73 Magazine Radio Editions 1970 – 1980

73 Magazine Radio Editions 1970 – 1980

January 1970 (#112)

o Single Sideband AM-FM Modulation System – Using easily available filters …… W2BSP 4
o The Transceiver Companion – Does everything but change the baby …… W6AJZ 10
o A Simple Bench Power Supply – For those readers with simple benches …… ZL2AMJ 22
o Slow Scan Color Transmission – See cover for illustration of results …… Tarr, W4UMF 28
o Fascinating Fundamentals : Volta and His Piles – Zap! …… W2FEZ 36
o The Manuscript Game – Another construction article flushed out …… K6MVH 40
o Base-Tuned Center-loaded Antenna – Vertical antennas are not basically bad …… W2EEY 42
o Quazar QRP 40 Meter DSB Transmitter – Solid state to boot …… WA5WWN 46
o Simple Compact Six Meter Bandpass Filter – Cuts down your channel 2 DX …… WA5SWD/6 48
o Low-Cost Electronics: Japan’s FM Invasion – FM Changes from surplus to imports …… K6MVH 50
o Mobile CW – On the freeways, no less! …… K6RA 54
o Extra Class License Course, Part XII – Semiconductors. Last chance to learn this …… Staff 57
o A Pre-Amplifier for Ten-Meter Bands – Also works on CB, but don’t tell anyone …… WA3HMN 76
o Proper Use of Silicon Rectifier Diodes – Diode poppers, arise stamp out this stuff …… K3DPJ, WA3ACL 77
o Converting the 4CX1 000A into a Lamp – Excellent application for your spare tubes …… K3QKO 80
o Facsimile and the Radio Amateur – Are you missing out on FAX fun? …… K6GKX 82
o Tunable Solid State IF – 28-30 MHz i-f for use with UHF converters …… K1CLL 88

February 1970 (#113)

o Fascinating Fundamentals – The Terrible Jar at Leyden …… W2FEZ 14
o 18 in. Dipole on 15 Meters – February Fool article? Heh, heh! …… K9LGH 24
o High Performance Converter for 6 – 73 drags its heels into the 70’s with a tube …… WA9HES 30
o From Breadboard to Printed Circuit – The Easy Way – And it is easy, for once …… K1AOB 36
o The Camper: Mobile and Portable – Enradioifying the VW bus …… WA9EHE 40
o So You Think You Have Troubles? – Cutting blind ham’s antennas for fun …… W1EMV 43
o Frequency Synthesis – The Modern Way – Special book-length feature for FM fiends …… W2EUP 44
o Encoding and Decoding in FM Repeaters Part I – Encoders for Subaudible, Tone-Burst, or Whistle-On Use …… W6ZCL 72
o Encoding and Decoding in FM Repeaters Part II – Tone Decoder for Remote Switching Applications …… K6MVH 80
o Encoding and Decoding in FM Repeaters Part III – Setting Up the Tone-Burst System …… W6TEE 82
o How to Visit Foreign Countries – Using ham radio to make travel funner …… W2NSD 84
o The DX-35 Revisited – Exciting development for chirp haters …… W2AOO 86
o Panoramic Receiver for VHF – For 2 meter busybodies …… I1SL0 88
o Variable-Impedance Mobile Mount – Out, damned reactance! …… W1EMV 96
o Lossy Transmission lines – A shorty short …… KH6IJ/1 97
o Extra Class Study Course, Part 13 – RTTY, FSK, filters and other such trivia …… Staff 98
o New Linear IC’s for the Ham – Cheap-new-hot-have fun …… WA4KRE 115
o The Glop Will Get You If You Don’t Watch Out! – Watch out! …… W2ELU 126
o DX as seen by – Cartoon feature …… W6EIF 130
o The Micromitter – World’s cheapest rig …… WA3GGH 131
o A Simple Integrated Circuit Q-Multiplier – Makes the CW band ten times wider …… W2EEY 134
o Quick Stop and Reversing for Antenna Rotors – Whipping antenna whip …… PY2AUC 137

March 1970 (#114)

o Extra Services From Your Grid Dip Oscillator – Like checking crystals, tuning FM receivers and such …… WA4UZM 18
o Reverse-Current Charging – Turns out you really can recharge flashlight batteries! …… K8YUC 20
o A Poor Man’s Frequency Meter – Combines surplus from two services …… W6YAN 24
o Professional PCs From Roll-Your-Own Negs – Eliminates drafting, camera work, and darkroom entirely …… K6MVH 29
o How I Read The R.O.’s Handbook & Found Happiness – Instant profundity …… Johnson 36
o A Look At Amateur FM Standards – Or, how do we get out of this mess? …… WB6DJT 38
o An Inexpensive RF Wattmeter – Surplus meter for those too cheap to buy a regular wattmeter …… WB4MYL 43
o A Remote Multifrequency Oscillator For Surplus FM Units – Drive people crazy on lots more FM channels with this …… W2ACM 44
o Add Spotting to Your VFO – If your VFO is unspotted …… K8BYO 49
o Towards an Ideal Solid-State I-F For Amateurs – Closing in on the state of the art with Bill Hoisington …… K1CLL 50
o Ham Exchange – Visiting foreign amateurs makes trips more enjoyable …… WA2ELA 58
o Super Sixer – Heath wouldn’t recognize it …… WA3AQS 60
o Bob, Bob, Bobbin’ Along – Special April feature article. Well, it’s almost April …… K1YSD 62
o The Dip Light – A grid-dip meter with no grid and no meter …… VE3ECU 68
o 73 Checks Out The Kris Scanning Receiver – Snazzy …… Staff 70
o Two Conversions For The Motorola 41 V – Part 1: AC Power Supply …… K9PKQ 72
o Two Conversions For The Motorola 41 V – Part 2: 6 to 12V Filament Conversion – Here’s the surplus, if you want to make an issue out of it …… W6YAN 74
o A CW Monitor – Using a 98 cent audio module, you cheapskates …… WB2GQV 76
o The Logical Approach To Surplus Buying – Here’s your key to fun with those surplus logic circuits …… Kyle 80
o Converting The Sonobuoy to a 2W FM Rig – Two meters. Why not have some fun with this one? …… W1BYX 96
o Easy Diode Testing – Checking out those bargain diodes …… K4JK 97
o Turning The AN/GRC-9 Into a Novice Rig – 2-12 MHz transmitter-receiver …… W6JTT 98
o Extra Class Study Course, Part XIV – Measurements …… Staff 104
o VHF-FM And You – Part of our Encyclopedia of FM; a good part …… K9STH 118

April 1970 (#115)

o A Noise Blanker That Works – As opposed to that crummy one in Brand X that doesn’t work. And can be added to your present receiver easily …… W8RHR 17
o Hot Carrier Diode Mixer Converter – This is not an April Fool article …… WA6NCT 20
o Examining FM Repeater Operation – History of repeaters, ARRL involvement, and legal problems …… WB6DJT 28
o A Repeater Controller – Tone generator, timer, identifier, the lot …… WA4YND 34
o Understanding the Carrier Operated Repeater – Some of them take a good deal of understanding …… K6MVH 41
o Evaluation: Standard 2M FM 12 Channel Receiver – Okay …… W6QGN 46
o 7/8 Wave Mobile Antenna for 2 Meters – Why have a puny signal when you can have a mediocre signal …… W2EUP 50
o How Do Ham Stores Decide Their Trade-In Figures? – $200 for your S-38? …… W2CFP 55
o Beryllia- The Lethal Refractory – Worse than cyclamates …… WB2PAP 58
o Getting Your Extra Class License, Part XV – Spurious radiation is covered …… Staff 62
o A Work Session On The Wichita Repeater – If anything can go wrong …… W0DKU 78
o In expensive Semiconductors for the Ham – Giant Motorola ad that we paid for …… WA7KRE 81
o Renovating Surplus Meters – Making new scales for meters, calibrating, and like that …… WA0ABI 84
o A Bias Regulator for Linears – Simple gadget makes Class B linears practical …… ZL2ANG 86
o High Performance I-F and AGC System – Particularly for CW and SSB …… ZL2BDB 89
o Single Sideband on the All-Wave Radio – One transistor BFO, and no connections …… W7CSD 94
o Vacuum Tube Load Box – Invaluable for testing power supplies. Invaluable …… Ashe 96
o Repeater Directory – Special book length feature with photos, coverage maps, and access data …… Staff 99
o A Word About Repeaters – A special featurette …… WB2AEB 100
o The Fine Points Of FM Operation – Getting on frequency and other fine points …… WB2AEB 121
o How To Megger Your Antenna – It’s not dirty …… W2EEY 125

May 1970 (#116)

o 73 Comments on FCC’s Proposed Repeater Rules – Passage as proposed could be catastrophic …… Staff 20
o What Will Become of CW? – What became of the passenger pigeon? …… W5TOM 30
o FM-AM Transmitter-Receiver Aligner – Two transistors, any band HF or VHF, simple, useful …… W3JKL 34
o 5/8 Wavelength Verticals – Twice as good as a Quarter-wave …… WA0NGV 36
o The Intelligent Use of Two Meters FM – It is possible ……K1ZJH 40
o Plus 10 dB – The October ’68 article was better illustrated …… W2OLU 46
o A Ham-Style Burglar Alarm for the Car – First take two sticks of dynamite, then …… K2JLD 48
o Power Supplies From Surplus Components – Cheapskates’ power supply manual …… WB6BIH 50
o RF, Riviera Style – Quieting Buick’s super noise generator …… K9BDJ 58
o Keep ’em Cool In KPO Cans – Cheaper than blowing your cool …… G3KPO 60
o Towards The Ideal Solid-State I-F, Part II – Filter, Converter, AVC – State-of-the-art for VHF …… K1CLL 62
o Epoxies for Electronics – Cold solder joints become respectable at last …… W9KXJ 73
o FET Pre-amplifiers For VHF Operation – 20 dB gain = 100 times the power! ……WA4WDK 74
o Educated Idiot Lights – Like the oil light indicating your engine just burned out …… Holford 78
o Postage Stamp Transmitter for Six – Shades of Dick Tracy …… K1CLL 80
o Getting Your Extra Class License, Part XVI – RF power amplifiers …… Staff 88
o The 27-Minute Mobile Noise Limiter – If you build it right, it may last even longer …… W7SOH 102
o A Low -Band Police Monitor – For emergency, CD, or SDS use …… W6JTT 106
o A Mobile CW Transmitter – Gives a driver something to do with his two free hands …… W6BLZ 108
o An FM “Best Buy” – You have an FM ed itor and you have FM articles …… WA7EMM 112
o Science Fairs: Science Education – By the Science Editor of Radio Today …… Staff 116
o The Wichita Autopatch – Telephone through a 2m FM repeater (while you still can) …… W0DKU 118
o London’s Science Museum Demonstration Station – GB2SM …… Ellison 125
o Try Bigger Knobs For Better Operating Performance – Tiny knobs cramp your style…and fingers …… WB2ICV 129

June 1970 (#117)

o A Practical DDRR Antenna – Expensive, difficult-to-build mediocre antenna …… W6WYQ 20
o VFO Circuit – In case you are tired of crystal control …… K0HVK 36
o The Low-Noise Antenna – High noise you’re looking for? …… WB6JNI 39
o Experimental Remote SWR Indicator – Experimental means we think it might work …… W2EEY 41
o The Little Wonder: Mark 11 – Proving again that almost anything will radiate …… W5ZBC 46
o CW Can Be Fun (With the Ord DK-1) – if you know the code …… Staff 48
o Two Receivers From One Antenna – Without suckout (tsk) …… WA6UFW 49
o Factors in Coaxial Cable Loss – Like temperature and frequency …… W9KXJ 50
o Improving Trap-Type Vertical Antennas – By adding an element …… W2EEY 52
o Measuring Incident and Reflected RF – It’s the difference th at counts …… VE7BS 56
o Government Surplus Straight from the Horse’s Mouth – Hay, Hay! …… WA9ANW 58
o QRP – 40m with 40 mW …… WA3JBN 62
o Ground Support for the Powder Puff Derby – Public service and politics …… W7ZC 64
o Coax Adapter VHF to BNC – For 75 cents …… W9MEV 73
o The Sly Beam – 32 elements on 2 meters …… ZL4TAH 74
o Three Unrelated Articles; Installing the Swan 250-C Noise Silencer; Measuring Rf Output; Useful Cable Clamps …… WA6CPP 80
o 1/4 Wave Top-Loaded Mobile Antenna – F or 20 meters …… W5AZE 83
o 11 Element 2 Meter Circular Quad – 9 dB forward gain …… W4KAE 86
o The 633 – For 10, 15, & 20 meters …… ZL2ASJ 92
o 73 Tests the Grundig Satellite Receiver – Tunes in CW, SSB, FM, and everything! …… Staff 97
o 104 De-RF Your VTVM – Works better …… WA0FFJ
o Getting Your Extra Class License, Part XVII: Conclusion – Now go! …… Staff 105
o Special Antenna Catalog Section – For your reference pleasure …… 117
o More Accuracy on Microwaves – Improvement on December wavemeter …… Goldstein 142

July 1970 (#118)

o Improved Color Slow-Scan Television – Using Polaroid films …… W4UMF 18
o Worldwide ITU Prefix/Call Area List – Call prefix allocations …… W1SWX 24
o The Super Autopatch – Telephoning from your FM mobile …… K6MVH 26
o How to Build a Keyer – And still retain your appliance-operator status …… W9KXJ 36
o A 2-Channel Search- Lock for FM Receivers – Listening to two repeaters at once …… W3DTN 38
o A Look at Allied’s Portable FM Receivers – Under $20 …… K9STH 44
o 450 MHz Mighty Mite – One transistor superregenerative receiver …… K9VXL 46
o Cheapie 6-Meter Half-Gallon – Use 811-As and be heard …… K1CLL 48
o A High Performance Power Supply – Using an IC voltage regulator …… K0ECF/7 54
o A Soldering Gun Tip – New SCR-522 conversion article …… WB6PKA 59
o Latham Island DXpedition – This Zanzibar isle is for the birds …… 5H3LV 60
o Study Guide For Your General Class License: Part I – Okay Techs, here it is! …… Staff 66
o DB to Power …… WA3JBN 85
o Protection For Grid Dipper Coils – Low-cost insurance policy …… WA0ABI 88
o Mobile CW Receiver – But where do you mount the code mill? …… W6BLZ 90
o QSLing, Ham Radio’s Own Con Game – Not for pecuniar interest, eh? …… VK4SS 96

August 1970 (#119)

o Mount That Mobile Right! – There are a lot of ways of doing it wrong; just ask most mobile ops …… K4IPV 14
o Amateur Wattmeter for $3.85 – Unless you’d rather shell out umpteen bucks for a Bird wattmeter …… K1CLL 20
o The Consummate Console – Be the envy of every ham in town. Even your wife might warm just a little …… WB2FBF 22
o An Impedance Multiplier for the VOM – How to make your VOM read like a VTVM or such …… K6DQB 27
o Repeater Audio: Time Out for Quality – Hifi on FM? We sure can use it in place of that pilot-to-bombardier quality we hear so often now …… K6MVH 31
o ATV: Getting a Better Picture – Improving antennas, feeders, and converters …… WA6BJV 34
o That Contest Craze – Fiction? …… VK4SS 40
o Log Periodic Antenna Designs for UHF/VHF – Cover feature …… W3DUQ 45
o Ham Radio Chess – One hundred chess games on one frequency generate less QRM than one lid reciting his stupid “lineup” …… W0BMW 48
o Knight Kit KG-696 Rf Generator Kit Review – Reader test report …… W9KXJ 52
o A VHF AM Transmitter – Using low-cost transistors …… Brubaker 54
o Raising a Rhombic – First take an acre or so of land, add one rhombic, etc …… W8DYF 60
o TVI From An Antenna Rotator – What next? What next? …… W3URE 65
o The ICmitter – AM o r CW on 20- 160 meters …… Goldstein 67
o General Class Study Course, Part II – Reactance exposed as resistance in disguise …… Staff 68
o Perkins Radio Club and K1TPX – Radio club for the blind …… Champagne 87
September 1970 (#120)
o Integrated Circuit CW ID Generator – Automatic identification for your station …… W7PUG 16
o Six Volts From Twelve Volts – Six buck solid state voltage dropper …… K3GSV 26
o The Indicating Oscillator – Another dipper circuit, 1-400 MHz …… KH6AF 29
o Tuning VHF Receivers – Clever infinite attenuator and oscillator unit …… K1CLL 32
o Code Practice a la Baby Talk – Everybody’s doing it …… W9PXA 35
o Using Those Bargain ICs – Three testers will test most ICs you will encounter …… WA2IKL 38
o Repeater Antenna Separation – One of the easiest ways to improve repeater range …… K6MVH 45
o Diode Stacks – Replacing those high-power rectifier tubes …… W2BDG 54
o Deluxe Receiver Gain Control – Using one transistor and a zener …… VU2JN 56
o A New Approach to Communications Equipment – A call for manufacturer standardization …… K9ALD 60
o Reed Relays for Coaxial Switching – Work very well for UHF low-power applications …… W7CRV 64
o File Box Resistance Decade – First in a series of file box test gear …… WB4ITN 66
o The DyComm VHF-FM RF Amplifier – Transistorized, 15 watts out …… Staff 70
o General Class License Study Course – Part II, Alternating Current …… Staff 74
o What Really Happened to Hamdom? – The horrible truth about CB …… W9HBF 82
o Beer Can Two-Meter Coaxial Antenna – Drink you way to a good signal …… WA0RWQ/6 86
o Converting 24V Relays to 115 VAC – using a couple of cheap diodes …… Douglas 88
o Versatile 2m MOSFET Converter – Low noise, high gain, ultra stable …… WB6YVT 90

October 1970 (#121)

o Understanding ICs – Nice National Semiconductor ad …… W6DNS 16
o ICs for Amateur Use – Nice Amperex ad …… K1CLL 22
o IC Regulator Circuits – Nice RCA ad …… WB2EGZ 32
o Camouflage – Cutting down on fur coat money …… K9AZG 40
o Phase-Locked Loop – Does every thing better than Mr. Clean …… K5JKX 42
o Function Generator – .01 Hz to 4 kHz generator …… WA2IKL 58
o Toning Repeaters – How, why, and the gadget to do it …… K6MVH 64
o IC Power Source – Simple regulator …… W1RAN 69
o Solid-State Timer – Ten minutes …… WB4MYL 70
o Four-Wire Inverted Vee – Better than average antenna …… WA6COB 72
o IC Marker Generator – 200 – 100 – 50 – 25 kHz …… K4BBC 75
o Improving Regulation – In solid-state high voltage supplies …… K6BW 77
o General Class Study Guide – Part III – Power …… Staff 78
o DXing In Roumania – Peking behind the iron curtain …… YO2BO 96

November 1970 (#122)

o Differential J-FET Pre-amplifier – Now hear stations before they come on the air! …… W4KAE 16
o Dual Gate MOSFET – Rendering single gaters obsolete? …… WB2WYO 22
o Remote Quad Tuning – From the shack …… W6AJZ 27
o Two-Watt Six-Meter Transmitter – Using the crystal- heterodyne VFO …… KlCLL 30
o Semiautomatic FM Channel Scanning – What, another FM article? Yup! …… WA0QPM 38
o Low Cost Automatic Keyer – An excellent “first project” …… WB4MYL 42
o AC Switching with Self-Powered ICs – Clever zero voltage switch …… W2FBW 48
o Pioneer Radio on the Prairies – What it was like 45 years ago …… W6CXC 54
o SST-I Solid State Transceiver for 40 Meters – Now here is a real fun project …… W9ZTK 64
o A Low-Cost RF Wattmeter – Novice simple, Generally useful, Extra accurate …… WA3AJR 72
o Calibrate That Calibrator – Thus rendering it even more useful …… W2KPE 77
o General Class Study Guide: Part IV – Impedance matching, etc …… Staff 80

December 1970 (#123)

o Solid State Exciters – For the build-don’t-buy crowd …… W6YUY 16
o Solid State Control for SSB Exciters – For really smooth tuning …… W4NVK 28
o Hams Are A Funny Bunch of People – Except me and thee …… K3KMO 31
o A 2 Meter Minitransmitter – Hand portable for FM repeaters …… WB6BIH 32
o Receiver Offset Tuning for the HW100 – For tuning in old timers who can’t stay on frequency …… WAZEAW 39
o The Little Gate Dipper – 1.7 – 225 MHz GDO with no G …… W5ETT 44
o Clinks In A Vacuum – The wife’s view of amateur radio …… Derfler 48
o Your Second Linear – Using the fabulous RCA 3-500Z …… W4AYI 51
o General Class Study Course – Vacuum tubes… remember them? …… Staff 75
o Yipes, it Talks – Start le your friends …… W2FEZ 94
o Regency -An FM Late Starter – Wow! …… K6MVH 96
o Transi-Test – Transistor tester, simple …… W6QPP 101
o Two Terminal Current Limiter – Most have three, so this is a step ahead, right? …… Beene 107
o Index to Articles in 1970 – Ridiculously detailed yearly index …… 108

1971

January 1971 (#124)

o LX for Leisure – A relaxed DXpedition to Luxembourg …… G3BID 18
o Try DXing the World the Hard Way! – Around the world in 90 frustrations …… K6KA 22
o Split Phones – A DX Operating Aid – You’ve got two ears? Why not use them both? …… GW8PG 30
o Can Ham Radio Manufacturing Survive? – Maybe …… Staff 35
o Heath Tener Modification – Bigger fuse …… K8JLK 45
o Testing the RP Electronics Compressor – Cheapest wav to double your power …… Staff 46
o For the Love of a Ham – Show this to a wife (your own, preferably) …… WB6AOF 48
o Duty Cycle Duty Factor – It is your duty to read this …… W2OLU 50
o Repeater Zero Beater – An FM article? You bet! …… W1IRH 52
o Getting Hep to ICs – Pun intended …… K6MVH 56
o Voices from the Past – Ten, thirty, fifty years ago today …… Staff 62
o Basics of Surplus FM – Another FM article? What else? …… WB2AEB 64
o A Parabolic Beam for 10, 15, or 20 Meters – Big …… WA2SJZ 66
o The Galaxy PM 210 – Even more FM? Right! U.S. made, too …… K2ULR 69
o Lightning as it Affects Ham Radio – It affects, believe us, it affects …… Patzsch 73
o IC Receiver Accessory – Our old friend Select-o-ject in I.C …… W2EEY 76
o Inverted Attic Antennas – TVI from the mystery neighbor …… W2SF 81
o Double Balanced Mixers – The heart of SSB …… K2PUR 86
o A Quick and Permanent Tool Marker – Tom Swift and his Electric Pencil …… K5JKX 91
o There is a Santa …But! – Think before you pray …… W6LJZ 92
o A New Start from Washington – An insider refutes QST December editorial …… W8GI 94
o Amateur Study Guide Supplement – Q & A special with no A’s …… Staff 98

