 and 80 meters, solid- W3QBO 20 Feb 72 state Electronic bias switch for negatively-biased WA5KPG 27 Nov 76 power amplifiers Field-effect transistor transmitters K2BLA 30 Feb 71 Filters, low-pass for 10 and 15 meters W2EEY 42 Jan 72 Five-band Junkbox Transmitter W3RMD 42 Dec 89 Five-band transmitter, hf, solid-state I5TDJ 24 Apr 77 Frequency synthesizer, high frequency K2BLA 16 Oct 72 Grounded-grid 2 kW PEP amplifier, high W6SAI 6 Feb 69 frequency Ham notebook: curing FT-1012D key clicks N5RM 74 Feb 88 Ham radio techniques: 160-meter equipment W6SAI 77 Mar 87 Heath HW-101 transceiver, using with a WA1MKP 63 Oct 73 separate receiver (HN) High dynamic range mixing with the Si8901 KB7QJ 11 Mar 88 Improved stability and dial calibration for W3HVK 103 Nov 83 the Heathkit HW-8 (HN) Kilowatt mobile for DX K5DUT 43 Dec 80 Linear amplifier design: Part 1 W6SAI 12 Jun 79 Linear amplifier design: Part 2 W6SAI 34 Jul 79 Linear amplifier design: Part 3 W6SAI 58 Aug 79 Linear amplifier performance, improving W4PSJ 68 Oct 71 Linear amplifier, 100-watt W6WR 28 Dec 75 Linear amplifier, five-band W7IV 30 Mar 70 Linear amplifier, five-band conduction-cooled W9KIT 6 Jul 72 Linear amplifier, HF solid-state kilowatt, WA7SPR 67 Feb 85 mobile Linear amplifier, modular, for the high- K8RA 12 Jan 81 frequency Amateur bands Linear amplifier, modular, for the high- Comments K1THP 6 Mar 81 frequency Amateur bands Linear amplifiers, modifying for full break- K4XU 38 Apr 78 in operation Linear for 80-10 meters, high-power W6HHN 56 Apr 71 Linear for 80-10 meters, high-power Short circuit 96 Dec 71 Linear power amplifier, high-power solid- Chambers 6 Aug 74 state Linear, five-band hf W7DI 6 Mar 72 Linear, five-band kilowatt W4OQ 14 Jan 74 Linear, five-band kilowatt Improved 59 Dec 74 operation Linear-amplifier cost efficiency W8MFL 60 Jul 80 Linears, three bands with two (HN) W4NJF 70 Nov 69 Low-frequency transmitter, solid-state W4KAE 16 Nov 68 Lowpass filter, high-frequency W2OLU 24 Mar 75 Lowpass filter, high-frequency Short circuit 59 Jun 75 Lowpass filters, elliptic, for transistor W3NQN 20 Jan 81 amplifiers Modifying the Heath SB-200 amplifier for the W6UOV 32 Jan 71 new 8873 zero-bias triode Mosfet power amplifier, for 160 - 6 meters WA1WLW 12 Nov 78 Phase-locked loop, 28 MHz W1KNI 40 Jan 73 QRP fet transmitter, 80-meter W3FQJ 50 Aug 75 Remote control hf operation K5QY 32 Apr 83 Remote control hf operation Short circuit 97 Aug 83 Ssb exciter, 5-band K1UKX 10 Mar 68 Ssb transceiver using LM373 IC W5BAA 32 Nov 73 Ssb transceiver, 9-MHz, IC G3ZVC 34 Aug 74 Ssb transceiver, 9-MHz, IC Circuit change 62 Sep 75 (letter) Ssb transceiver, miniature 7-MHz W7BBX 16 Jul 74 Ssb transmitter and receiver, 40 meters VE3GSD 6 Mar 74 Ssb transmitter and receiver, 40 meters Short circuit 62 Dec 74 Ssb transmitter, phasing type WA0JYK 8 Jun 75 Tank circuit, inductively-tuned high- W6SAI 6 Jul 70 frequency Thumbwheel frequency selector for the Yaesu KA9SNF 33 Nov 87 FT-757GX Transceiver, 3.5-MHz ssb VE6ABX 6 Mar 73 Transceiver, high-frequency with digital DJ2LR 12 Mar 78 readout Transceiver, single-band ssb W1DTY 8 Jun 69 Transmitter, five-band, CW and ssb WN3WTG 34 Jan 77 Transmitter, low-power W6NIF 26 Dec 70 Transmitter, universal flea-power K2ZSQ 58 Apr 69 Transmitters, QRP W7OE 36 Dec 68 Transverter, high-level hf K4ERO 68 Jul 68 Transverter, low-power, high-frequency WA0RBR 12 Dec 78 TS-440 interface for keying linears with W6VVTU 98 Nov 88 high voltage biasing (HN) Vacuum tube amplifier, design a toroidal W6YUY 29 Aug 85 tank circuit for Wideband linear amplifier, 4 watt VE5FP 42 Jan 76 transmitters and power amplifiers - vhf and uhf transmitters Title Author Page Issue ----- ------ ---- ----- 10-GHz transceiver for amateur microwave DJ7OO 10 Aug 78 communications 1296-MHz frequency tripler K4SUM, W4API 40 Sep 69 1296-MHz power amplifier W2COH, W2CCY, 43 Mar 70 W2OJ, W1MU 1296-MHz transverter K6ZMW 10 Jul 77 144-and 432- stripling amplifieritripler K2RIW 6 Feb 70 144-MHz fm transmitter W9SEK 6 Apr 72 144-MHz fm transmitter, solid-state W6AJF 14 Jul 71 144-MHz fm transmitter, Sonobaby WA0UZO 8 Oct 71 144-MHz fm transmitter, Sonobaby Short circuit 96 Dec 71 144-MHz fm transmitter, Sonobaby Crystal deck for 26 Oct 72 144-MHz low-drive kilowatt linear W6HHN 26 Jul 70 144-MHz low-power solid-state transmitter K0VQY 52 Mar 70 144-MHz phase-modulated transmitter W6AJF 18 Feb 70 144-MHz power amplifier, 10-watt solid-state W1DTY 67 Jan 74 144-MHz power amplifier, high-performance W6UOV 22 Aug 71 144-MHz power amplifiers, solid state W4CGC 6 Apr 73 144-MHz transceiver, a-m K1AOB 55 Dec 71 144-MHz transmitting