February 1971 (#125)

o New Approach for the Metal Locator …… W6HDM 10
o Practical Circuit Applications Using That Strange Didoe: The Varactor …… Mengel 16
o A Clean AFSK Unit …… WB4FMP 22
o An SSTV Patch Box …… W4UMF 26
o Amateur TV Easy …… K2OJL 30
o A Tuning Indicator for RTTY and FAX …… W1OER 34
o Two Simple Tone Units For Repeater Use …… VE2BZK 36
o On Efficiency Organization and Magazines …… WA3BKC 40
o 220 MHz Converter for FM Pocket Receivers …… K1CLL 42
o Magnetic Deflection for SSTV …… WB2ZIV 46
o Build an 8 Transistor Code Oscillator With Just One IC …… K6MVH 53
o The Beeper …… K1ZJH 56
o Study Guide- General Class License- Part VI – Gazintas and Gazoutas …… Staff 62
o Phone Patch Level Adjustments and Manproofing …… W4NVK 78
o Wouldn’t You Like To Get Into RTTY? …… WB2TCC 81
o Perf-Board Terminal …… K5LLI 83
o Tuning All-Band Vertical Antennas …… W5QKO/AI4QKO 85
o The Low-Ohm Meter …… W3YZC 87
o A Cheap and Easy Gus Watcher …… W9SDK 92

March 1971 (#126)

o Integrated Circuit Audio Filter – Clean up that dirty audio with a filter …… W2EEY 12
o Integrated Circuit Six Meter Converter – Not for bigots with six unconverted meters …… WB4KMB 16
o Trap-type Vertical Antennas – Adding stubs for two meters. FM article …… W2EEY 18
o Resurrecting Granddaddy – Fun with a 1925 parametric amplifier …… K6BIJ 22
o Digital Counters – Five digit …… W0LMD 26
o Identifying Surplus Electronic Equipment – Military marking system …… W6DDB 37
o The Horizontal-Output Linear – A $50 kilowatt amplifier? …… W2AOO 40
o DX America First – DXpedition to Maine …… K1OXK 43
o Phone Patch: No Cost, No Wires – Phone patching is illegal in Rwanda. Too bad …… WA2EAW 49
o Mt. Snow: To the Repeater – On Skis – Our cover feature. An FM article …… K6MVH 54
o Repeater Audio Mixer – Another great FM article …… W1ELU 57
o Something New in PC Construction – Building with scissors …… WA1EJU 61
o Switching Remote Linears – Like in the car …… W0HFK 65
o Digital RTTY Accessories – Regenerative repeater, stunt box, speed conversion …… K5ZBA 66
o The Coathanger Groundplane – Two meters (FM!) …… K6MVH 72
o General Class Study Course – Part VII. Power and how to get it ….. Staff 74
o Reading 5 Code RTTY in Binary – Just what you’ve been waiting for …… WB2MPZ 93
o Petitions to FCC – 220 MHz proposals …… Staff 118

April 1971 (#127)

o What’s Really Different About FM? – A lot, a whole lot! …… K6MVH 12
o Aftermath: A Noise Blanker That Works – The author returns to the drawing board …… W8RHR 18
o FM Intermodulation on 2m – Chart for locating interference sources …… W6YAN 20
o Hotroddinq Motorola’s Hybrid HTs – A commercial bid for the 450 market …… W7PUG 28
o Stability Without Crystals – Introducing the Sentry Modcom, whatever that is …… Staff 30
o Switching Remote Linears – or local linears …… W0HKF 32
o Using Microwave for Repeater Links – Microwave propagation for any purpose, really …… Lenkurt 34
o IC Repeater Identifier – It will also identity any other station …… WB6BFM 49
o Testing the National NCX 1000 – And enjoying every minute of it …… W2NSD/1 58
o Build Your Own 2M FM – Build this little hand transceiver …… K1CLL 60
o Repeater Directory for 1971 – Every open repeater in North America listed here …… Staff 78
o National FM Standards – FM channels on the VHF and UHF bands …… W6YAN 100
o The FM-Marketplace – Buyers’ guide to 2m FM transceivers …… Staff 102
o Meter Evaluator – New, and-much better, way to measure meter resistance …… Marovitch 116
o A Simple Varactor Modulator for Going FM – Changes AM rig to FM …… WA9TFY 121
o FM Fun With a Scanner – Listening to eight channels at once …… Staff 122
o Low Cost Signal Source – 1.8 to 450 MHz for tuning your receiver …… VE3GFW 124
o Even More on Touchtone – Answers to your questions on Touchtone …… W1IRH 126
o A Solid-State Preselector – Tubes you’re expecting? Read brand C magazine …… W5JJ 128
o The Transistor 12 Watter for 10 – Three transistors and a barrel of fun …… W5PAG 131
o A Slice of Nippon Culture – How did an SWL article get into 73? Lordy! …… Staff 135
o Ten Tee Receiver Test – Nice new portable receiver …… WB2MYU 138
o Getting Publicity for Ham Radio – And, boy! Can we use it! …… K0YTI 140

May 1971 (#128)

o A Big Signal on 75M, Mobile – Only 54″ long! …… W6MOG 14
o A Dual Gate FET Preamp for 2 Meters – Do it yourself preamp for those too lazy to buy …… WB6BIH 20
o A Neat and Novel Receiver Accessory – 73 finally invents the crystal calibrator …… WA6CPP 24
o The Hartley Oscillator Story – Invented in 1914, and still with us …… K2SKV 28
o The Widening World of Instant Replay – To videotape or not to videotape …… Staff 30
o Design Concepts for Low-Power Amplifiers – Using some new transistors …… Campbell, Westlake 36
o The Price of 10 Extra Feet – An epic in trivia …… K9PYY 39
o A Transistorized 10 Meter DSB Transmitter – Four transistor rig …… K4EPI 40
o Reviewing the 1971 Radio Amateurs Handbook – It’s okay …… WB2MYU 42
o On the Spot – Report on LaBalsa ham-raft …… VK4SS 46
o FM Walkie-Talkie Transceiver Directory – Prediction: Walkie-Talkies will be very popular …… Ralston 52
o Advanced Preamp Compressor Clipper – Can also be used by Generals …… VE3GSP 56
o The transistorized LM Freq Meter – 1971-izing this WWII goody …… W5SOT 60
o Ham Radio, the Bible and Peru – Ham radio in the interior …… OA8V 66
o 450 Remote Site Transmitter – Solid-state rig …… WA1HVG 69
o The S-Derived Filter – For cw audio filtering …… W3KBM 74
o Electronic Health – A cure for cancer? …… Moore 76
o Experimenter’s One-Tube $10 2-Meter Transceiver – If you like tubes …… W9HBF 78
o Questions, Questions, Questions – And answers …… W9EGQ/KHD6961 80
o Understanding Your Amateur Radio Operator – XYL’s ham dictionary …… WA6JLJ 82
o High Power Surplus for 2M FM – Very reasonably priced dB’s …… K6MVH 85
o Evaluation of Swan’s 6 and 2 Meter Antennas – They work good …… WA6CPP 90
o General Class Study Course: Part VIII – Transmitters …… Staff 94

June 1971 (#129)

o Driven Versus Parasitic Antenna Elements on Two Meters – Are they really better? …… W6AJF 12
o 3 Squares for Two – Humdinger Quad …… K8CFY 18
o I Can’t Learn the Code – Too bad. See you on eleven meters …… W0FEV 22
o Covering Additional Frequencies With Dipoles – 40/15m, 80/10m, etc …… W9EGQ 26
o Weather Balloon Verticals – The only way to go is up …… K4EPI 32
o Squelch Addition for the Pocket Pager – You don’t have a pocket pager? …… WA8PIA 34
o VFOing the Twoer – Drive your friends off two meters …… WA3WHI 40
o Transmitter Tuning of Mobile Antennas – Loading coil final tank circuit …… W2EEY 44
o I Built a Counter – The Heath. It works …… Sessions 48
o Low Cost Transistor Power Supply – Also powers high cost transistors …… W8AVR 52
o Don’t Trust the Ground Wire – Particularly if it is over 30 …… W5FQA 54
o The File Box Capacity Decade – Handy …… WB4ITN 56
o A Practical 40 Meter DX Antenna – 4 honest, not to be sneezed at, dB! …… W7JLU 60
o A Commercial Bid for the 450 Market – Meet the Alpha 100W amplifier …… Staff 63
o Modification to HW Transceivers – Adding headphones …… WB2WYO 65
o CW Selectivity – For the sideband receiver …… ZL4OK 68
o General Class Study Guide: Part IX – Putting the “Tell” in “Tele” …… Staff 80

July 1971 (#130)

o An IC Audio Processor – Two IC Project …… W2EEY 16
o Audio Signal Generator – Wein bridge reinvented …… W3SGV 20
o Questions, Questions, Questions – Answers, answers, answers …… W9EGQ 24
o A Filter Box for CW Ops – Mind boggling CW selectivity …… K8TSQ 26
o Duals – Think piece for this month. Think! …… WB2PAP 34
o Miniature Add-On Oscillator for 2M FM – Little P.C. unit …… WB6BIH 40
o Collinear Gain Antenna for VHF/UHF Repeaters – Verticle beam antennas? …… K6MVH 42
o Invitation to Transmit – This is women’s lib? …… Thurmond 43
o FM Directory – Everything you always wanted to know …… Staff 49
o Desktop Base Stations from Motorola G Strips – Another FM article in 73? …… W9VZR 56
o Camouflage Extra Class – How to sneak a 40m beam past the XYL …… W4CWB 63
o File-Box Transistor Beta Tester – Are your transistors really adequate? …… WB4ITN 66
o 2 KW From Heath – Heath does it again! SB-220 …… W6BMK 77
o General Class Study Guide – Part X – The listening post …… Staff 80
August 1971 (#131)
o DXpedition to the Laccadives – Another rare one de-rared …… VU5KV 16
o Facsimile for the Radio Amateur: Part I – Scan these facts …… Dean 22
o You Can Take it With You – Camper portable …… K5PAC 28
o Diary of a DXpedition – KD2UMP dumps on DXers …… KD2UMP 32
o “TINY TIM” Linear Amplifier – All bands 600 watts …… WA6VLI 38
o Four-Tube Station – For 40 and 80 meter CW …… W5LET 48
o All’s Well in Amateur Radio? – Not on your ARRL tintype …… W8GI 54
o A Digital Readout for Your VFO – You might call this Signal Two …… WA2IKL 56
o 15 Meter Signals from Jupiter – You don’t need the Arecibo dish …… K6MIO 66
o General Class Study Course: Part XI – Antennas and feedlines …… Staff 75
o The Pink Ticket Rejector – Wales amateur invents the wavemeter …… GW8PG 90
o DX From the Stars – But does it count for DXCC? …… WN4ONW 93
September 1971 (#132)
o Transformerless Power Supplies – Theory and six practical circuits …… K3SVC 14
o Build a Solid-State Module TV Camera – And amaze your friends …… W0KYQ 18
o An Experimenter’s Guide to IC Substitution – Getting HEP to IC’s …… K5JKX 28
o Microwaves and Microsounds – How to see underwater ….. K1CLL 38
o RF Power Measurement with Hot Carrier Diodes – Rf wattmeters for up to 450 MHz …… W6AJF 42
o IC/Photocell Compressor/AGC Unit – With no noise buildup problems …… W2EEY 47
o The Theft Stopper – Booby trap for the car …… K4EPI 52
o A Marketing Man’s Approach to Ham Radio – Ham radio is a product …… WB8CDU 53
o Multi-Channel Operation with the Motorola HT-200 – HT-200 modification …… K8YQH 59
o Facsimile for the Radio Amateur: Part II – Scan this thriller continued from last month …… Dean 66
o Man-Made Interference – Its causes and cures …… WB5DEP 78
o A Linear Stable VFO – Better a VFO than a UFO …… W8RHR 86
o General Class Study Guide XII – Some general questions on TVI, etc …… Staff 89
o Effective Heat Sinking – Preventing fried germaniums and silicons …… K5ZBA 101
o The Spider – Interfacing your transceiver and linear …… W4RIZ 104
o “Say Coo, Say Coo, Day Eckees” – Some hams don’t speak English …… W7OXD 107
o An IC Pulser for the Amateur Experimenter – For the many unpulsed IC’s around …… W6GXN 112
o A DC Isolator for Phone Lines – Keep out of trouble …… Weinstein 117
o New Hope for Learning the Code – Learn the code in two hours …… WA1KWJ 119
o 73 Tests the Gonset Super Scan Receiver – Minding 8 FM channels at once almost …… W2NSD 122
o New Mark Products $30 Battery-Boost Regulator – Works from 11 volts up …… Brown 124
October 1971 (#133)
o Wide-Range RF Milliwattmeters Using HCD’s – Using Hot Carrier Diodes! …… W6AJF 15
o Signaling Through Space Without Wires – How it all got started …… K1CLL 23
o An Instant FM Repeater for Emergency Use – Two FM rigs one repeater …… K2OAW 29
o It’s the Real Thing – Power supply not using transformers …… VE3GSP 31
o Meteor Showers: On Prediction Accuracy – WAS on two meters? Why not? …… W5KHT 37
o Simple Digital Remote Control Circuits – Doing lots with few wires …… W1EZT 41
o How to Be An Amateur – A good amateur is ignorant, egocentric, etc …… W2ZGU 49
o A Simple Reverse Current Battery Charger – For recharging flashlight batteries …… W6FPO 55
o It’s In the Bag – Almost …… WB6JLC 59
o Passive Repeaters – And you can rent out the front for a billboard …… W7EEX 61
o Converting the AC/DC for WWV – Keep WWV at hand to check your calibrator …… W3JJU 75
o Fail Safe Switching – Infallible sequential switching …… W7CJB 77
o Back to Mother Earth the Easy Way – Installing a 10′ ground pipe – easily! …… WA1FHB 79
o 3 dB for 3 Bucks – Audio tailoring for SSB …… W2EEY 81
o The Ham’s Publicity Primer – Spreading the word …… WB2FBF 85
o Some Notes on the Swan 350 – Six improvements for a great rig …… K1KXA 101
November 1971 (#134)
o A Big Three Element Beam – Three elements on 75m – ZOWIE! …… W4AXE 13
o Remote Tune Your Groundplane – This is a real screwed up antenna …… W2AOO 17
o How to Build an Economast for Under $50 – Towerless is powerless in working DX …… WB2FBF 21
o A Gain Vertical Antenna for 2 Meter FM – 10 dB = 10 X power, transmit and receive! …… K9STH 25
o Photographing Radio Equipment – Maybe we can have better pictures in 73? …… W2EEY 29
o Biasing the Transistor Audio Amplifier – Who among us is without bias? …… W5JJ 37
o The Split Site Repeater – Greatly improves repeater coverage …… K6MVH 39
o The Art of T-Hunting – Have you been missing this fun? …… WB6IQS 45
o An Ultra-Simple Selective Audio Filter – Ideal for the CW op, moonbounce, etc …… W8RHR 49
o Transistor/Diode File Box Tester – Better lay in a supply of file boxes …… WB4ITN 51
o Crystal Tester – Two transistor go/no go tester …… K6VCI 55
o A Compact Kilowatt for Six Meters – Think of the TVI records you can set with this! …… K1ZJH 57
o The 3-4-6 Quad – “The first stateside signal of the day …… K2MNJ 63
o Let’s Revise the Morse Code – Isn’t it really about time? …… W7OXD 79
o A Pie-Net for Transistor Finals – Specifications for all bands 160 – 6m …… W5PAG 85
o Changing the 75S3 into a Better CW Performer – Using a $58 Collins mechanical filter …… OA4KF 93
o Why Coax? – Twin lead is cheaper and has less loss …… G3BID 95
o Communications Yardsticks – dB, dBm, dBmc and other erotica …… Lenkurt 101
o Metalphoto Your Nameplate – This will really fake out the vjsitors …… W6BLZ 107
o Amateur Radio and the Disabled – Great hobby for the shut-in …… WA2CGA 109
o Solid State Microwaves for Amateurs – Crystal control on 2300 MHz …… K1CLL 113
o Those Funny Looking Cards – A Washington lobby? Who needs it! …… WA1GFJ 123
December 1971 (#135)
o Convert Your 7 MHz Cubical Quad to All Bands – Everybody’s doing it …… K6DDO 13
o The Indoor Quad – How to cram a quad into an apartment …… K9RJO 17
o Getting to Know Tee Squared EII – This is a very logical article …… Thorpe 19
o More Power From 6146’s – Getting more power without disaster …… W2YW 27
o Radio Direction/Range Finder – Think Piece …… K6BIJ 29
o Curtis CW Identifier – For repeaters and remote base stations …… K6MVH 31
o Morse Memory – 30 letter memory for ident, contests, etc …… WA6ATT 37
o 73 Tests the GLladding 25 FM Transceiver – 25 watt $250 FM transceiver …… Staff 49
o 73 Tests the GAM TG-5-S Gain Vertical – Why we use it for our repeater …… Staff 77
o SCR Mobile Theft Alarm – Burglars please do not read this article …… W1BHD 80
o DX QSO’s or Contacts – The human side of DXing …… G3BID 81
o Code Shorthand – Toward speedier copying …… K2EE 83
o VHF Double Sideband – Sideband? On two meters? …… W4KAE 85
o 73 Tests the 270 Automatic Alarm – And likes it … and likes it! …… W2NSD/1 92
1972
January 1972 (#136)
o RTTY Art – A new art form is born …… WA6PIR 13
o The TT-63A As A Display Generator – Surplus conversion for RTTY …… K2BEH 17
o Television Monitor – All solid-state except for the tubes …… K0MOC 21
o 73 Tests The Icom IC-21 Transceiver – Twenty-four channels -holy moly! …… K1NUN 27
o 73 Tests the Regency Transcan FM Transceiver – Listening to 8 repeater channels at once …… W2NSD 29
o 73 Reviews The Allied AX-190 Ham Receiver – New solid state receiver for $250 …… Staff 30
o Phone Phreaks vs Ma Bell – How people get caught cheating TPC …… WB8LBV 31
o AFSK Revisited – or, how I learned to stop worrying and love teletype …… WA3AJR 35
o Tuning Indicators for SSTV Monitors – The sooner you try SSTV the better for you …… K7YZZ 39
o Designing Diode Matrix Units – For automatic ID …… WA0ZHT 45
o Circuits, Circuits. Circuits – Circuits …… Staff 53
o The Making Of A Modern Day Receiver – Why some are better than others …… W2FEZ 57
o Simultaneous Multi-Band Transmissions – In case you want to imitate W1AW …… W2EEY 61
o A Pre-Novice Transmitter – A fun way to learn code …… WA8OIK 67
o The Problem of Inversions – The logic of USB vs LSB on SSB …… K3WNX 69
o A Medium Frequency Converter For High Frequency Receivers – Tuning 400 – 1000 kHz on you r 80m receiver …… VK3IQ 73
o Easy End -Feed Z Match – End-feed antenna 80 – 10m …… G3OGR 75
o Coat-Hanger Antenna For 2 Meters Revisited – The improved coat-hanger …… Gelsinger 77
o 73 Uses The Simpson Model A- Well designed, well built …… Staff 79
o 73 Reviews the CT Power Amplifiers – Tiny mobile rock crusher …… Staff 85
o Optimal Vertical Antenna Loading Techniques – A vertical can be satisfying …… W2EEY 87
February 1972 (#137)
o Tuning Mr. Morse’s Key – Six whole pages on adjusting a key? Ridiculous! …… W6AJZ 15
o CW as seen by – Social Commentary …… W6EIF 20
o A Solid State High Frequency Regenerative Receiver -El cheapo receiver using one IC …… W6JTT 23
o Headsets And Ham Radio – Why you should throw away a lot of money on good headphones …… W6DDB 25
o The Perfect CW Signal – Eliminate keying transients …… W6YBP 31
o Tips For Raising Your Code Speed To 20 WPM – Extra, here we come! …… W7OXD 35
o Why Not Try QRP? – Win the 1000 mile per watt award …… WA8MCQ 41
o VHF Dummy Load Wattmeter – But will it ever replace the antenna? …… K9STH 46
o An Experimental Sweep Oscillator – Replace your vfo with this gem! …… W9ZTK 49
o Who Can’t Learn The Code? – Anyone; anyone at all can learn code …… W0HFK 53
o The Greater Dipper – 13 – 200 MHz simple dipper …… WA0AYP 55
o CW DX On 1/2 Watt – Enjoy QRP with this 1 watt rig …… KL7FSX 57
o 20-60W 1-4 Band TX – Two-tube CW transmitter. Tubes? …… G3OGR 59
o A Look At Oscillator Kits – You can still buy a lot for $2.95 …… K1CLL 63
o The Saga of Mikes And Earphones – Fascinating fundamentals …… W2FEZ 70
o Quick And Easy PNP/NPN Transistor Sorter – Why sorter gadet is this? …… W2EEY 73
o Self-Contained Reflected Power And CW Monitor – Two gadgets in one unit …… W2AOO 75
o Using & Improving The Ten-Tee Transceiver Modules – Ten-Tec, oh Ten-Tec, where are your ads? …… W2EEY 77
o Ham Hospitality a la Latin – The brotherhood of amateur radio …… WB4SNC 85
o General Class Questions and Answers: Part I – More up to the minute questions for the FCC study course …… K5JKX 89
o Circuits, Circuits, Circuits – Circuits …… Staff 97
o Modified Heathkit HW-16 CW Transceiver – Making a good rig even better …… WA3PRV 101
o The Automatic Transmission Line Tuner – Takes four transistors …… K3QKO 107
o Keyboard Morse Generator – Be the first on your block with one …… W5VFZ 113
March 1972 (#138)
o Converting The T-278/U Transmitter To 2m – What would a surplus issue be without a surplus article? …… W6JTT 15
o Converting The ART-13 – The supposedly dead resurrected ……W2ISL 19
o Improving Your HR-2 – Better selectivity. FM article …… WA1KJI 23
o Twelve Channels With The Regency HR-2 – Tsk, another FM article! …… WA1KJI 24
o Morse Centennial – Morse died in 1872. His code hasn’t yet …… Miligram 25
o Updating An Old Receiver – Like for instance a 75A2 …… W8RHR 27
o Learning From Emergencies – Los Angeles SCM report reprinted …… W2NSD 31
o Solid State Tunable I-F: Part II – 1650 kHz, better than 455. Much better …… K1CLL 33
o Checking Zener Diodes – Using a voltmeter …… WA0ABI 37
o General Class Questions & Answers – Practice questions. You read the book …… K5JKX 39
o Technical Aid Group – An old 73 feature reborn …… Staff 48
o Putting The ARC-3 On Two – Superbargain 2m rig …… WA4NAI 49
o Blown Fuse Indicators – For ac or dc fuses …… W0EDO 59
o Nonlinear Resistors – Such as light bulbs, thermistors, etc …… W6GXN 65
o Constant Current Charger For Ni-Cads – They’re expensive so be nice to them …… K6MVH 69
o The ESM/l Transceiver – Solid state pocket CW surplus rig …… WB6BIH 73
o Low Cost Transistor RF – With typical transmitter circuits …… WA8ZEL 75
o Updating the W1PLJ Counter – From Feb. 68 issue of 73 …… W6GXN 101
o Circuits. Circuits. Circuits – Circuits …… Staff 109
o Simple Diode Controller – “Dimmer” for soldering iron …… W2OLV 113
o Low Pass Filter In Action – Take that, TVI! …… VE3GSP 115
o Overseas Patching – Mars does our public service for us …… K6GKX 121
o Confessions Of A Surplus Hound – Neil is an old friend of Wayne’s …… W2OLU 125
April 1972 (#139)
o 200 Watt 2m Amplifier – Now you can be unpopular in six counties …… W4RIZ 17
o Using the Drake TR-22 – Does more than DU2 …… W4FQM/l 25
o An Auto-Bandwidth Selector Unit – Using two ICs …… W2EEY 27
o “Break” – A typical day on 2m FM …… K1NUN/1 31
o AFSK-MCW-CPO IC – Prizes if you can translate that …… K9MRL 36
o Using the LM373 – I-f amplifier IC projects …… K4DHC 37
o Repeater Site Alarm – Hear your gear being stolen or vandalized …… K6MVH 45
o T44 Base Station Conversion – Getting on 450 MHz for $30-$50 …… K0MOC 49
o The HR-2 as a Base Station – Power supply, deviation meter, etc …… WB6BHI 51
o FM Repeater Guide – World’s most complete list of repeaters …… Staff 55
o Electronic Symbols & Abbreviations – Just what you’ve always wanted to know …… Staff 86
o 73 Tests the Comcraft – Tunable receiver shakes FMers to core …… W2NSD/l 93
o The Florida Repeater Mess – Bad, but California leads again …… WA4RLG 95
o Ross & White Transceiver – With tone burst built in, yet …… W4FQM/l 99
o Ionospheric Effects of Thunderstorms – Perturbations occur …… WN5COZ 101
o FM as seen by – If the shoe fits …… W6EIF/4 104
o Circuits, Circuits, Circuits – Build, build, build…… Staff 107
o Extra Class Questions and Answers – Are you ready for the $9 questions? …… Staff 109
o Poor Man’s FM Base Station – Is FM for under $75 low enough? …… WA4UZM 117
May 1972 (#140)
o SSTV Monitor – Built from a kit …… WA4VAF 17
o 6 Meter Mobile Transmitter – 40 watts of FM …… Martens 21
o Quick Band Change Mobile Antenna – With output indicator …… W4LLR 27
o Audio IC – For modulators, receivers, etc …… K1CLL 32
o 73 Tests the Larsen Antenna – Very effective 5/8 wave mobile FM antenna …… W2NSD/l 36
o How to Get the Stuff into the House – Sneakily …… W2OOJ 37
o Anti-CW RTTY Autostart – 73 is Not anti-CW …… W4FQM/1 39
o Extra Class Q&A – Hedge that $9 gamble …… Staff 45
o A Modern VHF Frequency Counter – Can be built for under $100 …… K2OAW 53
o OSCAR Mariner on Mars – This should have run last month …… W7DXX 62
o TV Sync Generator – Using ICs …… K9AAC/7 65
o Radio Astronomy – Redeeming value science feature …… W4ZBE 74
o The Past is Prologue – FCC’s Prose Walker addresses QCWA …… W3UCT 85
o Noise and Receiving Antennas – Noise, alas, is the limiting factor …… W2EEY 93
o The Sewerpipe Antenna – 2m FM, of course …… W7PUG 100
o 73 Tests Pickering Keyboard – You still have to learn how to type …… K1NUN 103
o Circuits, Circuits, Circuits – And more circuits …… Staff 109
o Signal Reporting – Clever RST system devised …… W0HKF 113
o Real Cheapie Freq. Meter …… K6EAW 115
o Simple Car Ammeter – All solid state …… W6WDF 118
June 1972 (#141)
o Six Elements on Twenty Meters – Eliminate QRM …… VE3GEJ 17
o Slow Scan Television – Basics …… G5ZT 21
o Beaming the Vertical Antenna – On the low bands …… W6AJE 27
o Active Filter Design and Use – All kinds of filters Part I …… K3PUR 36
o Antenna Party – Simplified erection …… W0BMW 45
o Radio Astronomy for Amateurs (Part II ) – Projects for amateurs to tackle …… W4ZBE 51
o Patenting Your Invention – Why not … why? …… Hunter 61
o 20 dB Beams – Design and construction of VHF antennas …… K1CLL 67
o Converting the Progress Line – FM featurette …… WB9CXE 75
o Phasing Multiband Verticals – Ten thru eighty meters …… K0WF 85
o Ham TV and Public Service – PR the name of the game …… W9JER 89
o Modified Suction Cup Antenna – Not too modified …… WZEE4 93
o 300 MHz Frequency Scaler – Extends frequency counters to VHF …… K2OAW 97
o 73 Reviews the Savoy Antenna – Two and three band with vacuum traps …… W4FQM/1 101
o Care and Feeding of Tape – RTTY featurette …… WA6PIR 109
o Circuits, Circuits, Circuits – And more circuits …… Staff 111
o RTTY Filters – Elliptic function filters …… W5EZM 115
o Step On the Klutz! – Bob Manning rides again …… K1YSD 123
o Trouble Shooting For the Novice – You don’t have to send it back …… WA8OIK 129
o Low Cost C D Ignition – It has advantages …… W1KNI 133
o Lightning! – Its cause and cure …… W2FEZ 139
o 73 Tests the Regency Amplifier – 2m amplifier for FM is a beaut! …… W4FQM/1 145
July 1972 (#142)
o Modern VHF Counter – Part 2 of 3. This will be followed by a frequency synthesizer as part of the system …… K2OAW 5
o Solid State VHF Amplifier – FM again? Well, actually any VHFer should enjoy building th is experimental amplifier. Looks ideal to beef up the new International Signal rigs …… W9ZTK 15
o The Phased-Lock Loop – Hey, read this and snow everyone on 3999 with your tremendous technical knowledge. The P-L-L is here to stay so you might as well come to terms with it. The terms are easy …… K4ZFD 19
o VHF Converters – Dual gate Mosfets, the best thing since DUZ? …… W8RHR 23
o Add $15 T-Power – Vibrators are out, right? So here’s a replacement to help you get that old kluge FM rig on the air …… WB2BJN 31
o 1296 MHz Mixer – Don’t sneer, odds are you’ll be looking back on this article in a year or so when you start thinking 1296 seriously …… WB2YVY 33
o Thick Film R-F Pre-amplifier – For any band, really – but great for FMers …… K9STH 45
o The Heath IB-102 Prescaler – The 73 Tech Ed checks it out. Likes …… W4FQM 63
o The VHF Specialists FM Amplifier – Ten in, fifty out for 2m FMers …… K1NUN 69
o 71 Meteor Shower DXing – Real easy way to work 50 states on 2 meters. Haw! …… W5KHT
o Tone Decoder and Carrier Relay Circuits – Using the 741 op amp. Face it fellows, the 6SN7GT is no longer state-of-the-art and you might just as well start reading these op amp and phased lock loop articles without gnashing your teeth …… K2OAW 83
o Flying Spot Scanner for SSTV – Solid state unit, simple, relatively. Are you going slow scan right now or going to wait and miss a lotof fun you could have had ? …… WB8DQT 89
o Active Filter Design, Part II – Another chapter in the exciting “Filters Can Be Fun” series. Don’t miss the madcap ending next month …… K3PUR 97
August 1972 (#143)
o Navassa – The intimate inside story of KC4DX! …… W2NSD/l 4
o Slow Scan Television – Introduction and general principles …… W9NTP 16
o Premodulation Speech Processor – Get a 1 to 2 S-unit increase in signal …… W6AJZ 28
o Two Buck Signal Generator – For 2m FM and stuff like that …… WB4MYL 33
o Transmitters, Then and Now – History …… W2FEZ 35
o Practical Amateur FM Repeaters – Next month impractical FM repeaters maybe? …… K9STH 41
o El Cheapo Test Probes – Cheapskate use for old marking pens …… WB4MYL 58
o Prog Line Power Supply – Actually this will power any surplus FM rig, getting you on FM for beans …… K6VBT 60
o Random Access Switching – Some push-button control circuit ideas …… W9SEK 62
o Diode Receiver for 432 MHz – Also receives radio signals – like FM …… K1CLL 65
o The Taming of the HHRW – Why have the wife hate amateur radio when she can be induced to grudgingly coexist with it? …… K7TCU 73
o $5 Preamp Compressor – It really does make a difference …… VE3GSP 15
o Push-To Talk For The Sixer – Plus other modifications for this and the Two’er …… WB2YWO 77
o Audio Distribution Panel – And phone patch, plus other goodies …… K3PUR 81
o Voltage Multipler Supply for Scopes – A 300 volt transformer can generate 1500 volts thisaway …… K2BEH 87
o VFO Operation for the Two’er – Using the Heath HG-l0, Should work with the Sixer too …… WB6FVW 89
o /MM Maneuvers – Wherein our hero fixes a marine rig, answers a QRR and gets into deep trouble …… VK4SS 91
o The Sun and Radio – Science feature! …… W4ZBE 91
o Poor Man’s Transcanner – Mating a scanning receiver to an FM transceiver, the Regency HR2 and TMR-8 in this case. Result : aninexpensive transcanner …… WB9FOP 105