converter, solid-state W6NBI 6 Feb 74 ssb 144-MHz transmitting converter, solid-state Short circuit 62 Dec 74 ssb 144-MHz two-kilowatt linear W6OUV, W6ZO, K6DC 26 Apr 70 220-MHz exciter WB6DJV 50 Nov 71 220-MHz kilowatt linear W6PO 12 Jun 80 220-MHz power amplifier W6UOV 44 Dec 71 220-MHz rf power amplifier, vhf fm K7JUE 6 Sep 73 220-MHz, rf power amplifier for WB6DJV 44 Jan 71 2304-MHz power amplifier WA9HUV 8 Feb 75 30-MHz preamplifier, low-noise W1HR 38 Oct 78 432-MHz 100-watt solid-state power amplifier WA7CNP 36 Sep 75 432-MHz amplifier, 2-kW W6DAI, W6NLZ 6 Sep 68 432-MHz exciter, solid-state W1OOP 38 Oct 69 432-MHz rf power amplifier K6JC 40 Apr 70 432-MHz solid-state linear amplifier WB6QXF 30 Aug 75 432-MHz ssb converter K6JC 48 Jan 70 432-MHz ssb converter Short circuit 79 Jun 70 50-MHz kilowatt, inductively tuned K1DPP 8 Sep 75 50-MHz linear amplifier K1RAK 38 Nov 71 50-MHz linear amplifier, 2-kW W6UOV 16 Feb 71 50-MHz linear, inductively tuned W6SAI 6 Jul 70 50-MHz transmitter, solid-state WB2EGZ 6 Oct 68 50-MHz transverter K1RAK 12 Mar 71 50/144-MHz multimode transmitter K2ISP 28 Sep 70 Converter, dc-dc, increases Gunnplexer W1XZ 70 Apr 80 frequency swing (HN) Converting the Swan 120 to two meters K6RIL 8 May 68 Fm repeater transmitter, improving W6GDO 24 Oct 69 Linear for 1296 MHz, high-power WB6IOM 8 Aug 68 Linear for 2 meters W4KAE 47 Jan 69 Phase-locked loop, 50 MHz W1KNI 40 Jan 73 Synthesized 2-meter mobile stations, W9CGI 20 Jun 80 automation for Transistors for vhf transmitters (HN) W1OOP 74 Sep 69 Transmitter, flea power K2ZSQ 80 Dec 68 Transmitter, flea power K2ZSQ 58 Apr 69 Transmitting mixers for 6 and 2 meters K2ISP 8 Apr 69 Transverter for 6 meters WA9IGU 44 Jul 69 Tunnel diode phone rig, 6-meter (HN) K2ZSQ 74 Jul 68 Vhf linear, 2kW, design data for W6UOV 6 Mar 69 transmitters and power amplifiers - test and troubleshooting Title Author Page Issue ----- ------ ---- ----- Aligning vhf transmitters Allen 58 Sep 68 Six-meter transverter K8DOC, K8TVP 44 Dec 68 Ssb transmitter alignment Allen 62 Oct 69 Tuning up ssb transmitters Allen 62 Nov 69 troubleshooting Title Author Page Issue ----- ------ ---- ----- Analyzing wrong dc voitages Allen 54 Feb 69 Audio distortion, curing in speech amplifiers Allen 42 Aug 70 Basic troubleshooting James 54 Jan 76 Dc-dc converters, curing trouble in Allen 56 Jun 70 GLA-1000 amplifier, stop blowing finals G4CFY, G3ROG 59 Aug 85 Grounded-grid amplifier parasitics AG6K 31 Apr 86 Grounded-grid amplifier parasitics Comment, NJ0G 9 Jul 86 Grounded-grid amplifier parasitics Comment, W2YW 6 Jul 86 I-f transformers, problems and cures - K4IPV 56 Mar 79 Weekender Logic circuits, troubleshooting W8GRG 56 Feb 77 Mobile power supplies, troubleshooting Allen 56 Jun 70 Ohmmeter troubleshooting Allen 52 Jan 69 Oscillator troubleshooting (repair bench) K4IPV 54 Mar 77 Oscillators, repairing Allen 69 Mar 70 Oscilloscope, putting to work Allen 64 Sep 69 Oscilloscope, troubleshooting amateur gear Allen 52 Aug 69 with Power supply, troubleshooting K4IPV 78 Sep 77 Practically speaking K4IPV 59 Jan 86 Practically speaking K4IPV 35 Feb 86 Practically speaking: coax velocity factor K4IPV 78 Nov 86 Practically speaking: using the multimeter K4IPV 43 Jul 86 Practically speaking: using the right K4IPV 95 Jun 86 multimeter Receiver alignment techniques, vhf fm K4IPV 14 Aug 75 Receivers, troubleshooting the dead K4IPV 56 Jun 76 Resistance measurement, troubleshooting by James 58 Apr 76 Rf and i-f amplifiers, troubleshooting Allen 60 Sep 70 Speech amplifiers, curing distortion Allen 42 Aug 70 Ssb transmitter alignment Allen 62 Oct 69 Sweep generator, how to use Allen 60 Apr 70 Transistor circuits, troubleshooting K4IPV 60 Sep 76 Transistor testing Allen 62 Jul 70 Tuning up ssb transmitters Allen 62 Nov 69 TVI problem, solving a difficult (HN) W2YW 152 Sep 85 Voltage troubleshooting James 64 Feb 76 vhf and microwave - general Title Author Page Issue ----- ------ ---- ----- 10-GHz cross-guide coupler WB2ZKW 66 Oct 79 10-GHz Gunnplexer transceivers, construction Feature 26 Jan 79 and practice 10-GHz Gunnplexer transceivers, construction Comments, W6OAL 6 Sep 79 and practice 10-GHz oscillator, ultra stable K8UR 57 Jun 83 1296-MHz double-stub tuner K6LK 70 Dec 78 1296-MHz microstrip filter, improved N6TX 60 Aug 78 grounding for 1296-MHz microstripline bandpass filters WA6UAM 46 Dec 75 144-MHz fm frequency meter W4JAZ 40 Jan 71 144-MHz fm frequency meter Short circuit 72 Apr 71 144-MHz frequency synthesizer WB4FPK 34 Jul 73 144-MHz frequency synthesizer, CMOS Short circuit 81 Apr 80 144-MHz frequency-synthesizer, one-crystal W0KMV 30 Sep 