o SCR Regulator for KW Power Supplies – More flexible than one of those old great big expensive Variacs and voltage regulators to boot! Your HV supply will be obsolete without this …… W3HXO 101
o The Ideal Crystal Oscillator – For that 1296 MHz rig you are going to build …… K1CLL 115
o The HW-16 on Phone? – Simple modification …… WN2REW 117
o FM Adapter – FM gadget for low band receiver so it will work with those VHF converters and let you listen to all the repeaters …… W1LE 119
o Electric Timer – Turns things (like rigs) on, off, or whatever you want…… W6LM 127
o Circuits-Circuits-Circuits – Enough data for experienced builders to make do and references for beginners to get more info …… WA1KGO 129
o GDO Coil Extension – For short GDO’s …… WA0ABI 139
o 50 MHz DXing – The band is open a lot more than you suspect. Here’s how to get more DX out of it …… WA6CPP 141
o Home and Auto Burglar Alarms – Are you waiting to get ripped off before you put in an alarm? …… K6ZFV 158
September 1972 (#144)
o Plumbicon SSTV Camera – Cheapskate approach to slow scan …… K7YZZ 10
o WWVB Receiver – 60 kHz comparator receiver …… W7LHL 16
o Audio Signal Generator – A tube circuit? Yes, cigar tube …… WA6QVQ 27
o The CW Excavator – Remarkable audio filter …… W2GOM 30
o Exploring the Microwaves – Antenna and test receivers for 1296, 2300 and 3500 kHz …… K1CLL 38
o Balun Up or Balun Down – Advantages, disadvantages, and how to use …… G3BID 49
o Another Solid State Power Supply – Think piece with practical project resulting …… K7HKL 52
o IC Six Meter Receiver – Using only three IC’s …… K1CLL 57
o FM-AM Demodulator – Phase-lock loop application …… VK4ZFD 64
o Active Filter Design, Part III – Mentholated or plain …… K3PUR 76
o VHF Frequency Counter – Part III, at long last …… K2OAW 89
o FM Frequency Synthesizer, Part I – Under $100 and works with almost any rig …… K2OAW 99
October 1972 (#145)
o Frequency Synthesizer for 2 Meter FM Part II – For any 2m rig …… K2OAW 15
o A Big New Voice in Chicago – September cover feature at last …… W9NLT 25
o Solid State 6 Meter Crystal – HET – VFO – Solid State – the Works …… K1CLL 29
o The FET Voltmeter As A Nano-Amperemeter – For checking FET’s …… ZL2AMJ 37
o Time/Frequency Measuring System Part I – Station clock and frequency counter …… K5OUS 39
o Active Filter Design and Use : Part IV – Movie rights for this thriller available …… K3PUR 43
o Transmission-Limit Timer for Repeaters – For shortwinded FMers …… K6MVH 49
o Extra Class License Study Guide – Questions & Answers Part III …… Staff 53
o A Simple and Inexpensive Auto ID – Just what you need for the mobile rig …… WB6BIH 64
o Adjustable Time Delay Relay Circuit – For power supplies and such …… W0MQB 71
o Petition to the FCC – Some interesting ideas and comments …… W9JT 79
o Power Lead Filters for 432 – Makes things work alot better …… KlCLL 83
o Portable 110 – 90 and 200 watt supplies …… K3QKO 89
o Hot Carrier Diode Converter – For 15m …… W5LET 96
o RTL – Decade and Driver – With numeric readout even …… W9SEK 99
o A Power Supply – For linear ICs …… W6GXN 103
November 1972 (#146)
o The Traveling Ham …… G3ZCZ/W3 5
o Solid State Power …… W6EI 15
o TTL SELCAL for RTTY …… W9ZTK 20
o An IC TRF Receiver …… W6DNS 29
o The Mark II Electronic Keyer …… W6JJI
o Emergency Power for home QTH …… WA8OIK 37
o High Power Mobile …… W9NTP 42
o 220 MHZ Front End Using FETS …… K1CLL 45
o Double Delta Antenna …… W2EEY 52
o FMP Review …… Staff 57
o A Simple Converter for Beginners …… WA8OIK 59
o The Third Hand… Tester …… WB4MYL 65
o Lumped Line Oscillator VFO …… W5HDM 69
o A Mobile Base Station …… VE3ADI 75
o Ten-Roger …… K4YKB 78
o Synthesizer for 2M FM Part III …… K2OAW 81
o Counter Corrections …… K2OAW 92
o Gravity Abecedarium …… W0HLZ 92
o Low Noise Economy Preamp for 2M …… K6MVH 120
o 2m Crystal Correlation Chart …… W2NSD 126
o Extra Class Q&Q – Part IV …… Staff 127
o Indestructible Voltmeter …… W9DTW 134
o Who Was Tesla? …… Quinby 141
o A Simple VHF SWR Meter …… W2EEY 154
o Transistor Regenerative Receivers …… VK3IQ 157
o Antenna Measuring Contest …… WB2HJD 159
o SSB on 432 MHz …… WA8VHG 163
o A 185 Amp Arc Welder …… W9IMS 170
o Solid State Breadboard …… VE2DQ 178
o Want Your Own Computer? …… WA7SCB 183
o The Minimod …… G3ZCZ 202
o Update Your Heath HR-10 …… VE4RE 205
o 10 Meters Solid State …… W6OSA 207
o A Husky 40m Ground Plane …… VE1TG 212
o One Converter into Two Receivers …… W1OOP 216
o ICC Logic …… W3KBM 217
o Protect Those Diodes …… WA4CMQ 222
o Solid State Overload Protection …… WA0ABI 223
o IF/RF Sweep Generator …… K4DHC 226
o Amateur Radio in Yugoslavia …… YU3BH 249
o Radio Amateurs in Poland …… SP5HS 251
o Amateur Radio in the G.D.R. …… DM2HGO 253
o APC …… WA0ABI 257
o A Professional Digital Counter …… WA5LFN 259
o Repeat It – The Long Way ……W9CGI 271
o Interested in Antennas? …… K1CLL 275
o All About Lasers …… W2FEZ 283
o Put ‘Em All in One Box …… G3KPO 285
o Circuits, Circuits, Circuits …… Staff 296
o An Aural Transmitter Tuning Aid …… W1KPN 305
December 1972 (#147)
o AFSA IV SSTV Analyzer – Also works for RTTY …… W0LMD 17
o Single Conversion 2m FM – No 455 i-f needed – honest! …… K1CLL 23
o Miniature Tone Encoder – Fits inside the mike …… WA9VGS 29
o Tone Burst Decoder – For repeaters and such …… W3JJU 33
o Universal I-F Amplifier – Like for a 2m panoramic receiver …… DJ1SK 38
o Touch-Tone Connections – For repeaters …… K3DSM 43
o Simplest Audio IC Yet – Six parts and a battery! …… W6YBP 49
o Using Varactors – Everything you were afraid to ask …… W2EEY 51
o v18 Watts on 2m – Amplifier for FM …… WB4DBB 63
o Sideband Sniffer – Monitor …… G3OGR 65
o Crystal Checker – Wretched rock detector …… W4AYV 68
o 10 Amp Power Supply – Variable, yet! …… WB6TOX 73
o Using Transmission Line Sections – Pretty useful, actually …… VE4RE 79
o Radio Astronomy – Do it yourself …… WA3CXG 83
o Henryometer – In case you’re choked up …… WA8MLP 88
o 20m Transverter – For 75m transceivers …… W9IDP 89
o LED Primer – Expensive Christmas tree lights …… WB6JNI 96
o 40m FET Preamp – Hop up a crumby receiver …… W6BLZ 101
o Waterproofing – Liquid plastic system …… W2AOO 104
o Super CW Filter – One IC …… W6AGX 107
o Novice VFO for 40 Meters – The Clapp isn’t all that bad …… W9ZTK 112
o New Novice Regulations – Everybody gets VFO’s …… FCC 129
o 2m Preamplifier – FET vs MOSFET? …… W0IPB 134
o 3rd Party Regulations – Two and a half pages of No-No’s …… FCC 138
1973
January 1973 (#148)
o Obscene Commission Petition – That hints of sedition and of coition …… W2NSD 29
o Minds Will Boggle When You Add – This Handy-Talky Touchtone Pad ……WlODI 31
o A Widespaced Beam – Is the DXer’s dream …… VE3CFK 33
o To Visit Yaesu, You Should Plan – When next you travel to Japan …… WB6IZF/YB8AAP 37
o Chances Are That You’re Boun’ter – Love this IC KC counter …… KL7GGB/4 39
o Speech Processing Gives More Power – To transmit nonsense by the hour …… W0YBF 47
o Try This Tricky Two Tone Test Set – It’s not the worst, it’s not the best set …… W6GXN 53
o The Sunspot Cycle From 1750 – Tells us when DX is going to be nifty …… VE3CEA 60
o An FM Tester and Frequency Meter – Will put you right into your local repeater …… VE7ABK 65
o New DX Award Announced – For ops who try, but then get trounced …… K9AZG 71
o A Tilt-over Tower, Simple and Neat – For chickens who panic above 20′ …… W2ANT 73
o The New J-License Apparently Can – Give ham supremacy to Japan …… WB5EBC 77
o A Simple Kit for $18 – Makes a converter for 6m scholars …… K1CLL 79
o The Ham Content’s – The wife’s laments …… Lamonica 83
o Kick Heterodynes in the Crotch – With a tunable filter notch …… G8ABR 85
o One KW P.E.P. – To help you make DXCC …… WA9JMY 89
o High Power Silicon, Theory and Practice – Proving that Beta can often be fractious …… WB4LVA 97
o An I.C. Ten Meter Tuner – Build it not later, but sooner …… K1CLL 99
o A Sturdier Quad in Unusual Form – To defy the wind and even a storm …… WB2HYW 110
o Two Small Changes You Can Make – To slightly improve your 4A Drake …… VE6TW 112
o Behold a Dandy Noise Defier – Double diode rectifier …… EI4R 113
o An Improved AGC Conception – For better CW and SB reception …… ZL2BDB 115
o Let Your Transformer Toil – In a bucket of oil …… WA0ABI 121
o Having More Fun – With the HAL ID-1 ……W3GHZ/0 126
o Build a Slow Scan Picture Taker – From a Polaroid 230 Copy Maker …… K4PRT 130
o Build the Ferrous Wheel CW Key – And pump your way to satori …… K6QKL 133
February 1973 (#149)
o PC-IC-ID – For FM- RTTY- /M- etc …… K2OAW 27
o The Evolution of Spectrum Management – Radio Club of America Talk …… W4BW 31
o Phased Lock Loop Decoder – For continuous tone systems …… WB6BIH 36
o Toroidal Quadreture Antenna – New wideband antenna …… W4KAE 40
o Active Filter Applications – RTTY …… W1SNN 45
o Frequency Measuring System -II – Design theory and clock …… K5DUS 49
o Repeater Keying Line Control – Squelch tail and time-out …… WB6BIH 60
o SSTV Circuits – A raft of popular circuits …… W9NTP 63
o Two Meter Converter – For a BC FM receiver …… WB6CDU 80
o All Purpose Metering Circuit – Use one meter for the whole rig …… WA0ABI 83
o Are FET’s Really Biased? – Understanding FET’s …… K9VMH 86
o If Your Counter Input’s Low – Here’s an IC way to go …… K4EOE 89
o TR-22 Modification – For higher output power …… W8FJA 91
o Transistor RF Power Amplifiers – Theory – Part I …… W9EGQ 97
o Light Bulb Power Indicators – El cheapo …… WB2GQY 102
o Economy Filters for 75A4 – Still an excellent receiver …… W0IQI 105
o Capacity Measurement – By frequency shift …… W3HTF 108
o Keyer Adaptor – For outdated transmitters …… W1JSS 116
o Gonset Linear Modification – Gonset 201 ……W6HGX 118
o A Time for Everything – A discussion of time …… WB6KFI 125
o IC Protection – Second guess your power supply …… W4ATE 142
\
March 1973 (#150)
o A Fast Scan Facsimile System – Use it with SSTV …… W6WMI 20
o Six and Two Meter High Power – Using a $25 surplus amplifier …… K4EPI 31
o Solid State Repeater Control – Timers, ID, etc …… K2OAW 35
o A Digital Tape Distributor for RTTY – Are you still using motors? Tsk …… K4EEO 45
o The Ample Amplifier – All band, 1200 watts …… K9PYY 50
o Popular SSTV Circuits -Part II – 19 more slow scan circuits …… W9NTP 55
o The Can Scanner – World’s cheapest SSTV camera? …… K4TWJ 69
o Improving the Indoor Antenna System – Using copper foil …… W2EEY 73
o Updating Sorenson “A” Nobatrons – Low voltage power control …… W6GXN 77
o FM Deviation Meters – Gay lib special …… VE7ABK 81
o Time Frequency Measuring System -Part III – Counter …… K5DUS 85
o Another Use for 400 Cycle Transformers – Another use is badly needed …… W0NVM 91
o Bandpass Filter Design – An engineer’s delight …… WB6NWQ 101
April 1973 (#151)
o Low Cost FM Deviation Meter – Lest you deviate from the path of righteousness …… W9HD 21
o Taming Those Hot 500 MHz FETS for 2m FM – Shrews you what you can do …… K1CLL 27
o Two More Two Meter Amplifiers – Louder is better -right? …… WB4DBB 31
o “Mini” Repeater Control System – Part I – This is the mini -the maxi is a whole book …… WA0ZHT/l 35
o Getting Your Repeater Licensed – Difficult -but possible …… W2NSD/1 51
o Low Temperature Techniques for Radio Amateurs – Talk about solid state …… W1GNZ 55
o Choosing Your FM Rig – Stop missing all the fun …… W2NSD/l 59
o Europe on 2 Meters a Day – Europe is rife with repeaters …… W2EEY 63
o Scanning Adapter for FM Transceivers – Hear all -know all …… WA4WTX 73
o The RCA CMU 15 FM Transceiver – Getting on 450 el cheepo …… WB6BIH 79
o 2 Meter FM at 14,000 Feet – How to be hated in six states simultaneously …… W7DXX/1 83
o Simple Lightning Detector – Undetected lightning is bad stuff …… K2OAW 85
o Citizens Band Alignment Aid – Is this an April Special? …… WA5SWD 87
o Heath Desk Top Calculator – How did we ever do without it? …… WA9FPP/1 90
o Transistor RF Power Amplifiers -Part II – Only way to go …… W9EGQ 93
o Repeater Economics – All that nice stuff costs money …… K4ADL 105
o International Signal’s 100 Milliwatt Rig Revisited – Hey, let’s have more articles on this gadget! …… WB6QAM 109
May 1973 (#152)
o Mobile Burglar Alarm System – Belt beeping burglar baffler …… WA4SAM 19
o The Burst Box – A real tone-ic for the FMer …… WA7NMO 25
o Power Inverter w/Sine Wave Output – For people with short extension cords …… W7OXD 29
o 450 MHz Preamp – 10 dB gain on the receiver is a lot easier than on the transmitter …… WB6BIH 33
o Roof Mounted VHF Whips – Phacts and phallacies …… WB6HYD 39
o LED Readout Crystal Switch – Make everyone green with envy …… WA3AJR 47
o Voltage limit Sensor – Car battery warning light …… W4UXJ 53
o Build a Digital Clock with 19 inexpensive ICs – Is that round clock doomed? …… WA6QVQ 55
o Portable Use for the HR-2A – Judi Repeater approves of this …… W2KPE 61
o Fixed and Mobile 2m Antennas – How to make your car look ridiculous …… WB8HEE 63
o Two Meter FM Transmitter – Roll your own …… WB6BIH 65
o Mini-Repeater Control System, Part II – Have you read the book yet? …… WA0ZHT 71
o Audio Boost for Mobile Transceivers – Mobile audio booster IC …… W2EEY 81
o 6m 5W Amplifier – For the kitchen table builder …… K1CLL 83
o Hand Transceiver Madness – Got yours yet? …… W2NSD/1 89
o QRP on 180 kHz – Tried 1700m yet? …… W5SOT 93
o Solid State Automobile Burglar Alarm – Blows horn or siren …… WA1KON 97
o Circuits , Circuits, Circuits – Keep ’em coming …… WR1AAB 105
June 1973 (#153)
o Simple Generator for 222 MHz – This three transistor oscillator and attenuator will enable you to tune up a 222 receiver or antenna and measure the sensitivity. There are still new worlds to explore -try 222 …… K1CLL 23
o Miniature 80 and 40 Meter Antenna – Brand new idea for the experimenter – don’t, say there isn’t anything new that amateurs are working on. Get cracking …… W2EEV 29
o UHF Output Meter – Accurately measuring rf power at 444 MHz is a problem …… K2EE 37
o FCC-Approved Repeater Application Info – Makes nice reading on a sunny afternoon …… FCC 46
o Color Slow Scan Television – A system for direct viewing of color slow scan. What next? …… K4TWJ 49
o RTTY Autoswitch – Great for two meter RTTY …… K2YAH 51
o 40 Meter Transmitter – Hybrid rig for inexpensive fun on 40 CW. Good Novice rig ……WB6BIH 55
o Polar Mount for Moonbounce – Don’t all rush to make this up, okay? …… W4KAE 59
o The Urban Quad – Tri-bander you can make good performer …… K3MNJ 63
o Understanding Reflected Power – Oddly enough, very few engineers understand it. Read and confound the experts …… W5JJ 65
o The K2OAW Counter Improved – Improved accuracy, timebase check, burnout protection , etc …… W9CGI 70
o The Perfect Summer Job – A 73 work-ethic special. Combine hamming with a vacation and get paid for it …… WA8MLG 75
o Double Coaxial Angenna – Get Increased bandwidth with this all coaxial folded dipole …… W2EEY 79
o Non-Falsing Tone Decoder – A circuit that keeps illegal transients from tripping your COR …… W1ELU 83
o Calibrated Signal Strength Meter – Did you calibrate your antenna to the meter or vice versa? …… VE3CES 85
o Portable FM Battery Pack – An easy way to fake, it if you can’t afford a hand unit …… K4YKB 87
o An In-Circuit Ohmmeter – Tackle squeamish circuits with this low current device …… W6HDM 91
o Amateur Rules and Regulations, Part I – Who will bet that they’ll change while we’re in midstream? …… FCC 95
July 1973 (#154)
o Tuneable Oscillators for 2m FM Receivers – ICs are a lot cheaper than crystals …… K1CLL 21
o Basic ATV System – A T-44 transmitter strip does most of the work …… WB0FQF 29
o High Performance Small Yagis – Mount a supercharger on that 2 element beam …… WA3CXG 33
o Multiple Output Frequency Standard – Lets you calibrate your receiver in .0625 Hz increments …… W4HSA 37
o Digital Identification Unit – Be ready when you’re asked to produce your papers …… K1OZS 39
o Topographic Repeater Maps – Docket 18 8 03 forces us to run a free ad for the government …… USDI 50
o DX Mobile Installation – Add horsepower to an otherwise low octane signal …… K4TWJ 53
o 450 MHz Power Divider – Easily constructed matching system for stacked arrays …… WA3AXV 57
o The Role of the FCC – Does it serve and protect, or unnerve and reject? …… W2NSD/l 59
o CW Filters, Bared and Compared – Complete with scope traces and bandwidth specs …… W6AGX 65
o 85 dB Gain 2m Antenna – Don’t submit this one to the FCC …… K1TKJ 71
o Compromise Multi-band Antennas – Do you expect to work all bands without compromising? …… W2EEY 75
o Spinoffs from NASA – Our undercover agents are stopped by nothing …… WB2ICV 83
o Grid-Dip Tuning the Quad Antenna – Something to do on a hot afternoon …… VE3GSP 87
o Amateur Rules and Regulations, Part II – This month Jason and the Argonauts battle seasickness in the Aegean …… FCC 91
August 1973 (#155)
o Single Band Log-Periodic Antennas, Part I – Easier than falling off a tower …… W4AEO 21
o Squeaker for Tone Burst Entry – Any tone, any time …one tiny chip …… K9KIC 27
o VHF Power Amplifier Design – If you remain unconvinced about building that amplifier, maybe you ‘re holding the magazine upside-down …… K6RAD 31
o 220 Goes CB – A new game plan: Upgrade the Mississippi Blacksnake to Class E …… FCC 37
o The Amateur’s Intercom – For duplex QSOs with the kitchen …… K1CLL 39
o Novel 160 Meter Antenna – A wraparound antenna remember the hula hoop? …… W2JKI, K2EE 43
o Solid State SSTV Monitor – Features magnetic deflection, noise immunity, tuning indicator-here is the monitor you’ve been waiting for …… WB8DQT 45
o Low Cost Frequency Counter – A counter like any other …but this one is cheap…… Harper 57
o VOM Design – A simple VOM with cheap available parts …… WA3JBN 63
o QRP Transmitter – Get that 1609.344 kM per Watt award with this simple two transistor rig …… WB6BIH 65
o The Numbers Game: DXCC – Where do you fit in the charts? …… WA9VGS 69
o Solid State Exciter for 450 MHz – K1CLL rides again …… K1CLL 71
o Talk Power and FM – Don’t forget to give a ten count while you read this article …… W2EUP 79
o Amateur Rules and Regulations, Part III – This month the Ancient Mariner fearfully eyes the 220 Albatross on page 37 …… FCC 87
September 1973 (#156)
o 73 Visits Jordan – Wayne smuggles in the dynamite Mideast dope …… W2NSD/l 12
o JY Amateur Listing – A pre-callbook item …… JYl 26
o Repeater Logic System – Another Step toward the sentient repeater …… WA1OMS 27
o Single Band Log Periodic Antennas, Part II – Assembly details, installing trees etc …… W4AEO 37
o 2m Calibrator and Alignment Aid – Handy if you’ve built a tune able adaptor for y our FM rig …… K1CLL 43
o How to PLL – Look where you’re going first …… W9KXJ 47
o The Patch Pad – Soften the job for a hard-working working repeater …… K4MOG 51
o S-Meter for the HW-7 – The HW-8 unveiled! …… WA6QYU 53
o OSCAR 6 Inverted Doppler – Possibly related to the inverted dupplet …… W0MJS & W0LER 57
o L’eggs Injector Antenna – An Easter egg hunt in September? …… W1SNN 61
o 2m Converter – One more factor for your conversion table …… WB6BIH 65
o An IC Keyer – For the properly spaced-our CW freak …… VE3GSP 69
o Measure Antenna Impedance – With a modified SWR bridge …… W2AOO 73
o Potentiometers – How to vary a variable resistance …… Centore 77
o Easy Antenna Pruning – Ever break your leg falling off of a graph? …… W3GAT/2 79
o 73 Visits Sentry Crystals – A visit to Fort Knox …… W2NSD/1 81
o Amateur Rules and Regulations, Part IV – This month Ahab finds that he has wandered into a local bait shop …… FCC 85
o The QSL Manager – and how to handle him …… W4NJF 91
October 1973 (#157)
o Converting the G.E. Pocket Mate – Transform a pocket transceiver into a pocket transceiver! …… WB4DBB 13
o Frequency Measurement at Microwaves – Be prepared for equipment with tiny knobs …… WA9VFG 17
o 2m Front End Using One IC – A high performance 6 transistor design …… K1CLL 21
o Instant Replay for your Tape Recorder – A tape recorder is a must for Slow Scan …… W6FPO 29
o 2KW PEP Building-Block Linear – Module design leaves room for improvement …… W2EEY 31
o Yet Another Wattmeter – Did you build your first one yet? …… K5CXN 39
o Metor Legerdemain – Pull a rabbit out of a broken VOM …… WB2PAP 43
o Europe’s DX Repeater – Is 2m WTW a future possibility? …… W2EEY 49
o Two Band Balanced Dipole – Another high-wire act for your backyard …… W2OZH 57
o A Digital “HI” Generator – Even a Chevrolet can learn CW …… WA6JMM 61
o Oscillating Ring Counter – October foolishness …… Weinstein 67
o Frequency Multiplication with Transistors – Bill Hoisington turns down his thumb at the standard circuits …… K1CLL 69
o Amateur Rules and Regulations, Part V – This month the watertight compartments of the Titanic are explained in detail …… FCC 77
November 1973 (#158)
o Getting Started On 450 MHz – Hurry before someone proposes a Class F! …… K1CLL 21
o Getting Started On ATV – Simple circuits for the beginning ATVer …… WA7NMO 26
o NI-CAD Battery Life-Saver – Insures cold starts …… K2ETN 35
o The Heath GR-110 Scanning Receiver – A plus for Heath …… W3WTO 39
o Is Your Autopatch Legal? – Or are you just pretending …… W3YVV 49
o Frequency Aperture Modulation – FAM makes another appearance …… W2BSP 53
o VOM Range Extender – You can do more than just lengthen the test leads …… W2EEY 59
o AC Power Supply for Portable Rigs – You can’t operate portable 100% of the time! …… WA3EEC/1 63
o A Radiating Loading Coil – An indoor antenna that might pass as a weird lamp …… W0FEV 65
o Peak/Notch Audio Filter – A worthwhile addition to your rig …… W6AGX 69
o Power Failure Protection – Make sure brown out doesn’t spell burnout …… Ives 73
o 160 Meter Antenna Coupler – An improper antenna is no longer an excuse for staying away from 160 …… W2LT 75
o HT-100 – 1Watt. PL and Touchtone – Buy your way to happiness …… K6VGP 77
o Independent Sideband – SSTV/SSB – Narrate your Slow Scan program …… W9NTP, WB8DQT 83
o The Elusive 100 Countries – This month’s tale of International intrigue …… VE3CEA 87
o Complementary-Pair Audio Amplifier – Transistors get lonely too …… W5SOT 93
o Amateur Rules and Regulations, Part VI – This month the Bounty sets its sails to the south hoping to find breadfruit …… FCC 103
December 1973 (#159)
o IC Code Speed Display – Check the FCC’s code machine with this one …… VE1BU 25
o 2 Meter Linear Amplifier – In case you want to try Moonbounce …… W4KAE 29
o A Simple IC Keyer – Nice 3 IC Keyer …… K2BLA 37
o Precision Waveform Generator – Sine, square and sawtooth waves from one IC …… VE3GSP 41
o Helical Resonators – Rise from the depths of QRM …… W0PSF/2 49
o Sensitive RF Voltmeter – Check out your rig’s emotional problems …… WA6NIL 53
o The Greenie – The first half of a possible Christmas article …… K1YSD 63
o Rapid Receiver Control – Using touch switches …… W2EEY 67
o Increase SSB Efficiency – With this simple mic preamp …… WA6QJU 71
o Identifying Unmarked ICs – Cash in on surplus bargains …… WA6IGU 73
o The QSL From BY Land – QSL QRT…… KA6IX 79
o Sequential 2-Tone Decoder – For the bust repeater that needs more than single tone access …… W3JJU 81
o A Satisfying Minimum Regulator – A throw together regulator for quick projects …… KL7EVO 87
o Take-Apart 2 Meter Beam – Folds down like an aluminum Christmas tree …… W1BHD 89
o Making The Most of Auto ID – Autocall anyone? …… K6HKB/1 91
o Choosing and Using an Electronic Calculator – Some outlets carry 10-15 models! …… K2OAW 97
o Optimum Design of CW Filters – Electronic and physiological factors …… W6AGX 107
o Amateur Rules and Regulations, VII – This months a crowd gathers to witness the sailing of the Spanish Armada …… FCC 117
1974
January 1974 (#160)
o Wide Range Audio Oscillator – Cheapskate special – uses one 50 cent IC …… W2EEY 25
o Another ID Generator Circuit – Mobile, fixed; for FM, SSB and RTTY …… W9DTW 29
o Expanded Range Line Monitor – 110 -120V ac full scale metering …… WA0ABI 34
o Oscillators on 432 and 1296 MHz – Inexpensive UHF experimenting …… K1CLL 35
o Simple Active Filter – For CW, SSB, RTTY, etc …… W6AGX 41
o Video Tape Recorders – Better’n movies …… WB8HEE 43
o Inexpensive Decimal Counting Unit – For all those uncounted decimals …… VE3CWY 47
o Whistle up a QSO – With tape cassettes …… K1YSD 55
o 10 Meter Tuner – Beginners’ construction project …… K1CLL 57
o FAX Converter Using IC’s – More Fax facts …… K6LJY/7 63
o Simple Touchtone Pad – Using the 1035C3A pad …… WA3EEC/l 13
o The $1000 Antenna System – Conservatively estimated …… WA6CPP 77
o Special Considerations for Digital Design – Line noise, spurious signals and crosstalk problems …… K3VKC 83
o Selectable Voltage Power Supply – Beginners project which will be useful for years …… WB6BIH 81
o Three Wavelength Loop for 20M – 4 dB gain …… G2FXQ 89
o Visiting Regency – With a look at the HE 220! …… Staff 91
o A Versatile Code Practice Oscillator – Two IC’s …… Wilson 93
o Wiring Harnesses Made Easy – In jig time …… VE4RE 97
o How to go Mobile – Though compact, imported or married …… WA1GNX 101
o Unbreakable Antennas for the TR-22 – For when you break your whip …… K9KIC 105
o Leading Zero Suppression for Digital Displays – Getting rid of nothing …… W1DMU 107
o Automatic Touchtone Dialer – Using tape cassettes …… K4TWS 111
February 1974 (#161)
o Understanding the Slow Scan Monitor – It’s awfully simple …really …… K4TWJ 20
o Integrated Circuit Audio Amplifiers – IC Audio Amplifiers Handbookette …… Kenney 25
o A Simple Sweep Generator for Monitor Scopes – Very, very simple …… WA2HNJ 32
o New Regulations (1938) – A dated article …… K2PMM/F8 34
o Quick ‘n Easy 15 or 20 Meter Vertical – Using el cheapo TV masts …… KH6HDM 37
o Telephone Control and Monitor System – Operate your rig by phone …… K1CLL 41
o Modifications to Heathkit GC-l005 Digital Readout Clock – You’re out of luck if your day has only 23 hrs and 56 mins in it …… WA0KHV 50
o Cook a Better Circuit Board – Don’t forget to use a dash of cardamom …… WB4MYL 52
o A Variable Q Audio Filter – For CW …… WA4DCN 54
o Another Blown Fuse Indicator for Low Voltage – Using an LED …… K6HKB/l 57
o Building with Ten-Tec Modules – A 20/40m QRP transmitter using modules …… WB2WYO 60
o Simple Audio Preamp – How to increase your intelligibility and live a fuller and more useful life …… W6JDD 69
o An Integrated Circuit SWL Receiver – Hey, here’s an easy and fun project! …… W1GOG 71
o 432’er Final Assembly, on the Air – At last! …… K1CLL 77
o Transistor Keying Circuit – You’ll never use relays again …… K6OLG 90
o Low Cost Seven Segment Readout – Interfaced with Nixie driver …… WA2AOO 95
March 1974 (#162)
o The Sensuous Cavity – An easy way to cure spurious emissions and a host of other ailments …… K8JNE 17
o Sexton’s Laws – From the First Book written in the Second Epoch …… WB6CHQ 25
o Constant Current Sources – Question of the month : What should the ideal op amp have? …… K3VKC 29
o Easy Calculations – (Let’s see, 2 + 2 = 5 …ed.) …… K6TXR 31
o The World of X-Band – Starring: Ray Milland, Diana Van Der Vlis and Harold J. Stone …… KlCLL 33
o An IC Preamp That Doubles as a Tone Generator – Read about this startling identity crisis …… W6GXN 45
o Increased Speed for the K2OAW Counter – As if it weren’t fast enough already …… W4CUG 49
o ABI Notes – Tip, Tip, Tip, Tip, Tip, Tip, Tip, Tip, Tip, Tip …… WA0ABI 53
o A Six Meter Transceiver – You can convert the June 1973 (page 12, 73 Magazine), CB construction project to 6m using thisarticle …… W5QWY /0 61
o Macro-IC-Ology – A Blowup of an article …… W3KBM 67
o How the Communications Receiver Began – Overnight success hasn’t gone to its head …… Moore 69
o The Truly Great Ham – (Ahem, recognition at last …ed.!) …… Sargent 75
o Initial Generator – This does not necessarily have to be your first generator …… W8JIX 77
o Regulated Oscillator Screen for the ART-13 – A surplus article …… WA9IHV 79
o Estimating Power Transformer Ratings – If you’re really finicky don’t read this article …… W6FPO 80
o The Quiet Maker – Shhhh!!! …… W2EEY 81
o Frequency Netting of the Older Motorola FM Units – Go out and buy an old Motorola FM unit so you can read this article …… WA0GUD 85
o The AM 1187/TRC on 450 MHz – Better buy one of these while you’re at it …… K3ZKO/AFA3ZKO 91
o Using the Drake R4B Receiver as a 2m Signal Generator – Wow!!!! …… W5ACK 93
o FM Conversion of G.E. Low Power Industrial Transceivers – Get out your checkbook for this one, too …… WB4MYL 95
o Amateur Rules a nd Regulations, VIII – This month finicky Balboa sets sail to discover the Specific Ocean …… FCC 98
April 1974 (#163)
o Delayed VOX for Repeaters – Kachunker filter …… WA3VXH 17
o FM Autostart – Will start you, a recorder, or all Hell …… WB2VRW 21
o New Breed on 2m FM – Make big money as a license consultant …… K2PMM 25
o Black Box Frequency Converter – MARS, CAP, etc. -all with your ham transceiver? Yup! …… W5JJ 35
o How to Make the How-TOs Work – Big news for flaccid brains …… W4RMD/9 51
o 2m Hybridized Transmitting Converter – VHF SSB the easy way? …… WA0PFL 55
o Testing RF Properties of Some Common Insulators – How to fill up some time …… KH6IJ 62
o Operating From a Sauna Bath – No sweat, you say? Balderdash! …… WA4NXC & W4YYF 63
o Control Panel for your Scanning Transceiver – Giving your scanning transceiver some head …… WA4SAM 67
o CBer’s Glossary of Amateur Terminology – 73 likes to help CBers in every way …… K4ADL 74
o A Tuning Hint for RCA FM Equipment – By the numbers …… WA9FGP 77
o Rock Solid Subaudible Tone Generator – Using a crystal and dividing down …… WA8YDC 79
o Amateur Rules and Regulations, IX – Dramatic Conclusion: At long last our journey over the high seas has come to an end. Where’s the port? …… FCC 87
o First U.S. Licensed Remote Controlled Repeater – See the cover then read this story …… K6BIG 93
o 1974 Repeater Atlas of the World – The entire world in 5 pages of small print …… Staff
May 1974 (#164)
o ICs Upgrade the CD Ignition System – A B+ article …… W1KNI 17
o Adding dBs to the Audio Compresser – Expanding upon new ideas …… W2EEY 21
o Finding a New Home for the Mobile Rig – Some hams will go to any lengths …… WA8QNR 27
o Interference Suppression for Amateur Boat Owners – Let us not forget our Maritime Mobile friends …… DL5KS 31
o Heath HW-202 – Review of a very popular rig …… W3WTO 37
o Simple Mobile Alarm System – There’s beauty in simplicity …… K6SUB 39
o Reducing Mobile Noise – Stop turn signal noise – drive in a straight line …… VE3FGS 41
o Newtronics CGT-l44 Antenna – Try one of these and gain a good antenna …… K4TWJ 43
o Another Burglar Alarm – Add this one to your car, too – be safe in case your other one is stolen …… WA2OJT 45
o Two High Grain rf Stages in One IC for 2m FM – Two for the price of one! …… K1CLL 47
o OSCAR Special Converter – Build it quick – last chance to hear OSCAR 6 …… W2EEY 53
o Toward Mobile Security- You pays your penny – you takes your choice …… WA1JOS 59
o Improving the Pearce-Simpson Gladding-25 Bimini VHF – It’s not what you do – it’s the way how you do it …… WA4DXI 61
o Putting Yourself on TV – Overnight stardom can be yours …… WB8HEE 65
o Catching the 2m Streaker – Another route to stardom …… WB0FKZ 67
June 1974 (#165)
o Poor Man’s Quad – The Adventures of George, The Antenna Maker …… W6SUN 17
o Reconciling the Long Squared Quad – Developing a new type antenna …… W4KAE 27
o Antenna Load Indicator – Whoops, there goes another swisher! …… W5JJ
o Matching – The poor little match girl and her coathanger …… WB2PAP 37
o Remotely Tunable Antenna Coupler – Watch out, Johnson …… W2EEY 45
o A Practical Ground System for 160 – Makes a difference! …… W6FPO 51
o Wide -Range Antenna Tuner – For wide range antennas …… VElTG 55
o Old Antennas and New Baluns – Build a double zepp …… W2EEY 59
o A Multiband Ground Plane – 10-40 meters …… WA8IYL 63
o Mod Quad for Frustrated Cliff Dwellers – The old hidden antenna game …… WN3QBK 65
July 1974 (#166)
o Modern 4-1000A Linear – At last -a use for that 4-1000A lying around in your junkbox …… K8UIR 17
o “Free” Batteries for TT Pad Power – 73 lands another great article …… W3WTO
o The Scotch Transistor – Hoot Man, you don’t have to throw it away after all …… WA9UFG 31
o Poor Man’s Universal Frequence Generator – Only after you build it …… W2EEY 33
o Universal AFSK Generator – An article of cosmic importance …… K6IQL/N0ZIP 37
o Cheap 10-mmute Timer for the Shack – Price does not necessarily indicate shoddiness …… WB2VRW 47
o Low Frequency Phased Array – Here’s one to satisfy all you 80m buffs …… W2OZH 49
o DC Isolation of RF Amplifiers and Modulators – Another great one from Bill …… K1CLL 55
o Little Bill – A neat little transmitter …… W9WBH 63
o 3000V DC Supply – Here’s something to do after you finish your 4-1000A …… K8VIR
o Diagrams – At long last, an easy way to tell the difference between a resistor and a tube …… WB2PAP 73
August 1974 (#167)
o Directional Wattmeters and Novel SWR Meter – Build every thing in this article and give your retflecto meter a rest …… G3PDM 17
o FETS on 450 MHz – Nobody can build an rf amplifier like Bill …… K1CLL 27
o GDO To Find C – A unique 1000pF reader …… G3OGR 35
o Super Trimline for 2 – Maybe no one will notice if you borrow the extension in the bedroom for a while …… K4TWJ 37
o R-390A Modifications for Improved Performance – A great buy – if you can get it …… W6ONL 39
o R-392 On The Air – A great buy -if you can get it (sounds familiar) …… W7UGV 47
o Super Selective CW Tracking Filter – You’ll flip over this one …… W2FSO 49
o An Audible Voltmeter – Here’s one you’ll really enjoy …… WA0AQC/9 55
o Midland 2m Base or Portable – A review of interest …… WB4MYL 61
o Cheap and Easy 230V AC Power Supply – A must for everyone …… K5LLI 64
o Universal Power Supply – Five power supplies for the price of one …… Calvin 65
o Review of Grounded Cathode Linears – Learn all about the mysterious class X amplifier …… W7CSD 67
o Slide Rule Rules – After reading this 10 to .1 you’ll no longer have to guess about where to put that decimal point …… K8GOU 72
o SSTV Scan Converter – Sensational Article – Don’t Miss It! …… W0LMD 73
o House Cleaning The Logical Way – Perspicacity all the way – that’s what I always say …… W3HPX 85
o ID Timer – After you build it you’ll probably sit and watch it for hours …… WB4MYL 95
o Fail Safe Switching Improved – Get out your October 1971, 73 – here’s an update …… Hunt 97
September 1974 (#168)
o MOSKEY -Part 1 – Win contests with this programable keyer …… W3HPX 19
o A Severe Weather Warning Net? – Why not with this monitor? …… W9DTW 27
o A Agitable – Make better p.c. boards …… WA0ABI 41
o LXpedition – Peripatetic Edgar Bently’s to Luxembourg …… G3BID 43
o Six Meter DXing – You can make WAS on 50 MHz …… WA6CPP 49
o Questions – 2m quad feed -SX101 -GS680 …… W9EGQ 51
o Heath 10-103 Mods – Ten more calibrated sweep speeds …… McCarthy 55
o Mono Reproducer – Absolutely foolproof circuit …… K9VXL 57
o 6m QRP Transmitter – Using an OSC module …… WA8DEB 59
o RF Speech Clipper – Inexpensive, yet effective …… W2EEY 61
o Lecture Beamed to Class – Another use for amateur radio …… Lemert67
o My Favorite Band – 80m- What’s yours? …… W0SII
o The Audio Bishop – Bishop noise limiter circuit …… W6AJZ 71
o A Visit to 4U1ITU Geneva – You too can be rare DX – just bring your ticket …… WA3KEY 73
o Measure Your Voltage Rating – Set arc gaps and stuff …… W9SIA 76
o 120V Variac on 220V – Simple, when you see how …… W4GD 78
o Weather Satellite on Your SSTV – With a converter …… WA8DQT 79
o Do Something About – Now you can read it again …… K3BNS 85
o Nostalgia – 40 and 50 years ago! …… WB6JNI 93
o A Universal IC Tester – Almost …… WB4MYL 95
o Making It Small – Emphasis 2m …… K1CLL 98
o An Easy Tower – Build it Yourself …… W4VUO 103
o Infinite Attenuator – Low-cost VHF test unit …… K1CLL 107
o Lightning in a Bottle – Electronic flash tubes …… W2FEZ 109
o Modernizing The Select-o-ject – Still one of the best cw filters …… WA6KPG 114
o Profile -W5RU – A very famous DXer …… K6GKX 121
o It Happened in Mexico – And it was worse than Montezuma’s revenge …… W9CNW 127
October 1974 (#169)
o The FCC As Seen By – The old Roshoman bit …… W6EIF 20
o Introduction to Micro Transistors – Build this 6m transmitter …… K1CLL 24
o Build a 2m Frequency Synthesizer – Part I …the theory …… W8KBC 31
o Repeater Government Guide – Laws and by-laws …… W5OJZ 37
o The Heath HWA 202-1: Any Good? – Reader test report – did he like it? …… W3WTO 41
o Simple Power Supply for Digital Work – Actually, it’s complicated …… K2OAW 43
o Flood Emergency! – Hams save the day, as usual …… VElAIL 45
o The GDO, the VOM, the XYL – Each has its place when repairs are called for …… W5ZKL 50
o Selective Calling Via Repeaters – With this touch pad decoder …… W5LCT 51
o How To Stop Antenna Rip -Offs – Removable mobile vhf antennas …… K2PMM 55
o Two Meter Lids -Exposed! – Not thee or me -right? …… WB8JYR 61
o Two Meters Ain’t Twenty – How to lose friends -easily …… VE3FEZ 64
o Mighty Motorola Meterer – Those 80 D’s are cheaper ‘n rice boxes …… K4HHI 65
o AM on Repeaters? Holy Moly! – Heresy in San Mateo …… K6QFO 67
o Water pipe Antennas for 2m – Correcting alotta bum dope that’s out …… WA1KJU 69
o Is Your Deviation Wrong? – Well, set it right -simply …… VE3FGS 75
o Get More Zap With This 2m Antenna – The wonders of the coaxial dipole …… VK2BAU 77
o Build This Two Transistor I-F Strip – Use it with hf and vhf converters …… K1CLL 79
o San Francisco: A Big Moment! – Repeater history is made …… WA6AXV 86
o Win CW Contests With Moskey – Part II -Memory better than an elephant …… W3HPX 89
o You Can Tune Oscar 7 – On 3 bands with one receiver! …… W3HUC 98
o Exciting New Carbon Mikes – High output with excellent quality …… K2PMM 99
o Kill The TVI Demon – With this low pass filter …… WB4MYL 102
o How To Say It In Ham – Primer for XYLs …… W4SCF 104
o A Foreign Language! – New zest for your QSOs …… WA1GFJ 108
o Make 6m Come Alive – With this simple p re-amp …… K9VXL 111
o Are You Wasting RF Output? – Anode vs power output tuning …… G3BID 114
o WWV Time With Any AC/DC Radio – 10/15 MHz with this one-tube converter …… K3SCW 116
o Can Your Extension Cords Start A Fire? – Handy guide to overload prevention …… W6DDB 117
o Prevent NCX-5 Burn out – Simple mod and tube replacement …… WA1FBE 119
o An “Invisible” Antenna That Works – For apartment dwellers and travelers …… G3ZCZ 121
o Fast On The Trigger SSTV – Automatic vertical trigger circuit …… W9HTF 124
o The HT-144B: Is It Really Good? – Reader report on new HT kit …… W1HCI 126
o Cover : First Beefeater Ham – May manufacture gin poles …… G3LEX 130
November 1974 (#170)
o Dipole Antenna Tuning …… WA4RSX 20
o Latest Counter Update …… K2OAW 26
o Who Needs A 5V Supply? …… WA0ABI 36
o How To Win A Big Contest …… VK4SS 37
o Digital Wind Direction Indicator …… W2AOO 40
o Build A 2M Frequency Synthesizer …… W8KBC 44
o Experiment in Terror …… WA9VLK 66
o A Wind-Proof 20M Beam …… VE7DKR 67
o Tones and How to Touch Them …… K1NUN 71
o The Double Stub Matching System ……WA6CPP 73
o How You Can Teach Novices …… WA9NJZ 75
o Build This Digital SWR Computer …… W6OTG 80
o A Real Hot Front End For Six …… K1CLL 88
o Build A Basic Bridge …… WA0ABI 95
o MOSKEY – Part III …… W3HPX 97
o August 73 Converter Update …… W0LMD 105
o Beep – Beep – Beep – Beep, You’re High …… W2OC 108
o What’s Really Inside The Regency HT? …… W2WTO 116
o Would You Believe 187,000 Phone Patches? …… K7NZA 124
December 1974 (#171)
o Making Nicads Behave …… K2OAW 24
o Zillions of Parts For Nothing …… WB9MQY 36
o C31 or Bust! …… DK8SQ 39
o Wind Indicator For Your Shack …… W5ZG 41
o Modified Weather Satellite …… WB8DQT 48
o A Logical Keyer? …… K2QKO 53
o The Perils of Novicehood …… WA1SNG 58
o Can FM Simplex Be Solved? …… WA6CPP 65
o Meters And Their Faces …… W5IUR 70
o Slow Scan Tape Secrets …… K2ULR 73
o Simple Probe Logic Check …… WA3SWS 76
o Public Service Band Converter …… W9DJZ 78
o Tuned Diode VHF Receivers …… K1CLL 81
o Automatic SWR Computer Part II …… W6OTG 86
o EI Cheapo Tower …… W7OXD 89
o Hamshack Goodies …… W3WTO 94
o Hamfest Wheeling And Dealing …… Flint 96
o Rhombics And Their Worth …… WA6CPP 100
o DX Chasing …… W4GKF 104
o Heathkit GR-78 …… W9KXJ 109
1975
January 1975 (#172)
o Using The W. U. Desk Fax …… K7QXL 25
o How to Find the Satellite …… WB8DQT 31
o RTTY Secrets …… W3JJU 42
o The 432 Receiver …… K1CLL 46
o The AN/GR R-5 Receiver …… W6JTT 64
o TTL a s a Decoder Mode …… W9CGI 57
o Simplifying Satellite DXing …… WB5ASA 77
o Blow a Bundle on TTLs …… K2OAW 81
o The R-511, A Real Surplus Bargain …… W6JTT 86
o How Not to be a Loser …… W9KXJ 91
o The Versatile Transistor Checker …… W5WGF 94
o SSTV Video Analysis …… WB8DQT 99
o An All-Band VHF Receiver to Build …… WB2AGJ/2 105
o Keep Amateur Radio a Secret …… K4ADL 113
February 1975 (#173)
o Sneaky Fast Scan Monitor for SSTV …… W2FJT 26
o Behold! -Super Key …… K6ZN/W6GXN 31
o What Time is the Next Satellite? …… WB8DQT 46
o CQ OSCAR 7 …… W3HUC 54
o How to Find a Satellite …… WA4WDL 62
o Measuring Heating Oil Usage …… K2OAW 65
o Mod Squad Hits the SB-102 …… WA2KHK 68
o FM vs. AM – which is really better? …… VE3DNR 70