73 2.3GHz prescaler N6JH 21 Jan 87 220-MHz frequency synthesizer W6GXN 8 Dec 74 2304-MHz stripline bandpass filter WA4WDL, WB4LJM 50 Apr 77 40-GHz record K7PMY 70 Dec 68 40-meter transmitter-receiver W6XM 43 Dec 82 432-MHz ssb, practical approach to WA2FSQ 6 Jun 71 440-MHz bandpass filter WA8YBT 62 Nov 79 50-MHz bandpass filter W4EKO 70 Aug 76 50-MHz frequency synthesizer W1KNI 26 Mar 74 50-MHz RF Bridge G8CJM 53 Jul 89 A-m modulation monitor (HN) K7UNL 67 Jul 71 AF transmission cable, microwave applications K3HW 106 May 85 Amateur vhf fm operation W6AYZ 36 Jun 68 APX-6 transponder, notes on W6OSA 32 Apr 68 Artificial radio aurora, vhf scattering WB6KAP 18 Nov 74 characteristics ATV power amplifier, fast-scan WB0ZJP 67 Mar 85 Audio to microwave amplifier, build your own Gruchalla, 12 Mar 84 Michael Band change from six to two meters, quick K0YQY 64 Feb 70 Bandpass filter design, interdigital, N6JH, Monemzadeh 12 Jan 85 computer-aided Bandpass filter design, interdigital, Short circuit 117 Jun 85 computer-aided Bandpass filters, 25 to 2500 MHz K6RIL 46 Sep 69 Bandpass filters, single-pole W6HPH 51 Sep 69 Battery-voltage monitor for HTs (weekender) K2MWU 78 Sep 82 Bicycle mobile NH6N 38 Sep 88 Bypassing, rf, at vhf WB6BHI 50 Jan 72 Cavity filter, 144-MHz W1SNN 22 Dec 73 Cavity filter, 144-MHz Short circuit 64 Mar 74 Cavity filters, surplus, how to modify for W4FXE 42 Feb 80 144 MHz Coaxial filter, vhf W6SAI 36 Aug 71 Coaxial-line resonators (HN) WA7KRE 82 Apr 70 Coil-winding data, practical vhf and uhf K3SVC 6 Apr 71 Converting mobile microphones for handheld KD8KZ and WB3JCC 79 Mar 86 VHF transceivers Crystal mount, untuned W1DTY 68 Jun 68 Designing a microwave amplifier Domanski, S. 30 Sep 87 Diplexer mods (HN) K5PFE 89 Apr 83 Dual wattmeter, 50-500 MHz WB4EHS 67 Jul 85 Duplexer, six cavity, home-brewed K9EYY 12 Feb 85 Earth-moon-earth (ham radio techniques) W6SAI 40 Feb 81 Effective radiated power (HN) VE7CB 72 May 73 Efficient matching VE7BS 83 Sep 83 EI2W six-meter report (letter) EI2W 12 Jul 80 Elevation indicator, inexpensive W5JTL 67 Jun 85 Elmer's notebook: 1200 MHz band W1SL 113 Dec 87 Elmer's notebook: 220 MHz W1SL 91 Aug 87 EME link calculator program KE6ZE 70 Feb 86 F-237/GRC surplus cavity filter, conversion W4FXE 22 Dec 80 versatility using the Frequency multipliers W6GXN 6 Aug 71 Frequency multipliers, transistor W6AJF 49 Jun 70 Frequency scaler, 500-MHz W6URH 32 Jun 75 Frequency scalers, 1200-MHz WB9KEY 38 Feb 75 Frequency synchronization for scatter-mode K2OVS 26 Sep 71 propagation Frequency synthesizer (letter) WA3AXS 12 Jul 80 Frequency synthesizer, 220 MHz W6GXN 8 Dec 74 G.O.E.S. reception: a simple approach WA4WDL 46 Jan 84 GaAs field-effect transistors, introduction WA2ZZF 74 Jan 78 Get on 6 meters the inexpensive way KB1KJ 91 Mar 85 Gridded tubes, vhf/uhf effects in W6UOV 8 Jan 69 Gunn oscillator design for the 10-GHz band WB2ZKW 6 Sep 80 Handheld transceiver mount (a 2-way ashtray KB2XM 64 Jul 81 for your car) (weekender) Harmonic generator (HN) W5GDQ 76 Oct 70 Helical antenna matching Belliveau, John 73 May 83 Homebrew Diplexer (HN) G8MWR 30 Sep 89 Impedance bridge (HN) W6KZK 67 Feb 70 Improving vhf/uhf receivers W1JAA 44 Mar 76 Indicator, sensitive rf WB9DNI 38 Apr 73 Instant balun (letter) W8MQW 6 Aug 81 K9LHA 2-meter synthesizer, extending the K9LHA 52 Dec 81 range of (HN) Klystron cooler, waveguide (HN) WA4WDL 74 Oct 74 L-band ground wave propagation program WA9GFR and 103 Jan 86 Joseph R. Hennel L-band local oscillators N6TX 40 Dec 79 Local oscillators, high stability for WB3JZO 29 Nov 85 microwave receivers and other applications Low Cost Battery Pack for Your Kenwood TH- KE6WF 40 Nov 89 25AT Handheld Lunar-path nomograph WA6NCT 28 Oct 70 Measuring noise figure K2BLA 26 Jan 84 Micros and VHF beacons transmit messages K9EI 51 Jul 85 automatically Microstrip impedance program K8UR 84 Dec 84 Microstrip impedance, simple formula for W1HR 72 Dec 77 Microstrip transmission line W1HR 28 Jan 78 Microwave bibliography W6HDO 68 Jan 78 Microwave communications, amateur standards K6HIJ 54 Sep 69 for Microwave frequency doubler WA4WDL 69 Mar 76 Microwave hybrids and couplers for amateur W2CTK 57 Jul 70 use Microwave hybrids and couplers for amateur Short circuit 72 Dec 70 use Microwave marker generator, 3cm band (HN) WA4WDL 69 Jun 76 Microwave network for multimode K4TWJ 36 Aug 82 communications Microwave path evaluation N7DH 40 Jan 78 Microwave rf generators, solid-state W1HR 10 Apr 77 Microwave solid-state amplifier design WA6UAM 40 Oct 76 Microwave solid-state amplifier design Comment, VK3TK, 98 Sep 77 WA6UAM Microwave systems, first building