o Build Your Own Repeater – for only $365 …… W1HCI/W2EDN 76
o The Heath SB-103? …… K9WQY 90
o Get into a Grey Mood -Generate …… W2FJT 93
o Instant Neutralization …… WA0ABI 96
o Phoenix Hams Show How It’s Done …… K7NZA 99
o Oh, the Lost Art of Diplomacy …… WN7KUD 108
o Further Adventures of the Bounceless Switch …… W6GXN 111
o Is Automated CW Possible? …… DJ0HZ 115
o 100 Countries on SSTV …… W8YEK 120
o Joys of the One Night Stand …… W7CSD 123
o KOX for CW …… WA5KPG 129
o Quick Capacitor …… W2BJB 137
March 1975 (#174)
o Can a 7 foot 40m Antenna Work? – The small loop …… W0PJG 33
o The Secret of Antenna Gain – (Shhh -it’s capture area!) …… K2OAW 39
o Twinlead Phased Array – Two elements on 40m – or any other band …… WB2NQT 47
o The Incredible Capacitive Antenna – Now: an 18″ allband antenna …… W0KGI 49
o An 80m Phased Array – Switchable directivity …… W2OZH 52
o A Coax Amplifier for 450 MHz – 6 dB stacked collinear …… W5GDQ 58
o Invisible Antennas – Why ask for trouble? …… WA8BHR/5 61
o Another Look at the Swan Beam Antenna – Testing …again …… WB6PDN 66
o City Dweller ‘s Multiband Antenna – An inverted Windom? …… W4ATE 69
o 40m Inverted Vee Beam- Satisfying …… WA7OET 72
o The Unofficial Standard Standard – Quack, Rot, Vice? ……W7IDF 74
o The Mystery of Antenna Radiation – Is it still a mystery? …… VE3DDS 81
o The Double Inverted Vee – A remarkable wire beam …… VK6IZ 91
o A Short and Sweet 160m Antenna – Build this simple portable topbander …… W2NYU/ WA1JJV 93
o Pete’s Dipole – A better method of feeding …… WA4NWM 95
o The Magic of the Log Periodic – Special Book Supplement …… W4AEO 97
o Avoiding Traps with Antennas – Three great multiband designs …… Staff 126
o A New National Amateur Radio Society for Canada – Introducing C.A.R.F. …… VE3VCA 129
o Mobile SSTV Breakthrough – 73 discovers the cassette recorder …… W2NSD/1 139
o Yet Another Etching Technique – Something fishy here …… Anderton 143
April 1975 (#175)
o Build This $50 HT …… WA5RON 17
o Proof of the Extraterrestrial Repeater …… WB6IQS 21
o Scanning with a Synthesizer …… WA0AQO 23
o Poor Man’s BFO …… WB9BNF 36
o The Torrid Toroid …… Harding 37
o Voltmeter Switch Quiz …… WA0ABI 38
o WR3ABC – The Inside Story …… K3BEQ 42
o Eight Function Repeater Controller …… W3JJU 46
o Nicads – A Shocking Expose …… WB6JPI 51
o Preamp for the TR22C …… WB4SNC 53
o Ma Bell vs. Foreign Attachments …… WB2PAP 56
o Buyer’s Guide to HTs …… Staff 61
o The Two Dollar Amplifier …… W8DYF 71
o Lifting Ma Bell’s Cloak of Secrecy …… Whipple 76
o The Identalert …… K2PMA 89
o Try Attache Case Mobile …… W3WTO 94
o Two Metering a Hustler …… W3HTF 96
o Can Those Split-Split Channels Work? …… WA6ITF 101
o Saving the 15m Quad – By Converting it to 20m …… Staff 105
o The Rime of the Ancient FMer …… K1NUN 108
o A 2m Collinear You Can Make …… K4NOC 111
o Do You Know This Man? …… WB4UAN 113
o A New Q5er – The R-l1A …… W5SOT 116
o Now – A 5/16 Wave Antenna? …… K3VNR 117
o ICOM, T he New VHF Giant …… Staff 124
o New Life for the SX-111 …… W1HEO 139
o Try 160 CW With This Transmitter …… W6JTT 142
May 1975 (#176)
o IC Call Sign Generator …… VE3GSP 10
o Faxing SSTV …… K6IGC 15
o Fat Nixies for Chronometer Nuts …… W2AOO 23
o Latest K2OAW Counter Update …… WB2UKP 30
o How to Become a Famous Author …… K2OAW 33
o Playing with Power on 432 …… K1CLL 40
o More Fun with the IC-230 …… WA6VJR 45
o Does Ether Cause Gravity? …… W6NLB/7 49
o Mother’s Day Special : The Violet Tester …… W2AOO 52
o The TT-63A Regenerative Repeater …… WB4APC 55
o Oscaring Your FM Rig …… WA4VUH 58
o Inside Ma Bell …… Whipple
o Getting Your Canadian License …… VE3ZS 71
o In Pursuit of the Perfect SSTV Picture …… W2NSD/l
o AC Power for the HW-202 …… W2AOO 79
o Now What Have I Done? …… VE3FEZ 81
o A Hefty 12 Volt Supply …… Anderton 81
o ICM Kit 2m Converter …… KlCLL 90
o Updating the Pocket Mate …… WB4DBB 97
o You Can Work 75m DX …… WA6CPP 101
o The Postage Stamp Squelcher …… K6JM 103
o The T-278/U, Surplus Gem …… K0DAS 108
o Disaster in Honduras …… Staff 114
o Buyer’s Guide To 2m FM Transceivers …… Staff 120
June 1975 (#177)
o Me Friend …… W7IDF 17
o Homebrew this SSTV Monitor …… WA9MFF 22
o El Cheapo Superbeam …… WA6NLQ 31
o The Smart Alarm …… WA6KBL 37
o An Intimate Look at 160 Meters …… W2NYU 43
o RF Power at 432 …… K1CLL 48
o The Minirepeater …… WB4DBB 55
o Inside Ma Bell …… Whipple 67
o Dirt Cheap Tunable I-F for Converters …… K0VQY 81
o 6m IC Rx …… K1CLL 85
o All Band Frequency Marker …… W1KNI 88
o Protect Your Gear with a Latching Relay …… Ives 93
o A Case for CW …… W0FEV 97
o ID Timer …… WB4MYL 108
o Build an 11 dB Coatrack …… WB0HKB, WB0DQC 111
o Front Burner for Six …… WB4DBB 115
o A Digital Dial for Your Receiver …… W2AOO 119
o Three on Fifteen …… WA5CNG 123
o More Weather Satellite Pictures …… WB8DQT 128
o Solid Gold PR: Washington! …… K4SHE 135
o Tit for Tat and Others …… W4ATE 139
o Presto! Transistor checker from VOM …… W8WLM 144
o Easy BFO Project for All Wave Receivers …… WB4KTY 148
o How to Put on a Professional Slide Show …… WA3AJR 155
July 1975 (#178)
o Rare DX via Oscar? …… W1FTX 18
o Antennas for Oscar – What Really Works? …… W3HUC 25
o An Oscar Preamp that Works Wonders …… W3TMZ 31
o Shoot Oscar with a Satellabe …… K2ZRO 33
o Oscar – A Certificate Hunter’s Paradise …… K2QBW 47
o Where’s Oscar? …… W3HUC 51
o Oscar RTTY Converter …… K9PVW, K9HUI 53
o How You Can Take Oscar’s Temperature …… W3HUC 57
o Really Zap Oscar with this Helical …… WB4VXP 59
o Automating Satellite Reception …… WB8DQT 76
o Eskimo Pie …… W1BNN 90
o FM Alignment Oscillator …… WA3ETD/2 93
o Master Sync Generator …… W0LMD 96
o The Audio Synthesizer for RTTY, SSTV and whatever …… W0LMD 98
o Ham Radio in the Arctic – 1925 …… Douglas 103
o Pack Rat Moonbouncing …… W3HMU 107
o Gee, What’s a Zepp? …… W3WLX 111
o How Gates Work – A TTL Primer …… WB2NEL 113
o Bargain Audio Frequency Source …… WA2CXD 118
o Vertical Antennas for the Novice …… W8HXR 119
o Do Textbooks Prevent Learning? …… Mocking 119
o A Visit to the CB Store …… VE3FEZ 129
o Preventing Regulator Carnage …… Anderton 132
o The Ultimate in Variable Selectivity …… Staff 135
o Phone Patching – A Public Service …… W8HXR 139
o An S-meter for your Swan-250 …… WB4DBB 156
August 1975 (#179)
o The Oscar Zapper …… WB4VXP 12
o Identalert C …… K2PMA 22
o Digital SWR Computer …… K2OAW 25
o RF Feedback, The Experimenter’s Curse …… K1CLL 36
o Surveying the DVM Scene …… W9KXJ 42
o How About a Weather Satellite Monitor? …… WB8DQT 45
o The QRP Accu-Keyer …… WA5KPG 58
o Catenary Suspense …… W1BNN 62
o Copper Rip-Off …… W7SHY/6 69
o Better Results from those Sweep Tubes …… K4TWJ 70
o The Best Logic Yet …… WB5IRY 73
o How to Compact Multiband Dipoles …… VE3GSP 80
o Don’t Feed the Bears! …… Michigan Radio Doctor 92
o The Wonderful Mini-Chronometer …… W2AOO 95
o An Accessory VFO – The Easy Way …… Staff 103
o Modern Non-Morse Codes …… K8BFH/l 111
o Build This Amazing Function Generator …… W6GXN 121
o Charge that KP202 …… VK3OM 141
o So You Want Front-to-Back Ratio? …… K7PVZ 147
September 1975 (#180)
o The Calculating Counter …… Johnson 22
o A Satellite Fax System You Can Build …… WB8DQT 39
o Where is your simplified, sensitive millivoltmeter? ……G3JQQ 49
o Three Button TT Decoder …… WA0EDA 52
o Underground Radio is Dirty Business …… WA3AQS 57
o What’s Wrong with my SSTV? …… K4TWJ 62
o Queen Roger Papa from Hotel Whiskey Seven …… W7IDF 69
o 40m DX Antennas – the Easy Way …… W8HXR 78
o The Oscar Zapper …… WB4VXP 83
o Digital SWR Computer …… K2OAW 91
o Full Break-in at 60 wpm? …… WB6OMT 97
o Odd Problems with an Old Antenna …… W2JTP 100
o The Alligator Squelcher …… WB8EQQ 103
o You Don’t Have a Power Failure Alarm? …… W9DJZ 105
o Portable QRP Power Unit …… W8CHK 110
o You CAN Fix It! …… W0HMK 118
o Precision +10.000 V dc Voltage Reference Standard …… WA6VVL 124
o Building a 135 kHz i-f Strip …… K1CLL 127
o A True Tale of the Faked Fist …… W4ZBE 133
o Adapting Telephone Handsets to FM Transceivers …… WA8LEM 137
o Atlanta 1975 …… W6LJU 140
o ATV on 450 with a T44 …… K0MOC 143
o 0-60 MHz Synthesizer …… Calvin 145
o Bridging the Information Gap …… K3DSQ/4 155
October 1975 (#181)
o Build a Deluxe TTY Keyboard …… K7YPG 22
o Op Amps: Basic Primer …… WB2NEL 33
o Computers are Here – Are You Ready? …… W2NSD/1 40
o 0-60 Hz Synthesizer …… Calvin 50
o A Satellite Fax System You Can Build …… WB8DQT 60
o Dispelling the Mystery of Regulated Supplies …… W1HCI 69
o Digital Logic – Down Through the Months …… WB0DWV 87
o Megger For Peanuts …… Bach 102
o Say, OM, Are You a Computer? …… W2IAT 109
o Digital Clock Time Bases …… W2AOO 114
o Fast Dive on Five …… W1BNN 119
o Introducing the Opdesk …… W8LWS 129
o The 432er Goes Power – Like 1100 Milliwatts …… K1CLL 132
o Ham PR vs Chaos …… WA2KBZ 160
o Busy Hams Benefit Baja …… Patterson 166
November/December 1975 (#182)
o Flip Flops Exposed …… WB2NEL 30
o Breakthrough in Fast Scan ATV …… WB4YTU 37
o Strobing Displays is Cool …… WB4DCV 49
o The Sensuous Tuned Lunch Box …… W2FEZ 52
o Loudest Signal in the World? …… W0SYK 57
o Build a Deluxe TTY Keyboard …… K7YGP/7 63
o Eyes for Your Shack …… W0ACR 74
o Predicting Third Order Intermod …… WA2OKZ 95
o Feedline Primer …… WA1SNG 103
o Caught “Spying” by the Gestapo …… W1BNN 117
o Why Tubes Haven’t Died …… WA5RON 125
o Instant Circuits …… WB5DEP 133
o K2OAW Synthesizer PROM-oted …… W7JSW 138
o Computers are for Hams! …… WA1PAZ 145
o The Unzapper …… WB5DEP 151
o A $1.00 Strip Chart Recorder! …… W6NLB/7 157
o Display Yourself in a Big Way …… W4LLR 186
o Fun City ‘s Surplus Scene …… Bach 191
o Looking Back – Looking Ahead …… WA6ITF 199
o Updating the Heathkit IB-1101 …… WA5OKA 214
1976
January 1976 (#183)
o Clocks -Really Simplified! …… WB2NEL 22
o De-Strain Your Ham-M …… K6BW 26
o Hot Carbon …… W1BNN 28
o An Automatic Dialer for the Deluxe Mobile …… WA4SAM 49
o Zapping Dead Nicads to Life …… K20AW 62
o Plugboard Extender for Under $3.00 …… W3WTO 65
o Eyes For Your Shack …… W0ACR 66
o Build This Digital Capacity Meter …… Chladek 70
o The Computer QSO Machine …… W1HAB 80
o The Solder Master …… K6JM 92
o Stack Your ICs -And Pot ‘Em …… W4CUG 94
o Build This $5 Timer …… VE3FEZ 129
o A $50 Self-Powered Counter …… WA7SCB 130
o How to Become a Troubleshooting Wizard …… K4IPV 138
o Module Kits -A Low Cost Homebrewing Break through …… W1HCI 144
o What’s All the Noise? …… W2DNY 154
o Ham Quiz …… W5UOJ l56
o Saving Ham Radio …… WA4BDW 162
o Patching Tales …… WBHXR 166
o Work a Novice …… W2OLU 171
o Capacitors Unmasked …… K6HKB/l 172
o Why Fight It? …… WA0KKC 173
o Greetings, You Have Been Selected …… K0CBA 176
o Save Money on Coax …… W8HXR 181
o How to Pass Exams …… W8HXR 182
o County Hunting …… W2SDU 192
o 99 Cent IC BFO …… WB5MJT 201
o Empty State …… 202
o The “Little Log” for 40 to 20m …… VE4GS 211
o Using a Bargain Surplus Keyboard …… W6OXP 212
o Improve Your SSTV with the FRAMER …… W2FJT 218
o The Experimenter’ s Dream Card …… K9AIY 222
o Run the Legal Limit with One Shoe …… WA7IEO 226
o We Must Abandon Ship – Help! …… WB4SNC 230
February 1976 (#184)
o Trekkies, Build this Starfleet Communicator! …… WA3AJR 18
o A Synthesized IC Frequency Standard …… Plavcan 22
o You Can Make Photo PC Boards …… Harrington 30
o Adding an Ammeter to Your Car …… WB5DEP 34
o Really Soup Up Your 2m Receiver …… W9ZTK 40
o How’s Your Speech Quality? …… Staff 44
o A Transmission Line Matcher …… W5JJ 46
o ASCII to Baudot Converter …… W6OXP 52
o The Sound of Random Numbers …… WA1GSF 60
o What Do You Want to Count? …… WA7SCB 66
o RTTY Autocall -The Digital Way …… VE6BV 76
o Believe Me -I’m No Expert! …… W2NSD/1 86
o Night DXing on 10 and 15 …… WN2UGO 95
o 60 Hurts Per Second …… WA8GDW 98
o Catch Big Ones – Fishpole Mobile …… W4RHZ 100
o Glitchgate …… WA8WTE 102
o Switch It Off First …… VK3IQ 108
o Improving the FT-101 …… K6ANG 112
o Put Your SB-10 On 160m …… WA2ECI 121
o WH6DBF -K1OXK -W6LZJ …… W6LZJ 124
o Maintenance Musts …… WA6CPP 132
o Alarm Foil Antennas …… WB2NEL 136
o Alarm! Alarm! Alarm! …… WB4MYL 138
March 1976 (#185)
o Adventure …… Bach 16
o Tunable FM Receiver Strips …… WlSNN 24
o Surplus Circuit Boards -A Gold Mine of Parts …… W0FEV 28
o The Perils and Pleasures of Surplus Shopping …… Thompson 30
o Space Age Junque …… W9CGI 34
o A PC Board Bonanza …… WA4LZM/W5SAY 38
o Government Surplus: Is It All Gone? …… WN5NBE 40
o Inherit the Wind …… W2AOO 44
o Stereo -A New Type of CW Filter …… W8KZM 48
o 160m Solid State Receiver …… VK3ANY 52
o Tubes Are Not Dead! …… WA6ITF 56
o Put a Pin Hole in Your Cadillac’s Roof …… Staff 60
o What’s A Computer? …… W1HCI 68
o The IC See-er …… WB4FDQ 72
o Build This Exciting New TVT …… K7YZZ 76
o Magic Fingers for RTTY …… W9CGI 86
o What’s That In Binary? …… W3KBM 92
o The Smart Power Supply …… WA4SAM 96
o Adrift Over Your C’s? …… G3OGR 106
o How to Use Surplus Pots …… WB0NPN 108
April 1976 (#186)
o Yes, You Can Build This 2m Receiver! …… WA7SCB 18
o A Reprogrammable ID …… WA3MSW 28
o Put That AM Rig on FM …… WB6FVW 34
o A Carrier Operated Relay (COR) for Your Receiver …… W7JSW 36
o A $5 100 Watt Amplifier …… VE6OB 38
o Build A 220 MHz Repeater …… WA1UFE 40
o Carrier Indicator for Your Regency …… WA1SNI 42
o Long Distance Call Eliminator …… W7JSW 44
o Repeaters in Paradise …… W3EAG 48
o Simple New TT Decoder …… W7JSW 52
o One IC Tone Burster …… WB6ZUA 55
o The Tuna-Two Traveler …… WlRHN 56
o The Mighty TR-22/15 …… WB4MYL 60
o Inexpensive HF-VHF Frequency Standard …… WA5KPG, WA5QZM 62
o Computers Are Ridiculously Simple! …… Wadsworth 68
o A Versatile TTY Generator …… WA6JMM 90
o Chariots of the Hams? …… WB0FKZ 98
o The PLL -Exposed! …… WB2NEL 102
o The Two-Timer …… Deeds 106
o How Accurate Is Your Counter -Really? …… W6YUY 110
o Gray Matters …… W9CGl 122
o TR-22 Tips …… K9POX 126
o A New Fashion in Hats for the Fun Mode? …… W8FJA 130
o Copper Clad …… W6HGX 134
o Bicentennial Seconds …… WA1DFL 136
May 1976 (#187)
o The Magnificent Sevens Microhelix …… Jacoby 16
o An All band Inverted Vee …… WA5FGC 22
o Squaring the Conical …… Staff 24
o Secret Antennas for Cliff Dwellers …… WA6PXY 26
o The Novice Inverted Vee …… W8HXR 30
o Closed Loop Antenna Tuning …… WA5KPG 32
o The 75-80m Broadbander …… K2VGD 34
o The Magic of a Matchmaker …… W1CEJ 38
o How to Coax Your Antenna …… W6AGX 40
o 40m DXing – City Style …… K8ANG 42
o The Secret 2m Mobile Antenna …… Staff 44
o An Inverted Vee for 160/80m …… K8ANG 46
o The Dipole Dangler …… PY8ZAC/W8VOH 48
o Amateur Weather Satellite Reception …… W88DQT 52
o Scan Your HR212 …… K9EEH 66
o Computer Languages – Simplified …… WB8TUR 70
o Very Cheap I/O – the Model 15 …… Whipple, W5CUD 77
o Code Converter Using PROMs …… K7YZZ 84
o A Nifty Cassette-Computer System …… Staff 88
o Is Digital All That New? …… WA9VFG 94
o The Ins and Outs of TTL …… W1EWL 96
o Build a CW Memory …… WA6VVL 102
o AM is not Dead – It Never Existed at All …… WA1WDS 110
o Is Extraterrestrial Communication Possible? …… K6BW 114
o 5/8 Wave Power for Your HT …… W8KUT 118
o Strobing: Gone in a flash only to return …… W9CGI 120
o It Happened to Me …… WB2HJD 132
o 555 Timer Sweep Circuit for SSTV …… W8KZM 134
o Tech Manuals …… K4ORT 140
o RF and Mod Monitor …… K5JRN 142
o A Failure to Communicate …… WB4YDX 143
June 1976 (#188)
o Super COR – digital …of course! …… WA0BMP, WB0JHS 16
o Touchtone Decoder – using a calculator readout …… W2AOO 26
o Simple Amateur TV Transmitter – at a QRP price …… WB4YTU/WA9GVK 28
o Amateur TV Receiving System – some of what you wanted to know …… WB4YTU/WA9GVK 33
o Glass Arm – the dreaded CW man’s disease …… Bach 38
o Mobile Autodialer – six preprogrammed numbers …… WB9LTA 44
o Autocall ’76 – using a touch tone decoder …… WA6JMM 52
o Build This Lab Type Bridge – and measure transformer impedances …… WB4FDQ 56
o How Those Triangle Things Work – a sort of op amp handbook …… K7YGP/7 60
o Phone Patching ’76 – automatic single frequency patch …… WA1RTD 67
o Two Finger Arithmetic – how computers figure …… W1HCI 84
o Those Exciting Memory Chips – RAMs, ROMs, PROMs, etc …… Fowler 96
o A Morse to RTTY Converter – using a microprocessor …… WB6SQU 106
o Number Systems – a brief history …… W6PZV 112
o ASCII /Baudot with a PROM – for ribbonless RTTY on computers …… W9LNY 114
o Aim Your Beam Right – with a programmable calculator …… WB4GVE 122
July 1976 (#189)
o Handy Dandy Soldering Iron Cooler Offer …… WB4FDQ 18
o Perfect CW – drive ’em crazy with the Keycoder I …… WA9VGS 20
o The Mini-Mite All-band QRP Rig – runs a mighty seven Watts …… WA7SCB 30
o A Fun Counter Project – an invaluable test instrument for under $50? …… Plavcan 36
o Build a FAX from Scratch – then get satellite pictures and other things …… W4NK 44
o Der Repeatermeister – repeater control, with ID …… WA1UFE 58
o Lightning and Thunder and Other Stuff – can J. Bach be a relative of P.D.Q. Bach? …… Bach 64
o Behold the Giant Nixie Clock – using a minimum of new parts …… W4LLR 70
o Creative SSTV Programming – how to put pizzazz into your show …… WB8DQT 76
o Don’t Build This Project – watch for my next …… W8LWS 79
o CW Regenerator/Processor – also has TTL output for digital work …… W6GXN 80
o Dependable Timer – for darkroom, repeater, etc …… W1HCI 84
o What’s Up on 156 MHz? – meet the marine world above 2m …… K3RXK 88
o Oops ! There Goes the Power – keeping digital clocks going anyway …… W4CUG 92
o TT Pad for the Wilson HT – and a belt clip mod, too …… WA1LOU 94
o Power Supply Testing – to save your digital circuits …… Tenny 112
o A RTTY / Computer Display Unit – Baudot, ASCII, TTL, RS232, etc., etc …… Roloff 118
o Your Computer Can Talk Morse – even a computer can learn the code! …… Whitfield 133
o Inexpensive Paper Tape System – using 5 level tape with computers …… Whipple, W5CUD 145
o Gain for Your HT – a half wave whip? …… K3VNR 149
o The Super Transmatch – match almost anything! …… Staff 150
o Simple VHF Monitor – converter for a transistor radio …… W6JTT 160
August 1976 (#190)
o How Do You Use ICs? – fundamentals …… WA2SUT/NNN0ZVB 24
o Surprising Miniature Low Band Antenna – the DDRR low noise antenna (part I) …… Boyer 28
o MINI-MOS – The Best Keyer Yet? – nothing Mickey Mouse about this one …… WA6EGY 38
o The Skinflint’s Delight Breadboard – cheap imitation of a commercial IC DIP board …… K7YGP/7 52
o More PLL Magic – like low frequencies for RTTY …… W9ZTK 56
o The Logic Grabber – selected interval logic tracer (S.I.L.T.) …… WA3TCO 60
o Global Calculations for the DXer – using a hand calculator …… W2IAT 68
o Instant Counter Calibration – using your TV set …… K9POX 70
o Super Simple 450 MHz Rig – go ATV with a $42.50 module …… WB4YTU/WA9GVK 72
o The First Computer-Controlled Ham Station – Grand Prize winner at the WACC! …… WA8VNP 82
o The Which Chip Dilemma! – 4, 8,12, or 16 bits: pros and cons …… Pittman 90
o Meaningful Conversations with your Computer – what those mysterious “languages” are all about …… WB2ZCF 98
o A Baudot Monitor /Editor System program – listing for the 8080 …… Whipple, W5CUD 102
o A Logic Probe You Can Hear – good not only for the blind …… WA6HWJ 106
o How Computer Arithmetic Works – do-it-your self experiments …… W1HCI 108
o Satellite Orbit Predicting – using a pocket calculator …… W1ODI 113
o The Death of Negative (IBM) Logic – some fundamentals of logic design …… W6KYP 116
o And on the Other Side – binary and octalization of decimals …… W3KBM 120
o Build the Safari RTTY Terminal – an active filter modem from Africa …… DL2SX/ZS6GG, ZS6JR 122
o Never Underestimate the NAND – introducing the 7400 quad NAND gate …… WB0JHS 128
o EI Cheapo Signal Tracer – test gear for the cheapskate …… WB8EQQ 148
o FSK with the SB-401 – simple way to get on RTTY …… WA3AJR 150
September 1976 (#191)
o Balloon to Balloon! – another 73 first …… W2NSD/1 20
o The Surprising DORA Low Noise Antenna – part II …… Boyer 34
o Ultrasimple Regulation with New IC – power supply design greatly simplified …… WB0JLS 48
o Can An Indoor Antenna Work? – making the best of a bad bargain …… Staff 56
o 12 Inexpensive Volts for Your Base Station – parts right out of your local Radio Shack …… WA8WVF 60
o A Test Lab Bonanza – using a transistor radio …… WA7SCB 64
o Protect Your VHF Converter – with a novel antenna relay …… WB2NTP 68
o Ridiculously Simple RTTY System – get on the air in one day …… W3KBM 70
o How to Catch a CBer – practical hints …… Fields 74
o A 450 MHz Transceiver for Under $130 – bringing 450 within everyone’s reach …… W1HCI, K1ELT 80
o Space Age Junque II – updating the 348 by 30 years …… W9CGI 84