blocks for WA2GFP 52 Dec 80 Microwave-frequency converter for vhf KA9BYI 40 Jul 80 counters Microwaves, getting started in Roubal 53 Jun 72 Microwaves, introduction to W1CBY 20 Jan 72 MMIC multiplier chains for the 902 MHz band N6JH 72 Feb 87 MMIC multiplier chains for the 902 MHz band Short circuit 64 May 87 Modular transmit and receive converters for N6JH 17 Mar 87 902 MHz Monitor, tone alert W4KRT 24 Aug 80 Monolithic RF amplifiers N6JH 22 Mar 86 Moon coordinates, determining basic W2WD 38 Jan 85 Moon-tracking by computer K6WX 38 Mar 84 Moonbounce to Australia W1DTY 85 Apr 68 More about moonbounce (ham radio techniques) W6SAI 34 Mar 81 Multipurpose uhf oscillator, simplifying the WA9HYV 28 Sep 81 Noise figure measurements, vhf WB6NMT 36 Jun 72 Noise figure measurements, vhf noise K2ZSQ 79 Aug 68 generators, using (HN) Noise figure, meaning of K6MIO 26 Mar 69 Novice enhancement and the 220 MHz band, W9JUV 4 Apr 87 Reflections: Outstanding 144-MHz EME achievement K8BZW 79 Apr 90 Phase-locked loop, tunable 50 MHz W1KNI 40 Jan 73 Plasma-diode experiments Stockman, Harry 62 Feb 80 Polaplexer design K6MBL 40 Mar 77 Power dividers and hybrids W1DAX 30 Aug 72 Power dividers, extended/expanded W5JTL 73 Oct 84 Power FETS: trend for VHF amplifiers W7PUA and 12 Jan 84 Peters, D. Power supply, amplifier WA2GFP 32 Sep 83 Practically speaking: parametric amplifiers K4IPV 65 Mar 88 Preamp at work, Quiet! N6TX 14 Nov 84 Proportional temperature control for crystal VE5FP 44 Jan 70 ovens Radio observatory, vhf Ham 44 Jul 74 Radio telescope antenna requirement Landecker, Tom 44 Mar 83 Reflex klystrons, pogo stick for (HN) W6BPK 71 Jul 73 Remote base/simplex phone patch controller AA4NX & KK4LA 54 Aug 88 Repeater security WA5FRF 52 Feb 81 Rf power-detecting devices K6JYO 28 Jun 70 Satellite communications K1TMA 52 Nov 72 Satellite communications Added notes 73 Apr 73 (letter) Satellite signal polarization KH6IJ 6 Dec 72 Silverplating, safe, sensible K9EYY 29 Feb 85 Simple VHF/UHF multiple quarter-wave filters WA3EWT 37 Sep 87 Solar cycle 20, vhfer's view of WA5IYX 46 Dec 74 Solid-state Switching The Midland 13-509, VE2HOT 17 Jun 89 The Weekender Spectrum analyzer microwave N6TX 34 Jul 78 Spectrum analyzer, microwave WA6UAM 54 Aug 77 Sporadic E and 50-MHz transatlantic G3NAQ 10 Jul 88 propagation during 1987 Super beep circuit for repeaters KP4AQI 48 Jul 81 Synthesized time identifier for your repeater WA4GUA 42 Nov 82 Tank circuits, design of vhf K7UNL 56 Nov 70 The Guerri report: fiber optics Comment, WD9EIA 8 Feb 83 The Guerri report: fiber optics Comments, K2MWU 8 Feb 83 The Guerri report: fiber optics W6MGI 141 May 86 The Guerri report: mm waves, part1 W6MGI 109 Feb 86 The Guerri report: mm waves, part2 W6MGI 117 Mar 86 The Guerri report: signal processing W6MGI 156 Dec 84 Tone decoder, the ultimate WD9EIA, WB9HGZ 32 Sep 82 Touchtone auto-dialer, portable K2MWU 12 Aug 82 Trade off power for antenna gain at VHF? WA9GFR, Hennel 32 Jul 85 Trade off power for antenna gain at VHF? Comment, WA9GFR 9 Apr 86 Two-meter autopatches, tone-encoder for WB0VSZ 51 Jun 80 UHF antenna tower, low-cost KA6GVY 30 Oct 84 Uhf dummy load, 150-watt WB6QXF 30 Sep 76 Uhf hardware (HN) W6CMQ 76 Oct 70 Varactor tuning tips (HN) N3GN 69 Dec 80 Vfo, high-stability vhf OH2CD 27 Jan 72 VHF amplifiers, carrier-operated relay WB3JCC, KD8KZ 45 Apr 85 Vhf beacons K6EDX 52 Oct 69 Vhf beacons W3FQJ 66 Dec 71 Vhf circuits, eliminating parallel currents G3IPV 91 May 77 (HN) VHF meteor scatter communications AI7J 69 Feb 84 VHF noise bridge OE2APM/AA3K 10 Jul 86 VHF signal generation, harmonic mixer K1ZJH 40 Mar 85 VHF signal generation, harmonic mixer Short circuit 121 May 85 VHF techniques W6NBI 62 Jul 80 VHF transceivers, regulated power supply for WA8RXU 58 Sep 80 VHF/UHF world W1JR 45 Sep 84 VHF/UHF world W1JR 55 Oct 84 VHF/UHF world W1JR 54 Nov 85 VHF/UHF world W1JR 85 Dec 85 VHF/UHF world: 33 cm - our newest band W1JR 83 Apr 86 VHF/UHF world: 33 cm - our newest band Short circuit 9 Aug 86 (p. 87, July 86) VHF/UHF world: 33 cm update W1JR 74 Apr 87 VHF/UHF world: 33 cm update Short circuit 81 Sep 87 VHF/UHF world: designing and building loop W1JR 56 Sep 85 Yagis VHF/UHF World: DX Records on 50 MHz and Above W1JR 48 Jan 89 VHF/UHF World: DX Records on 50 MHz and W1JR 42 Feb 89 Above- pt 2 VHF/UHF world: high power amplifiers: part1 W1JR 97 Jan 85 VHF/UHF world: high power amplifiers: part2 W1JR 38 Feb 85 VHF/UHF world: IMD and splatter W1JR 71 Oct 88 VHF/UHF world: impedance matching techniques W1JR 27 Oct 87 VHF/UHF world: improving meteor scatter W1JR 82 Jun 84 communications VHF/UHF world: keeping VHF/UHFers up-to-date W1JR 126 Mar 85 VHF/UHF world: loose ends W1JR 82 Feb 88 VHF/UHF world: low-noise GaAs FET technology W1JR 99 Dec 84 VHF/UHF world: meteor scatter communications W1JR 68 Jun 86 VHF/UHF world: meteor scatter communications Short circuit 87 Jul 86 VHF/UHF world: microwave and millimeter-wave W1JR 63 Jan 87 update VHF/UHF world: microwave bands W1JR 44 Jan 86 VHF/UHF world: microwave portable operation W1JR 75 Jun 87 VHF/UHF world: microwave portable operation Short circuit 81 Sep 87 VHF/UHF world: minimum requirements for 2- W1JR 39 Aug 87 meter EME - part1 VHF/UHF world: minimum requirements for 2- Comments, W7WRO 9 Dec 87 meter EME - part1 VHF/UHF world: minimum requirements for 2- W1JR 65 Sep 87 meter EME - part2 VHF/UHF world: operating a VHF/UHF microwave W1JR 38 Jul 87 station VHF/UHF world: operating a VHF/UHF microwave Short circuit 81 Sep 87 station VHF/UHF world: operating a VHF/UHF microwave Short circuit 97 Oct 87 station VHF/UHF world: power splitters and summers W1JR 80 May 88 VHF/UHF world: propagation update W1JR 86 Jul 85 VHF/UHF world: protecting equipment W1JR 83 Jun 85 VHF/UHF world: rf connectors, part1 W1JR 77 Sep 86 VHF/UHF world: rf connectors, part2 W1JR 59 Oct 86 VHF/UHF world: the VHF/UHF challenge W1JR 42 Jan 84 VHF/UHF world: the VHF/UHF primer, an W1JR 112 Aug 84 introduction to filters VHF/UHF world: the VHF/UHF primer, an W1JR 14 Jul 84 introduction to propagation VHF/UHF world: transmission lines W1JR 83 Oct 85 VHF/UHF world: transmission lines Comment, W9ICZ 9 Apr 86 VHF/UHF world: uW and mm-wave propagation, W1JR 69 Aug 86 part2 Voltage-tuned UHF oscillator, multipurpose WA9HUV 12 Dec 80 Weak-signal communications W4LTU 26 Mar 78 Weather radar, 10-GHz K4TWJ 61 Sep 83 Wireless 220-MHz to 2-meter converter W3RW 36 Jan 82 (weekender) X-band calibrator WA6EJO 44 Apr 81 X-band mixer, low noise N5AX 22 Jan 83 vhf and microwave - antennas Title Author Page Issue ----- ------ ---- ----- 10 GHz dielectric antenna (HN) WA4WDL 80 May 75 10 GHz, broadband antenna WA4WDL, WB4LJM 40 May 77 10 GHz, broadband antenna Short circuit 94 Feb 79 1296-MHZ antenna, high-gain W3AED 74 May 78 1296-MHz Yagi W2CQH 24 May 72 1296-MHz Yagi array W3AED 40 May 75 144-MHz antenna switch, solid-state K2ZSQ 48 May 69 144-MHz antenna, 5/8 wave vertical K6KLO 40 Jul 74 144-MHz antenna, 5/8-wave vertical, build WB4WSU 67 Jun 74 from CB mobile whips 144-MHz antennas, simple WA3NFW 30 May 73 144-MHz collinear antenna W6RJO 12 May 72 144-MHz collinear uses PVC pipe mast (HN) K8LLZ 66 May 76 144-MHz four-element collinear array WB6KGF 6 May 71 144-MHz ground plane antenna, 0.7 wavelength W3WZA 40 Mar 69 144-MHz moonbounce antenna K6HCP 52 May 70 144-MHz whip, 5/8-wave (HN) VE3DDD 70 Apr 73 2-meter beam, portable KB5QJ 113 Oct 85 432- and 1296-MHz quad-yagi arrays W3AED 20 May 73 432- and 1296-MHz quad-yagi arrays Short circuit 58 Dec 73 432-MHz corner reflector antenna WA2FSQ 24 Nov 71 432-MHz high-gain Yagi K6HCP 46 Jan 76 432-MHz high-gain Yagi Comments, W0PW 63 May 76 432-MHz OSCAR antenna (HN) W1JAA 58 Jul 75 440-MHz collinear antenna, four-element WA6HTP 38 May 73 50-MHz antenna coupler K1RAK 44 Jul 71 50-MHz collinear beam K4ERO 59 Nov 69 50-MHz cubical quad, economy W6DOR 50 Apr 69 50-MHz mobile antenna (HN) W4PSJ 77 Oct 70 6-meter kilowatt amplifier KX0O 50 Jul 88 Antenna insulators, PTFE VHF W5JTL 98 Oct 85 Antenna-performance measurements using W5CQ/W4RXY 75 May 79 celestial sources Cheap and dirty 6-meter beam W5UOJ 56 Jul 88 Circularly-polarized ground-plane antenna K4GSX 28 Dec 74 for satellite communications Colagi antenna, The VE3BFM 61 May 86 Computer-aided design of long VHF Yagi VK4ZF 28 May 86 antennas Convert an inexpensive CB mag-mount antenna K7DBA 52 Oct 86 into a superb 2-meter whip Cylindrical feedhorns revisited WA9HUV 20 Feb 86 Cylindrical feedhorns, second-generation WA9HUV 31 May 82 Direction-finding tool, the fox box K1ZJH 25 Oct 85 Feed horn, cylindrical, for parabolic WA9HUV 16 May 76 reflectors Feeding and matching techniques for vhfluhf W1JAA 54 May 76 antennas Fresnel-zone plate for 10.4 GHz WB6YVK 44 May 82 Fresnel-zone plate for 10.4 GHz Comments, KB9O, 8 Nov 82 WB6YVK Ground plane, portable vhf (HN) K9DHD 71 May 73 Ham notebook: a 2-meter halo antenna NR5A 63 May 87 High-performance Yagis for 432 MHZ K1FO 8 Jul 87 High-performance Yagis for 432 MHZ Comments: KLM 6 Sep 87 balun, Scott, W. High-performance Yagis for 432 MHZ Short circuit 97 Oct 87 Inexpensive five-eighth wave groundplane (HN) W7CSD 84 Mar 81 Log-periodic yagi beam antenna K6RIL, W6SAI 8 Jul 69 Log-periodic yagi beam antenna Correction 68 Feb 70 