o PROM Memory Revisited – getting back to May’s CW blockbuster …… WA6VVL 92
o What’s When – timing diagrams …… Craig 104
o Eight Trace Scope Adapter – test accessory for digital timing …… Johnson 108
o The PROM Zapper – build this simple PROM programmer …… WA1UFE 112
o Sneaky Baudot – with an ASCII keyboard! …… W3KBM 115
o Simple Graphics Terminal – using inexpensive surplus equipment …… K1MRK, Ciarcia 116
o Counters Are Not Magic – They’re Simple – getting right down to basics …… WB2NEL 126
October 1976 (#192)
o Build a Weird 2 Band Mobile Antenna – fantastic parking lot car locater …… W6AAQ 20
o Build a Counter for Your Receiver – updating receiver fun …… WA3YGJ 28
o How Do You Use ICs? – part II …… WA2SUT/NNN0ZVB 38
o QRP Fun on 40 and 80 – have a real ball with just 5 Watts! …… K5JRN 44
o The Hybrid Quad – has low windload, expense, hassle …… WB8VCS 48
o Frequency Detector for Your Counter – sounds alarm when set frequency occurs …… W2AOO 50
o Programmable CW ID Unit – for RTTY, repeaters, mobile, etc …… WA6JMM 52
o New IC, for the Counter Culture – simpler counters with less used power …… W4CUG 54
o Is My Rig Working or Not? – build an effective radiated field meter and know! …… K8VIR 56
o Quickie Collinears for 15 and 10 – satisfaction guaranteed …… K8ANG 58
o 500 MHz Scaler – PC boards are available …… K2OAW 62
o Build a Super Standard – goes right down to 1 Hz …… WA7VVC 66
o The Incredible Lambda Diode – you can even make it yourself! …… WB5DEP 70
o Mechanical RTTY Buffer – using a tape punch and a clock …… K5UAR 74
o Have You Used a Triac Yet? – nifty solid state ac relay gadget …… WB9JSE 76
o Another CW Keyboard Keyer – CMOSed for ultra low power consumption …… WA9VGS 78
o RTTY/uP Flexibility – Baudot / ASCII serial/parallel I/O …… Roloff 96
o Blowtorch Your ICs – a bonus from computer surplus …… VE3FEZ 101
o How to Interface a Clock Chip – Baudot, BCD or ASCII conversion …… G8KWR/DC0GK 102
o Hey, Look What My Daddy Built! – six TV game chip can make you a hero …… Ciarcia 104
o A TTL Tester – great for unmarked bargain ICs …… WA9VFG 110
o How to Check Memory Boards – use this simple program …… VE3DWC 114
o The New Ham Programmer – making those confounded uPs work …… W2HBY 118
o The Soft Art of Programming – getting started with BASIC …… Didday 124
o BASIC? What’s That? – the basics of BASIC …… WA1GFJ 128
o Is It the Band or My Receiver? – the microvolter will tell! …… Staff 132
November 1976 (#193)
o Cordless Iron Tips – when you’re up against the Wahl …… K9POX 26
o Bicycle Mobile – cover feature …… WB4SNC 30
o Build a Simple “Lab” Scope – costs less than $70! …… K8JWR 32
o Get on Six with Surplus – the el cheapo RT-70 is a natural …… WA5HLE 40
o The Beam Saver – rotor memory system …… W6YUY 46
o Updated Universal Frequency Generator – extremely versatile test unit …… K3EZ 50
o Who, me? A Pioneer? – some fantastic frontiers are wide open …… W5WGF 54
o The Shirt Pocket Touchtone – auto-patch from your HT or car …… K4TWJ 58
o Put Your Name in Lights – giant nixie message display …… W4LLR 60
o Liquid Crystal Display Guide – for low, low, low power consumption …… WB5DEP 62
o Self-Powered Mi ke Preamp – when you need to SPEAK UP …… WA5KPG 65
o See the World and Get Paid! – merchant marine radio officers: part I …… Hargett 75
o The Wind Counter – the digital wind sock …… W9CGI 84
o The S38 Is Not Dead! – a tale of resurrection …… W6GXN 88
o ID with a PROM – and program it yourself …… W7JSN 90
o The Amazing Inverted L – antenna for 20, 40 and 80m …… K8ANG 94
o Battery Chargers Exposed – more than you probably wanted to know …… W6GXN 98
o How Do You Use ICs? – part III …… WA2SUT/NNN0ZVB 106
o Thirty Years of Ham RTTY – from the Model 12 to the microprocessor …… W2NSD/l 110
o Big Noise Burglar Alarm – lights flashing, horns blaring …… WA3SWS 114
o Dandy Digital Dial Decoder – to control whatever you want …… W9CGI 116
o Weather Satellite Display Control – integrating CRT and FAX displays …… WB8DQT 122
o Ham Time-Sharing is Here for You! – via a repeater …… WB4YTU/ WA9GVK 134
o The Soft Art of Programming – part II …… Didday 140
o OSCAR Orbits on Your Altair – the software you’ve needed …… G3ZCZ 146
o ASCII /Baudot Converter for Your TVT – series or parallel to boot …… Roloff 150
o The Smoke Tester – power supply checker outer …… W7RXV 159
o The Coffee Flipper – and executive decision maker …… WA3VXH 162
o The Man Who Invented AC – Tesla, the greatest pioneer of them all! …… Goldman 164
o Baudot to ASCII – you want to learn programming? …… Borgerson 172
o Baudot and BASIC – an interpreter for a Baudot computer …… W5CUD, Whipple 174
o Toward a More Perfect Touchtone Decoder – Ma’s system can be made to work well …… WA3VXH 178
o Using a Wireless Broadcaster – two good ham uses …… WA9VGS 184
o The Quiet Spy – amateur uncovers spy ring in U.S.! …… Matlack 188
o The Benefits of Sidetone Monitoring – and how to do it …… Staff 191
o Paolo …… W7IDF 258
December 1976 (#194)
o Go Tone for Ten – simple subaudible encoder …… WB6GON 22
o World’s Simplest Five-Band Receiver? – using an AM transistor radio …… K3QKO 28
o How Do You Use ICs? – part IV …… WA2SUT/NNN0ZVB 36
o Hamming 101 – another Cabrillo College pioneering program …… Inman 40
o A Super Cheapo CW IDer – for FM repeaters and RTTY …… K4EEU 46
o The ZF Special Antenna – double-D “beam” …… ZF1MA 51
o CT7001 Clockbuster – the ultimate clock / calendar (for now) …… WB5DEP 52
o Saving a CBer – a new resource for hams …… WA2KBZ/JY9KS 62
o A Ham’ s Computer – CW/RTTY the easy way …… K7YZZ 78
o What’s All This LSI Bunk? – an ostrich’s eye view of the microprocessor …… Leventhal 84
o The Soft Art of Programming – part III …… Didday 92
o Getting By the Friden-8800 Communications Gap – interface made easy …… VE3DWC 100
o New Improved Repeater Monitor – 2 transistors …… WA5RON 106
o Put Snap in Your SSTV Pictures – using a $20 freq standard …… W2FJT 112
o What’ s All This Wire-Wrap Stuff? – talk about cold solder joints! …… K2STV 116
o Exploding the Power Myth – to set the record straight …… W9IK/XE1ZX 120
o Exploding the SWR Myth – to set the record straighter …… G3OGR 122
o Bring a Dead Band to Life – beacon CQer …… WB8BEL 125
o The IC-22 Walkie – portabilization with nicads …… WA1UQC 126
o The Latest in Counters – an inexpensive modularized 50 MHz system …… WA1UFE/8 140
o The 5 Minute COR – simplest yet? …… WA3SWS 152
o See the World and Get Paid! – part II …… Hargett 154
o Watch DX with a Spectrum Analyzer – seeing is believing …… Dewey 162
o DXing with a Weather Map – a new 6m DX technique …… W9CGI 166
Holiday 1976 (#195)
o Build This Inexpensive 400 Watt Amplifier – a pair of shoes never hurts …… W7SCD 22
o How Do You Use ICs? – part V …… WA2SUT/NNN0ZVB 24
o Mobile Smokey Detector – 10.5 GHz: – use it or lose it …… W1SNN 32
o Get a Kid Off the Streets – and into ham radio …… WA1GFJ 35
o Add RIT to Your Transceiver – a must for CW operators …… Staff 36
o Coronaries for Burglars – with this cheapo car alarm …… WB6QDS 38
o Power Supply – versatile …… WB4EHG 40
o DXpedition: Memories for a Lifetime – reflections of HK1TL …… K3JJZ 44
o Secret PC Layout Method – simple and inexpensive artwork …… WA9VFG 46
o Design Your Own QRP Dummy Load – useful beginner’s project …… WA1SNG
o Failsafe Super Charger – multi-rate, too! …… WA3KKM 49
o The Amazing 18″ Antenna for 160m – get on topband simply …… W2NYU/WA1JJV 52
o A Great Way to Lay Out PC Boards – new use for shirt cardboards …… WB4TTY 53
o Replacing the Knife Switch – simple TR system for the Novice …… WA1SNG 54
o $25 for a Connector? You’re Crazy! – do-it-yourself 7/8″ coax connectors …… W9DOR 56
o Now You Can Synthesize – the VHF Engineering approach to 2m happiness …… WB8STQ 58
o IC Audio Frequency Meter – another use for the 555 …… WA5KPG 61
o Hutchinson’s Remedy – the chirpless CW machine …… VE3CWY 62
o The Mod Squad Does the Pocket Scanner – Radio Shack PRO-4 updated …… WB0KZV 66
o TR-22 Mod Squad – king of the modifieds? …… WA2AJO 69
o What Computers Can and Can’t Do – a look at amateur radio’s future possibilities …… WB6OBS 80
o A Ham Shack File Handler – program in BASIC for QSLs, repeaters, etc …… W4BO 82
o Print Your Own Log Book – on your nearest computer …… W0TBL 84
o The Bit Explosion – 8 vs. 12 vs. 16 vs.? …… WB2GFE 86
o Backward Branch – the Easy Way for the 6800 …… Hunter 90
o Superprobe – modern replacement for the scope …… WA6JMM 92
o The Frumious Hexadecimal – for 16-fingered folk …… W3KBM 94
o V-V-V LF Generator – the lowdown …… Hileman 97
o Shoeing Your HT – semi-ideal mobile setup …… WB5HSK 100
o $22 for a Regulator? Never! – a simple car voltage regulator …… WB9JSE 103
o Cash In on the CB – installation for fun and profit …… WA4WOC 104
o Surplus Headset Mod – no tanks needed …… K2EE 107
o Am I Really Transmitting? – red and green LEDs for the TR-22 …… WB8IMY 108
o Dear Gabby – exasperation explained …… W7IDF 109
o The Smart Charger – auto shutoff and all that …… WA5KPG 110
o Simple Remote Ammeter – using a bus-bar shunt …… W7RXV 111
o Micrometers for Microwaves – the art of delicate measurement …… Kehl 112
o Tuning Those Big Antenna Coils – permeability …… W6AGX 127
o The 2m Mod Squad Tackles the Weatherradio – and wins! …… W2OSW/W2UJR 128
o Design Your Own PC Boards – the styrofoam solution …… Adsit 130
o Hamming by Laser – modulating them isn’t easy …… WA7NMO 134
o A 60 Foot Antenna on a 20 Foot Lot – solving a 40m Novice problem Collector and Emitter …… Staff 138
o Dual Voltage Power Supply – about as simple as they come …… W6WQC 146
o Kints and Hinks – for money savers …… VE3FEZ 147
o An Autopatch Busy Signal – when the phone’s already in use …… WA1RTD 148
o Catch Standing Waves – with a tunable trap …… W6AGX 151
o Inside the GLB – a gutsy look at a synthesizer …… WA6CPP 154
o Three for Two – antenna forum …… K4TWJ 160
o How to Bug an Automatic Keyer – putting new life in an old bug …… WB9BNF 162
o A 450 Duplexer – that fits in your car! …… W7JSW 164
o Turn Signal Reminder – setting things straight …… K5AR/7 166
o Do-It-Yourself Ceramics – for tube sockets, insulators, etc …… WA9VFG 168
o Tubes …? – VFO project for nostalgia buffs …… W5JJ 172
o The Hellbox All-Purpose Keyer – keys, mutes, T/R …the works …… W5JJ 192
o Will Silver-Zinc Replace the Nicad? – portable power with a punch …… W6JTT 204
1977
January 1977 (#196)
o SSTV Test Generator – invaluable diagnostic tool …… WA6VVL 22
o How Does Your Rig Perform? – an example using the HW-1 …… W6AGX 28
o Art and the PC Board – new uses for copperclad boards …… W7RXV 32
o The “New” 88 Channel IC-22v – add two switches and flip …… WA6OAZ 36
o A No Hands Telephone Dialer – mobile accessory using a ROM …… WA1PNG 40
o What’s the Best Antenna for 160? – the inverted vee compromise …… W5USM 44
o Ten Meters: Dead or Alive? – a user’s report …… K2HTO 48
o 200 lb. Cookie – microwave repeater control …… WA6ITF 57
o Weather Satellite Simulator – do-it-yourself satellite? …… W9CGI 58
o An Automatic Thermostat – saves 10% on your fuel bill …… W1HCI 62
o Mod for the Heath IO-102 Scope – faster warm-up …… WB4MYL 65
o The UFO Connection – that was somebody fooling around, wasn’t it? …… K8NQN 68
o Go Forth and Multiply! – the space age approach …… W1HCI 76
o How to Find a Forgetful Memory – diagnostics for a thoughtless computer …… VE3DWC 80
o A Super Log – a program for the ham shack computer …… WA7SCB 83
o Short On Memory? – build this 2K board for your 6800 …… WB2ZCF 90
o A Software Replacement for the Muffin Fan – IC cooling program …… WA1FEF 96
o 1,000 WPM Morse Code Typer – for the bionic brass pounder …… WB2DFA 100
o It Works! The First Time! – the Seals Electronics memory board …… WB4WRH 104
o The New Improved TT Decoder Updated – better …… W7JSW 107
o The Polarity Changers – plus to minus …… Staff 108
o Repeaters in New Zealand – quite a few …… ZL2AMJ 110
o A VFO for Sidebanders – 5-5.5 MHz …… VK3XU 116
o Practical Solar Cell Power – great for remote repeaters …… W2EUP 118
o A Simple RC Substitution Box – using a matrix …… Staff 120
o The Compactron Audio Driver – three tubes in one …… WA5SWD 122
o The Junk Box as an Art Form – new use for blown capacitors …… W8GI 126
o The Mod Squad Goes 220 – pub serv receiver for pocket 220 …… WA6JMM 128
o Double Sideband: Something New? – one for voice, one for SSTV …… K7YZZ 130
o Carbonize Your Crystal – a return to the carbon mike …… WB6MXD 134
o How Does Sideband Really Stack Up? – the SSB solution? …… WB6JNN 136
o Son of the Overload Relay – if you can’t buy ’em, build ’em! …… W2OLU 140
o No-Wire Antenna Switch – a clever remote system …… WA0NUX 142
o The Beeper – NASA-type beeping …… WB8VQD, WB8MHG/3 144
o Ham Phone Answering Service – leave messages …… W6GUU 148
o Dear Good Buddy – the perils of radio …… W7IDF 152
o SWR Myth Exploded Again – how does swr really affect signal strength? …… WA1JFU 156
o Dirt Cheap Regulation – virtually freebee …… W3GAT/2 158
o A Vest Pocket QRP Rig – if you have a big one …… K5JRN 160
o Where You Can’t Solder or Weld – joining dissimilar metals. …… WA4VWY 162
o Exciting New Touchtone IC – make phone calls with your HT …… WA0CKG 164
o Revisiting the COR – improvements on the April 76 model …… W7JSW 166
o The Mighty Magnet Mount Antenna – the price is right: zilch …… WA1PDY 168
o A 15.75 kHz Oscillator – simple TV test unit …… XE1CMB 170
o Behavior Mod for the HM-l02 – pretty simple …… W3VT 172
o Antenna Magic – good advice on antenna fundamentals …… WB0HAF 174
o See Yourself Talk – build a sideband monitor scope …… VK5YH 178
o The Hidden Charger – simplest charger yet …… WB8IMY 180
o IC Compressor-Expander – why go only halfway? …… Staff 182
o Measure Your Wasted Power – how much are you losing in your feedline? …… Staff 184
February 1977 (#197)
o Give That Professional Look to Your Home Brew Equipment – win prizes …… McClellan 28
o You Already Have an Atomic Frequency Standard – here’s how to use it …… WD8ASL 32
o Give The Hamburglar Heart Failure – car alarm system …… WA5KPG 36
o Contest Special Keyer – has short but adequate memory …… WA2KUO 38
o The Chintzy 12 – a junk box wonder …… W1OOP 40
o You Can Sound Better With Speech Pre-emphasis – a simple circuit which will work wonders …… Staff 42
o Are You Really Insured? – time to read the fine print …… W9KXJ 44
o Getting a Patent -Is It Really Worthwhile? – how to do it, if you really want to …… W2WLR 46
o Keeping The Wind Down – timer for your mobile rig …… WB8AZP 50
o SSB: The Third Method – bet you can’t even name the first two …… WB0JXY/0 52
o The TTL One Shot – another digital building block …… WB8YJE 56
o DVMs Get Simpler and Simpler – wait’ll you see the MC-1405! …… McClellan 60
o Instant PC Boards using new Color – Key technique …… Minchow 64
o 72 Computerized Satellite Tracking – the needed software …… WB0JHS 72
o Building The Polymorphics Video Board – the voice of experience …… WB6JKM 78
o RTTY Goes Modern – using microprocessors …… WB6QFA 82
o How to Use Those Old Teletypes – computer operation with a 60 mA machine …… K7YZZ 88
o Drive More Safely with a Mobile Dialer – hold 4 or 8 phone numbers in a PROM …… W7JSW 102
o Talk About DX WOW! – you just never know …… W7IDF 112
o An Automatic Be Squelch – another use for your 2m Squelch …… Minchow 114
o Tune Up a Random Wire – world’s simplest antenna for 80-15 …… VK6DX/VK6ZEH 124
March 1977 (#198)
o Pitcairn Island …… VR6TC 28
o How Do You Use ICs? – Part VI …… WA2SUT/NNN0ZVB 36
o Low Voltage Power Supply …… VE3CWY 38
o QLF? Not With the Great Lakes Sideswiper! …… W6VX 44
o The Capacitor Comparator …… WB4MYL 49
o Logical Storage for Logic …… Stanfield 50
o CB Can Do Some Things Better …… Norman 56
o A New Breed of Voltage Regulators …… WA7ABV 62
o High-Quality Video Display …… WABVNP 72
o Save Time with a Micro OS …… Ferguson, Ferguson 90
o PROM Message Generator for RTTY …… WB4EHG 94
o FCC Approved Microprocessor …… K8NQN 100
o How Counter ICs Work …… WB5IRY 106
o Inexpensive Variable DC Supply …… W9VZR 110
o The History of Ham Radio -Part 1 …… W9CI 112
o Remember the Windom …… W8HXR 118
o The Agonies of Tower Raising ……WA2CGA 126
o The Speedy Audio Counter …… W4JYW 130
o Versatility Plus for the HW-202 …… W1JLI 132
o The Boomless Microbeam …… Staff 134
o Making Your Own PC Boards -Part I …… Smith 136
o Announcing the PCF …… WA6PTM 148
o The Happy Flyers …… WB6CQW 164
o 10 and 11 Meter Predictions …… Nelson 168
April 1977 (#199)
o Shoot the Moon! …… K3BPP 44
o Frustrating The Thieves …… WB0GGT 46
o Automatic Autopatch Release …… WA1RTD 52
o Emergency 911 System …… WA2RXQ 54
o The Downspout Vertical …… K8ANG 55
o RTTY? What’s That? …… WA6CPP/WA7PEI 56
o Do-It-Yourself Photosensitizing …… KL7AE 57
o Making Your Own PC Boards -Part II …… Smith 58
o Curing Mobile Noise Miseries …… G3BID 64
o An Intelligent RTTY Station …… K7YZZ 72
o Interrupts Explained! …… ZL1TRM 76
o CW for the 6800 …… WA4TMZ 80
o The Super Clock …… WA1UFE 86
o Add Class to Your Mobile …… WB8HEE 90
o The Final Feeder …… WA9OZC 91
o What About Surplus Nicads? …… W9JTQ 92
o The History of Ham Radio -Part II …… W9CI 96
o Wind Your Own …… K8VIR 100
o Discriminator Output for the HR-2A …… W2KPE 101
o The Phantom Exposed …… Bach 102
o Retire to Ham Heaven …… K0WTM/OA6CV 106
o Hamming the Buggy Sweepstakes …… WA2UDS 114
o Taming the Wild Beta …… W3KBM 118
o A Combiner for Your 2m Whip …… ZL2AMJ 119
o Tile Carbon Marvel …… W1SNN 120
o The Minicom Receiver …… K4DHC 136
o Those Illegal CB Channels …… K8ANG 150
o The Real Truth About SWR …… WB5IAM 155
o Improving the Dipole …… Staff 156
o The 60 WPM Conversion …… WB2MPZ 158
o Digital Autopatch …… W4VGZ 166
o Harness the Wind …… WA1LET 173
May 1977 (#200)
o Build the World’s Simplest Keyer – uses 555 timers …… Ring 46
o Stop That Autostart – mods for the ST-6 circuit …… WA5EVH 47
o Predict the Weather! – a complete satellite receiver …… WB8DQT 48
o Learn A New Language – try CW …… WB0KTH 52
o The History of Ham Radio – part III …… W9CI 54
o The Oily Resistor Watteter – how to put 20 W into a 1 W resistor …… WA1PDY 57
o SSTV Slalom Game – you don’t need a sports car …… K4TWJ 58
o Computer-Controlled Thermometer – take OSCAR’s temp with a micro …… WB9LSS 66
o Computerized RTTY Takeover! – Digital Group cassette to TU conversion …… K7YZZ 70
o Let BASIC Control Your Next Contest! – with Extended Tiny BASIC language …… Whipple 76
o Satellite Zapper – effective antenna for weather birds …… WB8DQT 82
o VHF Noise Snooper – track down annoying pulses …… WA6CLZ 84
o Understand Your Pet Rock – tips on crystal oscillators …… K1CLL 86
o TTL Techniques – bypass those glitches …… WB5IRY 89
o Sending HI – on the hooter …… W8LWS 90
o Build a DDRR for Your Mobile – this one won’t blow off …… W5UKL/0 92
o Headphone Jack Adapter …… WA0VHX 94
o Automatic Taping Unit – for repeaters, logging, etc …… ZL2AMJ 98
o Let’s Use English – for a change …… WA1GFJ 99
o The Ham Radio Classroom – sure beats study hall …… W4LLR 100
o CB to 10 -A Legal Alternative – part I: bandplan and crystal info …… W4NVH 106
o Save Your Old Speakers – how to remove the beehive …… Miller 109
o Beware the Compressor! – some pitfalls to avoid …… WB5QGI 110
o Matching Output Transformers – sort out unknown impedance taps. …… Miller 111
o Stop Timeout! – build this 10 minute ID timer …… K3VTQ 112
o Have You Tried Television? – it’s easier than you think …… WB4KTY 116
o Quick Vertical – for 20 and 40 …… WB0KTH 117
o Try Power Saver Logic – a guide to CMOS applications …… WB5DEP 118
o HF Bands Expander! – eliminate splatter to gain operating room …… Staff 126
o Fight Inflation! Build It Yourself! – tips on planning construction projects …… W3KBM 144
o Wilson HT Mods – heavy duty p.s. required …… K4MKX 148
o Try These IC-230 Mods – improving a popular transceiver …… WB6GTM 152
o CB to 10 -A Legal Alternative – part II: conversion data …… W6RCL 162
o All-Electronic SELCAL – uses a UART for versatility …… WB2MPZ 166
June 1977 (#201)
o Two Meter Scanner – for the IC-230 …… K3JML 46
o Try the Mini-Timer – prevents HT timeouts …… WA2UMY 48
o High Frequency Utility Converter – handy test rig for any shack …… K4DHC 50
o RTTY Scratchpad Memory – after this, try a UART …… VE3GSP 54
o Build This CW Filter – darned good …… VE3EXA 55
o The London Bus Tuner – effective for short antennas …… Staff 56