Long 2-meter collinears - a simple way to WB3AYW 95 May 86 achieve gain (HN) Matching 432-MHz helical antennas W8NWU 44 Mar 83 Matching techniques for vhf/uhf antennas W1JAA 50 Jul 76 Microstrip swr bridge, vhf and uhf W4CGC 22 Dec 72 Microwave antenna, low-cost K6HIJ 52 Nov 69 Open-wire line for 2-meters N4UH 94 Jan 87 Oscar az-el antenna system WA1NXP 70 May 78 Parabolic reflector antennas VK3ATN 12 May 74 Parabolic reflector element spacing WA9HUV 28 May 75 Parabolic reflector gain W2TQK 50 Jul 75 Parabolic reflector, 16-foot homebrew WB6IOM 8 Aug 69 Parabolic reflectors, finding focal length WA4WDL 57 Mar 74 of (HN) Re-entrant cavity antenna for the vhf bands W4FXE 12 May 81 Six-meter J-pole antenna K4SDY 48 Aug 68 Swr meter W6VSV 6 Oct 70 Transmission lines, uhf WA2VTR 36 May 71 True north, how to determine for antenna K4DE 38 Oct 80 orientation True north, how to determine for antenna Comments, N6QX, 7 Mar 81 orientation K4DE Two-meter antenna, simple (HN) W6BLZ 78 Aug 68 Two-meter mobile antennas W6BLZ 76 May 68 Using a 2-meter quarter-wave whip on 450 MHz K1ZJH 92 May 81 (HN) Vhf antenna switching without relays (HN) K2ZSQ 77 Sep 68 VHF Yagi CAD on the C-64 W4PFZ 70 Sep 86 VHF/UHF world W1JR 85 Dec 85 VHF/UHF world: optimized 2- and 6-meter Yagis W1JR 92 May 87 VHF/UHF world: optimized 2- and 6-meter Yagis Short circuit 26 Jun 87 VHF/UHF world: optimized 2- and 6-meter Yagis Short circuit 49 Jul 87 VHF/UHF world: optimized 2- and 6-meter Yagis Short circuit 41 Aug 87 VHF/UHF world: optimized 2- and 6-meter Yagis Short circuit 81 Sep 87 VHF/UHF world: reflector antennas, part1 W1JR 51 Feb 86 VHF/UHF world: reflector antennas, part1 Short circuit 45 Apr 86 VHF/UHF world: reflector antennas, part2 W1JR 68 Mar 86 VHF/UHF world: stacking antennas, part1 W1JR 129 Apr 85 VHF/UHF world: stacking antennas, part2 W1JR 95 May 85 VHF/UHF world: VHF/UHF antennas and antenna W1JR 46 Feb 84 systems VHF/UHF world: VHF/UHF antennas and antenna Short circuit 54 Jan 86 systems VHF/UHF world: Yagi facts and fallacies W1JR 103 May 86 Weathering the elements at 10.4 GHz WB6YVK 74 Aug 82 Yagi trigon reflector, Optimizing WB3BGU 84 Jan 86 Yagi, a high-gain 70-cm W1JR 75 Dec 86 Yagi, a high-gain 70-cm Short circuit 68 Feb 87 vhf and microwave - receivers and converters Title Author Page Issue ----- ------ ---- ----- 10 GHz hybrid-tee mixer G3NRT 34 Oct 77 10-60MHz preamp, low-noise, low-cost WA2GFP 65 May 81 1296 MHz, double-balanced mixers for WA6UAM 8 Jul 75 1296-MHz converter, solid state VK4ZT 6 Nov 70 1296-MHz local-oscillator chain WA2ZZF 42 Oct 78 1296-MHz low noise amplifier (Weekender) WA9HUV 60 Nov 88 1296-MHz noise generator W3BSV 46 Aug 73 1296-MHz preamplifier WA6UAM 42 Oct 75 1296-MHz preamplifier, low-noise transistor WA2VTR 50 Jun 71 1296-MHz preamplifier, low-noise transistor Added note 65 Jan 72 (letter) 1296-MHz preamplifiers, microstripline WA6UAM 12 Apr 75 1296-MHz preamplifiers, microstripline Comments, W2DU 68 Jan 76 1296-MHz rat-race balanced mixer WA6UAM 33 Jul 77 1296-MHz ssb transceiver WA6UAM 8 Sep 74 144-432 MHz GaAs fet preamp JH1BRY 38 Nov 79 144-MHz converter (HN) K0VQY 71 Aug 70 144-MHz converter, high dynamic range DJ2LR 55 Jul 77 144-MHz converters, choosing fats (HN) K6JYO 70 Aug 69 144-MHz deluxe mosfet converter WB2EGZ 41 Feb 71 144-MHz deluxe mosfet converter Letter, W0LER 71 Oct 71 144-MHz deluxe mosfet converter Short circuit 96 Dec 71 144-MHz etched-inductance bandpass filters W5KHT 6 Feb 71 and filter-preamplifiers 144-MHz fm receiver W9SEK 22 Sep 70 144-MHz fm receiver WA2GBF 42 Feb 72 144-MHz fm receiver Added notes 73 Jul 72 144-MHz fm receiver WA2GCF 6 Nov 72 144-MHz preamp, low-noise W1DTY 40 Apr 76 144-MHz preamp, super (HN) K6HCP 72 Oct 69 144-MHz preamplifier, improved WA2GCF 25 Mar 72 144-MHz preamplifier, low noise W8BBB 36 Jun 74 144-MHz transverter using power fets WB0BPI 10 Sep 76 2-Meter Converter with Q Multiplier WA9HUV 33 Nov 89 2-meter monitor WA3ENK 64 Jul 88 2-meter synthesizer, frequency modulator for K9LHA 68 Apr 81 2-meter transverter W6HPH 24 Jan 82 2-meter weather converter WA3EEC 87 Dec 83 220-MHz 9600-Baud Data Radio System for W2DUC 67 Feb 89 Packet 220-MHz mosfet converter WB2EGZ 28 Jan 69 220-MHz mosfet converter Short circuit 76 Jul 69 220-mhz receiving adapter (Weekender) K1ZJH 20 Apr 90 2304-MHz balanced mixer WA2ZZF 58 Oct 75 2304-MHz converter, solid-state K2JNG, WA2LTM, 16 Mar 72 WA2VTR 2304-MHz preamplifier, low-noise WA2GFP 12 Feb 83 2304-MHz preamplifier, solid-state WA2VTR 20 Aug 72 2304-MHz preamplifiers, narrow-band solid- WA9HUV 6 Jul 74 state 28-30 MHz low-noise preamp W1JAA 48 Oct 75 30-MHz preamplifier, low-noise W1HR 38 Oct 78 30-MHz preamplifier, low-noise Short circuit 94 Feb 79 3456-MHz Linear Transverter WA3JUF 68 Jan 89 432 MHz preamplifier and converter WA2GCF 40 Jul 75 432- and 1296-MHz signalsource K6RIL 20 Sep 68 432-MHz converter N9KD 74 Apr 79 432-MHz converter, low-noise K6JC 34 Oct 70 432-MHz fet converter, low-noise WA6SXC 18 May 68 432-MHz fet preamp (HN) W1DTY 66 Aug 69 432-MHz GaAs preamp JH1BRY 22 Apr 78 432-MHz preamplifier, low-noise WB5LUA 26 Oct 78 432-MHz preamplifier, ultra low-noise W1JAA 8 Mar 75 435-MHz Low-noise GaAsFET Preamplifier WA2FTK and K1JUL 9 Jul 89 50-MHz deluxe mosfet converter WB2EGZ 41 Feb 71 50-MHz etched-inductance bandpass filters W5KHT 6 Feb 71 and filter-preamplifiers 50-MHz preamplifier, Improved WA2GCF 46 Jan 73 Add fm to your receiver (weekender) K3NXU 74 Mar 81 Audio filter, tunable, for weak-signal K6HCP 28 Nov 75 communications Calculating preamplifier gain from noise N6TX 30 Nov 77 figure measurements Cavity filters, surplus, how to modify for W4FXE 42 Feb 80 144 MHz Cooled preamplifier for vhf-uhf reception WA0RDX 36 Jul 72 Crystal-controlled vhf receivers, tuning aid WA1FHB 69 Jul 80 for (HN) Double-balanced mixers, circuit packaging for WA6UAM 41 Sep 77 Easy Monitor Receiver for 2 Meters WASSNZ 28 Apr 89 Fet converters for 50, 144, 220 and 432 MHz W6AJF 20 Mar 68 Fm transceiver, remote synthesized for 2 WB4UPC 28 Jan 80 meters GaAs FET performance and preamplifier K8UR 38 Mar 83 application GaAs FET performance and preamplifier Comments, KC0W 12 Jul 83 application High Performance 2-Meter Transverter W84EHS 68 Jul 89 Kenscan 74 WB7QYB 50 Jan 81 Kenscan 74 Short circuit 89 Jan 82 lnterdigital preamplifier and comb-line W6KHT 6 Aug 70 bandpass filter for vhf and uhf Local oscillators, high stability for WB3JZO 29 Nov 85 microwave receivers and other applications Microwave amplifier design, solid state WA6UAM 40 Oct 76 Microwave mixer, new WA0RDX 84 Oct 78 Modification of K9LHA 2-meter synthesizer K9LHA 93 May 81 for 144-148 MHz coverage (HN) Noise figure, sensitivity and dynamic range W1DTY 8 Oct 75 Noise figure, vhf, estimating WA9HUV 42 Jun 75 Overload problems with vhf converters, W1OOP 53 Jan 73 solving Preamplifier design, UHF, computer-aided KB0O 28 Oct 82 Preamplifiers, vhf low-noise WA2GFP 50 Dec 79 Receiver scanner, vhf K2LZG 22 Feb 73 Receiver, superregenerative, for vhf WA5SNZ 22 Jul 73 Signal detection and communication in the WB6IOM 16 Feb 69 presence of white noise Signal generator for two and six meters WA8OIK 54 Nov 69 Single-frequency conversion, vhf/uhf W3FQJ 62 Apr 75 Six-meter mosfet converter WB2EGZ 22 Jun 68 Six-meter mosfet converter Short circuit 34 Aug 68 Synthesizer, genesis of a VE3FIT 38 Mar 81 TR-2500/2600 2-channel programming (HN) K9MLD 128 Oct 85 Two-meter converter, 1.5-dB NF WA6SXC 14 Jul 68 Two-meter preamp, MM5000 W4KAE 49 Oct 68 UHF GaAsFET Doubler, The Weekender: WA9HUV 65 Apr 89 UHF local-oscillator chain N6TX 27 Jul 79 Vhf converter performance, optimizing (HN) K2ZSQ 18 Jul 68 Vhf receiver, general-purpose K1ZJH 16 Jul 78 Vhf/uhf preamplifier burnout (HN) W1JR 43 Nov 78 VHF/UHF world W1JA 54 Nov 85 VHF/UHF world: low noise receiver update - W1JR 72 Dec 87 part2 VHF/UHF world: low-noise GaAs FET technology W1JR 99 Dec 84 VHF/UHF world: VHF/UHF receivers W1JR 42 Mar 84 Weak-signal source, 144 and 432 MHz K6JC 58 Mar 70 Weak-signal source, stable, variable output K6JYO 36 Sep 71 Yaesu's latest VHF/UHF receiver, add general W6MGI 67 Oct 85 coverage Yaesu's latest VHF/UHF receiver, add general Short circuit 97 Oct 87 coverage vhf and microwave - transmitters Title Author Page Issue ----- ------ ---- ----- 1152- to 2304-MHz power doubler WA9HUV 40 Dec 75 1270-MHz video-modulated power amplifier W9ZIH 67 Jun 77 1296-MHz frequency tripler K4SUM, W4API 40 Sep 69 1296-MHz linear, high-power WB6IOM 6 Aug 68 1296-MHz linear, high-power Short circuit 54 Nov 68 1296-MHz power amplifier W2COH, W2CCY, 43 Mar 70 W2OJ, W1IMU 1296-MHz ssb transceiver WA6UAM 8 Sep 74 1296-MHz transverter K6ZMW 10 Jul 77 144-and 432-MHz stripline amplifier/tripler K2RIW 6 Feb 70 144-MHz 10/80-watt amplifier WB9RMA 12 Feb 79 144-MHz fm transceiver, compact W6AOI 36 Jan 74 144-MHz fm transmitter W6AJF 14 Jul 71 144-MHz fm transmitter W9SEK 6 Apr 72 144-MHz fm transmitter, Sonobaby WA0UZO 8 Oct 71 144-MHz fm transmitter, Sonobaby Crystal deck for 26 Oct 72 Sonobaby 144-MHz heterodyne transmitting mixers K2ISP 8 Apr 69 144-MHz heterodyne transmitting mixers Correction 76 Sep 70 144-MHz linear W4KAE 47 Jan 69 144-MHz linear, 2kW, design data for W6UOV 7 Mar 69 144-MHz low-drive kilowatt linear W6HHN 26 Jul 70 144-MHz multimode transmitter K2ISP 28 Sep 70 144-MHz phase-modulated transmitter W6AJF 18 Feb 70 144-MHz power amplifier, 10-watt solid-state W1DTY 67 Jan 74 (HN) 144-MHz power amplifier, 80-watt, solid-state Hatchett 6 Dec 73 144-MHz power amplifier, high performance W6UOV 22 Aug 71 144-MHz power amplifiers, fm W4CGC 6 Apr 73 144-MHz stripline kilowatt W2GN 10 Oct 77 144-MHz transceiver, a-m K1AOB 55 Dec 71 144-MHz transmitting converter, solid-state W6NBI 6 Feb 74 ssb 144-MHz transmitting converter, solid-state Short circuit 62 Dec 74 ssb 144-MHz transverter K1RAK 24 Feb 72 144-MHz two-kilowatt linear W6UOV, W6ZO, K6DC 26 Apr 70 2-meter synthesizer, frequency modulator for K9LHA 68 Apr 81 220-MHz exciter WB6DJV 50 Nov 71 220-MHz power amplifier W6UOV 44 Dec 71 220-MHz rf power amplifier WB6DJV 44 Jan 71 220-MHz rf power amplifier, fm K7JUE 6 Sep 73 2304-MHz power amplifier WA9HUV 8 Feb 75 2C39, water cooling K6MYC 30 Jun 69 432-MHz 100-watt solid-state power amplifier WA7CNP 36 Sep 75 432-MHz amplifier, 2-kW W6SAI, W6NLZ 6 Sep 68 432-MHz exciter, solid-state W1OOP 38 Oct 69 432-MHz power amplifier using stripiine W3HMU 10 Jun 77 techniques 432-MHz rf power amplifier K6JC 40 Apr 70 432-MHz solid-state linear amplifier WB6QXF 30 Aug 75 432-MHz ssb converter K6JC 48 Jan 70 432-MHz ssb converter Short circuit 79 Jun 70 432-MHz ssb, practical approach WA2FSQ 6 Jun 71 432-MHz stripline tripler K2RIW 6 Feb 70 50-MHz 2 kW linear afnplifier W6UOV 16 Feb 71 50-MHz customized transverter K1RAK 12 Mar 71 50-MHz heterodyne transmitting mixer K2ISP 8 Apr 69 50-MHz heterodyne transmitting mixer Correction 76 Sep 70 50-MHz kilowatt, inductively-tuned K1DPP 8 Sep 75 50-MHz linear amplifier K1RAK 38 Nov 71 50-MHz multimode transmitter K2ISP 28 Sep 70 50-MHz SSB exciter K1LOG 12 Oct 79 50-MHz transverter WA9IGU 44 Jul 69 6-meter amplifier W2GN 72 Apr 83 6-meter amplifier Short circuit 97 Aug 83 Aligning vhf transmitters Allen 58 Sep 68 Amplifier, 2 meter, 40 watt WB4GCS 50 Oct 83 Amplifier, 432-MHz, 1500-watt W2GN 40 Jul 85 AN/UPX-6 cavities, converting surplus W6NBI 12 Mar 81 CMOS 2-meter synthesizer Short circuit 89 Jan 82 Converting the Swan 120 to two meters K6RIL 8 May 68 External anode tetrodes W6SAI 23 Jun 69 Fm transceiver, remote synthesized for 2 WB4UPC 28 Jan 80 meters Heathkit Seneca As A 2-meter FM Amplifier W3NNL 8 Mar 89 Inductively-tuned tank circuit W6SAI 6 Jul 70 Lighthouse tubes for uhf W6UOV 27 Jun 69 Linear amplifiers, solid-state vhf AF8Z 48 Jan 80 Low-noise phase-locked UHF VCO part 1: the WA9HUV 33 Jul 86 noise problem Low-noise phase-locked UHF VCO part 1: the Short circuit 9 Dec 86 noise problem Low-noise phase-locked UHF VCO part 2: WA9HUV 25 Aug 86 construction and testing Modification of K9LHA 2-meter synthesizer K9LHA 93 May 81 for 144-148 MHz coverage (HN) Pi networks, series-tuned W2EGH 42 Oct 71 Signal Source for 903 MHz, The weekender: N6JH 88 Jan 89 Six-meter transmitter, solid-state WB2EGZ 6 Oct 68 Six-meter transverter K8DOC, K8TVP 44 Dec 68 Six-meter tunnel diode phone rig (HN) K2ZSQ 74 Jul 68 Solid-state power for 1296 MHz N6JH 30 Feb 81 Ssb input source for vhf, uhf transverters F8MK 69 Sep 70 (HN) Synthesizer, genesis of a VE3FIT 38 Mar 81 Temperature control, automatic WB5IRI 75 Jun 85 TR-2500/2600 2-channel programming (HN) K9MLD 128 Oct 85 Transistors for vhf transmitters (HN) W1OOP 74 Sep 69 VCO, 1800-2600 MHz W0DTV 21 Jul 85 Vhf linear, 2 kW, design data for W6UOV 7 Mar 69 VHF/UHF world: medium power amplifiers W1JR 39 Aug 85 VHF/UHF world: VHF/UHF exciters W1JR 84 Apr 84 VHF/UHF world: VHF/UHF exciters Short circuit 60 Oct 84 Water-cooled 2C39 (HN) WA9RPB 94 Sep 77 Weaver modulation, 2-meter transmitter N1COX 12 Jul 85 X-band beacons WA6EJO 29 Jan 87 vhf and microwave - microwave techniques Title Author Page Issue ----- ------ ---- ----- Designing a station for the microwave bands: N6GN 41 Feb 88 part 1 Designing a station for the microwave bands: N6GN 19 Jun 88 part 2 Designing a station for the microwave bands: Short circuit: 35 Oct 88 part 2 Designing a station for the microwave bands: N6GN 17 Oct 88 part 3 Inexpensive Multi-megabaud Microwave Data N6GN 9 Dec 89 Link Microwaves KA1GT 20 Feb 90 Microwaves: feedback KA1GT 18 May 90 Microwaves: laser communication systems KA1GT 18 Mar 90 Microwaves: microwave basics KA1GT 22 Jun 90 Microwaves: optical receiver KA1GT 14 Apr 90 Radial line stub design N1BEP 65 Feb 88 VHF/UHF world: microwave components and W1JR 71 Mar 88 terminology- part 1 VHF/UHF world: microwave components and W1JR 67 Apr 88 terminology- part 2 Waveguide Flange Drilling Guide WA4WDL 53 Jul 89