o The W1BB Story – a visit with the king of 160 …… WB1ASL 58
o Ten Watts on 2 – it’s possible with this rock crusher! …… WA6NCX/1 64
o UHF SWR Indicator – 1296, anyone? …… W8DMR 68
o At Last! A 10m Band Plan – requires a CB radio …… WA4MFT 71
o Event Timer With Memory – double check gravitational laws …… WA3VPZ 72
o Sheet Metal Brake – build microwave components …… W6QIR 76
o The Easy Ammeter – current news …… VE3FEZ 78
o Try a Conduit Vertical – low angles are great for DX …… WB9DVV 80
o The IC-PC Connection – convenient and cheap …… WA6OAA 81
o An 82523 PROM Programmer! – now build those projects using one! …… WB2CZL 82
o Practical PS. Design – do it right this time …… WA6JMM 84
o Yaesu FRG-7 Impressions – take note, swl fans! …… W5JJ 96
o SSTV Meets the SWTP 6800 – modulate video with a micro …… K6AEP 98
o Aim Your Antenna With a Micro – beam heading BASIC program …… W4PWF, WA2TMT/4 108
o Regulated Nicad Charger – don’t cook ’em! …… K7HKL 117
o Complete Repeater Control System – all that’s missing is the computer …… W4VGZ 118
o Transmission Line Primer – in case you don’t know everything …… Murphy 124
o Things Remembered – ever heard of an 807? ……W8LUX 126
o Digital Bargain Hunting – tips on surplus computer goodies …… W8KBC 148
o More Channels for the IC-22S – using dip switches …… WA4VAF 152
o Try a Scandie-Talkie – build a scanning HT …… WA6NCX/1 156
o Current-Saver Counter Display – multiplex those LED’s! …… K7YGP 174
o Instant QSO Recall System – gaining peer respect …… W4GKF 177
o New PC Techniques Unveiled! – dig out your old chemicals …… WB5DEP 178
o How Do You Use ICs? – part VII …… WA2SUT/NNN0ZVB 184
o Uncle Sam’s Surplus List – and how to get on it …… 192
July 1977 (#202)
o Motorcycle Mobile …… WA4LWY 40
o Inside the Bird …… W6YUY 44
o Introducing Autotrak! …… W9CGI 46
o A Battery Voltage Monitor …… Hawkinson 52
o The Morse Clock …… WA1MXV 54
o Hunting Noise …… W6RVP 58
o CMOS Oscillators …… WB5DEP 60
o A Dial for the FM-DX …… W2PQG 63
o Robot 400 Scan Converter Details …… WB8DQT 64
o Bounceless TT Decoder …… WA5ACA 71
o Hams Profit From CB …… Norman 72
o Patch Up Your 101 …… K7VUA 76
o The History of Ham Radio -Part IV …… W9CI 78
o Dipole Designer Program …… K7SBK 82
o Software Control …… WA8VNP 88
o QSL Tips …… Barrack 97
o CB to 10 -Part III …… VE7CHI 98
o CB to 10 -Part IV …… WB4EQU, Norman 101
o CB to 10 -Part V …… K5UKH 104
o World’s Smallest Continuity Tester …… Miller 105
o Open New Frontiers! …… WB6JNN 118
o Digital Synthesizer …… W9CGI 124
o Selecting a Frequency Counter …… McClellan 128
o Build A Multiplying Prescaler …… K3JE/2 132
o Phone Patch Tips …… WB6MXD 138
o Impedance Matching …… WB5HEQ 140
o Digital Clock Fail-Safe …… WB6HJQ 168
o Interest in Mail Order? …… Anderton 170
August 1977 (#203)
o Dual Rhombic for VHF-UHF …… W8DMR 24
o Microwave Waveguide Details …… Moak 28
o Centerfed Specials …… K4MDK 30
o Recycle Your Receiver …… W9VZR 32
o Build a Double Bazooka …… K4KI 36
o Dirt Cheap Directional Array …… WA4BKO 40
o Instant PS Regulation …… W3MR 41
o Take Cover! …… WB5ASA 44
o Introducing the Intenna …… Norman 46
o The Zeppy Vertical …… K5GP 47
o A Cure for Antenna Self-Destruct …… W9TKR 48
o Quick Ante nna Insulators …… WB9JXU 49
o Raising A Tower? …… WA7URL 50
o Remote Rain Gauge …… K9EEH 51
o Super Loop Antenna …… W2FEZ 52
o Rock Bottom 2m Antenna …… W8FX 54
o Antenna Gain Facts …… W5OBR 55
o The 8JK Array Revisited …… W3ZVT/4 56
o Tower Installation Techniques …… W9JT 58
o An Ultimate Invisible Antenna …… WB8MSV 59
o Mountaintop Special Antenna …… W9VZR 60
o Fiery Endfed …… WA6NCX/1 61
o Build A Vacation Special …… W8FX 62
o Apartment Antenna Specials …… WA2ALT 64
o Build a Unique Timer …… WA3AJR 66
o Cooling Your Relays …… K8ANG 71
o A Look At Soviet Test Gear …… W6JTT 72
o Surplus Goodies Are Still Around …… Moak 74
o The Touchtone Connection …… WA4BZP 75
o Build a Phone Exchange …… Moore 76
o Build A Brute Power Supply …… WB4QLW 78
o Drake Touchtone Review …… WA1JGG 79
o Marine Radiotelephone Conversion …… K8EXF 80
o Solder Soldier …… W1ZOA 82
o When the Lights Go Out …… WB5ASA 84
o Ten-Tec Mods …… KL7IBQ/8 96
o Computer Logger …… WA1UOU 100
o Troubleshooting A Micro …… WB4KEO 102
o Super DVM …… WA5VQK 108
o Build a kW Linear …… W6DL 112
o Build A $2 Drill …… K7AGI 120
o Unique Power Supply Tester …… W9HDA 122
o Instant Spares …… W4ATE 123
o Light Up Your Bench …… WA3VGT 124
o Hang Ten …… K8ANG 125
o Using the Atlas Transceiver …… Staff 146
o PC Layout Tips …… WB9LUI 152
o Radio Equipment Insurance …… WA9PDS 154
o Information Management System …… K4MDK 156
o CW Keycoder Improvements …… WB0QFR 159
o Heath HW-2021 Review …… K4JEM 160
o The First Step …… W2FEZ 166
o All About SCTS …… K6LUA 168
o Rotary Autopatch Dialer …… WA1MXV 172
September 1977 (#204)
o A FAAR-OUT DXpedition …… WA6YOB 25
o So You Want to Get Into RTTY? …… W9IF 28
o Design An Active RTTY Filter …… K2OAW 38
o Moving Display RTTY Readout …… WB8SWH 44
o RTTY SWling …… WA2MOT/WT2AAG 52
o RTTY Local Loop …… WB5IRY 59
o Try the RTTY Reader …… W3JJU, Cannon 60
o Organize Your RTTY Pix …… W2PSU 66
o Build A RTTY Message Generator …… WB9CNE 74
o FSK for the Drake …… WB8DMC 78
o Baudot to ASCII Converter …… VE4CM 80
o Digital Group RTTY Micro …… K2AOU 98
o RTTY Test Station …… W2FJT 104
o The World’s Cheapest Calibrator …… W9SS 108
o RTTY With the KIM …… K4GCM 110
o Build A Meter With Class …… WA4LJL 112
o FSK for the FT-101 …… W6OJF 113
o Build A Drift-free T.U. …… VE7DBK 114
o Noise Rejector …… WB6ZYK 116
o RTTY CRT Tuning Indicator …… W9IF 118
o Cassette-Aided CW and RTTY …… Staff 122
o A Practical 2m Synthesizer …… WA3SYI 146
o Buying Surplus …… W2OLU 151
o RTTY RKB-l Revisited! …… W9IF 158
o Mobile Antenna Tips …… W2FEZ 160
o Super Wilson …… K4TWJ 164
October 1977 (#205)
o Communicate On 10.25 GHz – with a simple transceiver …… WA3ETD 26
o Home Brew Tilt-Over – the water pipe special …… W4MEA 30
o Minimize Feedline Loss – UHF buffs, front end center! …… W2STM 32
o How About 6 FM? – it’s easy with a modified HE-50 …… W3KBM 34
o W.A.S. -Easily! – catching the last few …… W7FGD 38
o Fool the Wire Wizard – a computer would have helped …… Simmons 42
o Ultra Simple Diode Checker – for grab bag specials …… K4GOK 44
o Beat the PC Shortage – build (glue) your own! …… Stanfield 48
o Identify That Transformer – tips for using boat anchors …… Tenny 51
o Subaudible Tone Encoder – access those closed machines …… W4NFR 52
o Build A ComCoder – versatility for the IC-22S …… K5UBM, WB5WSG 60
o Attache’ Case Portable – Bond would like it! …… N4AL/WB4SCN 66
o Build A Beeper Alarm – if staying in touch is important …… WA4SAM 68
o Try Your KIM-1 On RTTY – CUL on your computer …… WA5DXP 88
o S. D. Sales Z-80 Review – quality at a good price …… WA2INM 94
o Title Your Pix With A Micro – a useful SSTV accessory …… K6AEP 96
o Mastering Network Operations – everything you need to know! ……WB4EZM 104
o Try A Trapped Dipole – save copper and coax! …… K4IFH 107
o Liberate Your Wilson HT – who needs nicads? …… K2HUF 108
o Novice Antenna Specials – tips for that first antenna …… W2FEZ 110
o Sound Operated Relay – for the ultimate security system …… WB8DQT 114
o Traffic Handling Explained – a lost art? …… WB2YKG 118
o The Third Hand – how many times? …… Miller 120
o Vehicle Security Systems – protect your rig …… WB5DEP 122
o One Cent Channels for the IC-22S – inflation fighter! …… WB2CBC, WA2HGQ 150
o The Missing Length – phantom IC-22S channel …… KL7IEP/1 151
o Design A Circuit Designer! – with special plug-in boards …… Staff 152
o Sensitive Meters Saved …… W6GXN 153
o Big Burt In Amarillo – bootlegger nabbed! …… Staff 154
o Right Way, Wrong Way, Navy Way – or the 73 way …… K6DZY 156
o Living With the Family Ham – planning births, etc …… WA4WZL 158
o Add Jazz To Your Tempo – with a few simple mods …… WB8ZBJ 160
o Interested In Television? – how to get started …… WB8DQT 164
o Simple Electronic Siren – it’s loud! …… K4DHC 176
o Digital To Audio Decoder – for the blind operator …… Pacholok 178
o Synthesize Yourself! – practical experiments …… W1HCI 182
November 1977 (#206)
o Build The Omni-OSCAR! – practical omnidirectional antenna …… K2OVS 24
o Get Set For OSCAR 8 – details on the new bird! …… W3HUC 28
o Build An OSCAR 2m Transverter – make QRP days a success! …… W2GN 32
o Predicting OSCAR Propagation – not always simple …… G3IOR 34
o Try OSCAR Mobile – the ultimate DX test! …… W2GN 40
o Tic Tac Touchtone – a new mentod! …… W9CGI 44
o Visual OSCAR Finder – nice side effects! …… WB2BWJ 50
o Cheap Ears For OSCAR – an effective satellite antenna …… W9CGI 54
o Track OSCAR With Your SR-52 -requires the PC 100 option …… W6UIX 58
o Try A T-R For OSCAR 8 – turnstile over reflector system …… W9CGI 62
o Track OSCAR In Real Time – with your HP-67 calculator …… W9lJ 64
o Logical Thoughts About OSCAR – meaningful to computers! …… OA6AD 66
o OSCAR DX – a new challenge …… W3TMZ 72
o OSCAR Frequency Relationships – new, where is my downlink? …… W1ZAW 76
o Calculate OSCAR Orbits – with your HP-25 calculator …… VE7BGX 80
o CB to OSCAR – from 10 to the sky! …… W9CGI 82
o Track OSCAR 8! – step-by-step method …… K2ZRO 86
o Build A 2m Power Amp – good for OSCAR uplink ……W4MNW 96
o Build A General Purpose Preamp – uses common components! …… W4NVK 98
o Receive CW With A KIM – now, if only the FCC …… WB3GCP, WB8VQD 100
o Build This SSTV Pattern Generator – micro-controlled, of course! …… K7SBK 106
o Super Baud Bumper – for your SWTP 6800 …… WB4GXE 116
o QRZ -P-K4! – relax with ham class …… W9CQD 120
o Digital Timer Goes Mobile – battery power keeps it trucking! …… K7QCM 122
o Straining the Wind – simple wind speed indicator …… Staff 135
o Find That Meter Resistance – with this simple bridge …… N2RG 136
o VE6 DXer Tells All! – what to do all winter …… VE8NS 144
o Remote Speaker Mike for Your HT – this one’s the Wilson …… W2DNY 170
o Split Your IC-22S – adding splinter frequencies …… WA6OMH 172
o Remote Monitor for Your Scanner – complete with lights …… K1CCK 174
o Electronics Study Guide – remember when..? …… Wilson 176
o Low Cost Tone Decoder – for repeater control …… WB0VSZ 178
o Hufco Counter Kit – report from a happy user …… WA2LPB 182
o A Single Tone Can Do It – simple tone control system ……W7JSW 184
December 1977 (#207)
o Inside Ten-Tec – QRP innovators …… K4MDK 34
o The History of Ham Radio – part V …… W9CI 38
o Try BCB DX! – when you’re tired of twenty …… WB2BJH 42
o Build An Engine Analyzer – use your scope! …… WA6THG/KH6 46
o More Repeater Control Devices – control unit/audio interface …… W7JSW 50
o How Do You Use ICs? – part VIII …… WA2SUT/NNN0ZVB 56
o Finally! A Practical Discriminator! – metering system, that is …… K4GOK 62
o A Kilowatt Alternative – try a gain antenna …… WB0KTH/4 66
o All About Transceivers – Novices, take note! …… WB5ASA 68
o German Amateur Procedures – and repeater information …… W8CM/5 72
o The DA4FB Story – American repeater in Germany …… WB4EWX/DA1KD 78
o Decode Morse – with an 8080 …… WB9KPT 92
o Futureshot – Just around the corner …… K9KIC 98
o Try A Micro Contest Logger – the 6800 does it all …… KH6GMP 102
o Computerized Global Calculations – finding the best way to Pago Pago …… VE3EKR 106
o Micro Meets JANET – meteor scatter, anyone? …… W5HK/9, WB9WXM 108
o Run, Sheila, Run! – real-life radio control …… WB0IFF 114
o CB to 10 – part VI: antenna suggestions …… K5UKH 120
o CB to 10 – part VII: convert a TRC-11 …… WB8CLF 122
o Battery Backup for Digital Clocks – don’t miss a second …… WA2EJT 123
o Roll Your Own QSL Cards – originality for rare ones! …… G3WDI 130
o Glide On Six – radio control primer …… WB3BQQ 134
o More IC-22S – add a programming switch …… K0HPF 138
o Amplitude vs. Frequency – poor man’s spectrum analyzer …… Staff 140
o How About An Auto CQ? – generate some 10m activity! …… K4TSY 142
o SSB For the “Frog” – tame the croak …… W5JJ 144
o Beat the Books – study hall special …… WB9YKR 145
o Clocking Those Clock Kits – check out the MK-03! …… W6SWZ 148
o Digital Signal Source – TTL signals for counters, micros …… K7HKL 150
o Regenerated CW – CW: as you like it …… Staff 152
o High-Band Your KDK – monitor the other half! …… W2PMX 177
o The Rescue – rest-life drama …… WA6LJL 178
o Welding Rod Special Antenna – for seamless contacts …… WA5TSJ 179
o Tanks A Lot! – inductor calculation program …… WA9GUK 182
o Build the EI Sapo Tester – for hams with spare time …… Staff 184
o Finally! A Simple PROM Burner! – for the 8223 and 82S23 …… W7JSW 186
o Try A Topical CQ – for special interest groups …… K4GRT 188
o Call Letter Gouger – adds class to any shack …… WB6JYK 189
o Adjustable Bench Supply – would you believe 1.2-37 volts? …… Staff 192
o Test Instrument Saver – an old phone is required …… Miller 193
o Photoelectric Bench Accessory – when you need an extra “eye” …… W3KBM 196
o Inside the SR-52 – calculator doubles as micro …… WA6THG 198
o Boost Your TR22! – with a mini rock crusher …… WA2INM 200
o QRM on the Moon? – yep, on all bands …… W4NVK 204
o Filcher Foiler Car Alarm – car door operated …… WB6THJ 206
o Quick Deviation Meter – for the IC-22A …… WA1UUK 207
o Build a Noise-free Power Supply – avoid spikes with sine waves …… K4DHC 208
o Surplus Goodies – are they really for you? …… Villastrigo 210
o Try A New Mode! – don’t let boredom strike …… N4KC 214
o Build A Useful HF Receiver – Novice special …… Staff 216
o Wake Up A Dead Repeater! – with these new Q signals …… K9AZG 218
1978
January 1978 (#208)
o The Go-first-Class Digital Tester – build this outstanding in-circuit logic monitor …… W7BBX/4 24
o The Unbeatable Base-Loaded Three-Element Rotary Vertical …… W3KBM 22
o Negative Numbers On A $9 Calculator …… WB6IXT/7 32
o Sideband Exposed! -the mysteries of SSB unveiled -why not understand it once and for all? …… W2FEZ 34
o IC Timer Review …… W3HB 40
o Forget Ohm’s Law …… Stanfield 46
o Brew Up A Signal Generator …… Staff 50
o Reprogram Your IC-22S …… W6UTE 54
o Try The ID VIP Method …… Hargett 58
o Build A Deluxe QRP Transmatch …… WB4VlQ 61
o Dodge That Hurricane! …… WB4IXK 62
o Guilty? Or Not Guilty? …… WA6HDK 69
o Transformers for Purists – have fun designing and building your own transformers …… WA7NEV 70
o Simple Scanner For the IC-22S …… KH6EM 74
o Cool It! …… K4Kl 78
o How to Get Better Satellite Pictures – improving weather satellite recording systems …… W3KH 82
o To Err Is Human …… WB2TOC 86
o The $500 Egg Timer – how to use your computer for practical around-the-house things …… Mickle 92
o You’ll like SOL! …… WB6JYK 94
o How To Keep Your Computer Happy …… WD9DDV 98
o It’s Super Clock – software to enclockify your computer …… W4CQI 102
o Improve the AX-190 Receiver …… WA3TLD 106
o Hooking the Kids …… DiBlasi 114
o Tune Your Tower To 80/160 …… K9SOG 118
o Clean Up Your Act …… Staff 136
o Where, Oh Where …… W2XQ 138
o Power Supply Regulation …… WA3TLD 140
o The Op Amp Encyclopedia – part I of a lonnnng series …… K4IPV 142
o How to Build a Bionic Elephant! – and have it smell like a rose …… WB6IQS 146
o Transistor Primer …… K1UZ 149
o I Love My GTX-1 …… WA4HVH 150
o How It Was …… W6lM 152
o Build This FM Signal Generator …… W9HDA 154
o “I Must Have One of Those Somewhere” – confessions of a junk box junkie ……WB7CTH 158
o Is It Glass Or Iron? …… WA2SUT/NNN0ZVB 160
o Build A Simple Capacitance Meter …… W8DCC 164
o Simple Sequential Decoder …… W7JSW 166
o PC Techniques …… Staff 168
o Space Age Junque III …… W9CGI 170
o The Ham CBer …… WA4BBU 172
o Laying Our Your Shack Scientifically – human engineering comes (at last) to amateur radio …… W3ZVT 174
o Hands-free Mobile Mike …… W9KXJ 178
o Heath HT Goodies …… WA1IZS 180
o Try A Sensor Keyer …… WB4TED 184
o Logical Logic …… N6WA/WA6JMM 188
o Pulses Galore! …… Plevcan 194
February 1978 (#209)
o Inexpensive EKG Encoder …… WA3AJR 20
o What Are They Showing On SSTV? – have you been missing something? …… K4TWJ 24
o Build A Better Phone Patch – hybrid -op amps-the works …… Poirier 28
o Drake TR-4CW Review …… K4TWJ 30
o Build A 3-1/2 Digit DVM …… WA5VQK/5 40
o Clean Up Your Tochtone Act …… WA6THG 44
o The Tempo 2020 -satisfaction tells all …… WA2KOK 48
o Repeater Procedure …… WB4NAY 52
o Tighten Up Your SB-102 …… W2POG 53
o QRP Hints …… N2MW 54
o Brass Pounding Simplified …… K6JM 58
o UHF Propagation …… KL7IEP/1, W1KIQ 62
o Tune-Up Aids For the Blind …… WB1FFQ 64
o KIM-l Can Do It! …… W4CQI 68
o A Secret Weapon For Road Rallies …… K9PTI 72
o Looking For A Micro? – consider the KIM-1 …… O’Reilly 76
o Fiendish New QUBIC Program …… Bishop 78
o Put An ELF In Your Keyer – sneaky computer strikes again …… WB9MQY 82
o Try HCAI …… Hughot 84
o Raid! …… W8JJO 88
o See Q, See Q …… VE3FLE 90
o Measure Periods With Your Counter …… K6MWM 92
o Super Siren – it’s loud! …… 96
o CB to 10-part VIII: the Publicom I …… WB6LQE 98
o Coming of Age …… VE3FlE 100
o Put A Sony In Your Shack …… Staff 102
o How To Compete With An HT …… VE7AQS 110
o S.A.S.E. …… W9CGI 112
o A Ham’s Life Cycle …… VU2JS 114
o Antennas …… K4SE/WA4DBG 116
o The $5 Magnetic Mount – cheap and sticky …… WA2UMV 118
o Versatile Transistor Tester …… WA5TFK 122
o Autopatch Digit Suppressor …… K4FFW 124
o Surplus Adventures – pound foolish! …… W9HDA 126
o TS-700A Calibrator …… K9POZ 128
o Keeping the Zap Out of the Shack …… W7RG 130
o Painless Touchtone Adjustment …… W3HT 146
o The Overkill Stall Warner …… W9CGI 150
o Try 220, You’ll like It! …… K0OST 154
o How To Dissipate 200,000 Megawatts – fool Mother Nature …… W4NKV 158
o Can A Miniature Antenna Work? – relief for the cliff dweller …… W6AQM 160
March 1978 (#210)
o The New, Improved “Best Keyer Yet” – updating MINI-MOS …… K4JEM 22
o The Powerful Grounded Antenna – thrives on poor soil …… W0SII 26
o How To Cut Costs On Power Supplies …… W9HDA 28
o You, Too, Can Go Digital …… K2RB 32
o Old Receivers – A Hidden Gold Mine – updating those ‘405 receivers …… W6GXN 36
o Old Rigs Can Live Again! …… K41PV 40
o Novices, Paddle Your Way To Happiness – super deluxe Novice keyer …… W0OGX 44
o How Many pF is That Capacitor, Really? …… WA0ZCR 48
o Exorcising Power Supply Demons …… K41PV 52
o Meet the Plastic Wonder …… K0OXB/5 58
o Don’t Miss the Excitement of QRP …… K9SGZ 62
o Is Your Repeater Up-To-Date? …… W4VGZ 66
o 1220 MHz -Use It Or Lose It! …… K1CLL 72
o New Protection For Your Car – simple force field system …… WA4GIM 76
o The Great cover-up …… W4FXE 78
o The World Of Tone Control …… K3JE/2 82
o Solve Those Parallel Problems …… N3IE 88
o At Last! An RFI-free Computer! – the Cromemco Z-2 …… WB6JYK 92
o Programming Coil Design …… K7SBK 98
o If You Want To Know Where You Are …… Burhans 108
o Do Biorhythms Really Work? …… W4KFT 110
o From CB To Amateur Radio …… WB4POH 114
o Improve Your HW-2021 …… K1WXK 130
o How Much Power Does It Draw? …… Fowler 131
o Surprisingly Low-Cost Lab Supply …… W6GXN 132
o Wireless Monitoring For the Bionic Ham …… W8FX/4 134
o Flash Project For Camera Fiends …… WA6UNK 140
o Kerchunk Counter …… W6NUI 143
o The Solar-Powered Ham Station – one hundred Watts, yet! …… W5VBO 146
o The Cheaper Chip …… W7JSW 150
o The Go Pro HT Mod …… W8FX/4 152
o A 2m Antenna for the Perfectionist – with considerable details …… WB2AWG 154
o Are You Afraid To Build? …… W4RYO 156
o A Brass Horn For X-Band – simple 10.5 GHz antenna …… W1SNN 164
o A Cheapskate’s Circuit Board …… WA1BVD 168
o Good Grief, Not the 225 Again? – yes, even more flexibility …… WB2LEI 172
o Avoid An Overvoltage Catastrophe …… W7RXV 176
o The Amazing Zener Sweeper – big deal gadget tests zener diodes …… WB4YOD 178
o How To Use A Varactor …… W6JB 182
o Can A Diode Replace A Relay? …… Staff 184
o Shock the Car-Burglar …… W1DIS 185
April 1978 (#211)
o Ecstasy In Multimeterland – build this autoranging marvel …… WA4AIH 24
o How To Succeed On 1296 – cat-food can 50-Watt amplifier …… W4UCH/2 32
o How Do You Use ICs? – part IX …… WA2SUT/NNN0ZVB 44
o You’re Still Using Tubes? Yeccch! …… W6HPH/G5AWI 50
o The Challenge Of 10.5 GHz – use it or lose it to Smokey …… W1SNN/WR1AFE 60
o In Search Of the Ultimate – an incredible counter calibrator …… W6YUY 66
o Super Deluxing the TR-33 …… WA6JFP 72
o Feeding A Hungry Microcomputer …… W6GXN 76
o The Exterminator …… Lasher 84
o At Last! A Use For Your Computer! – RTTY filter design program in BASIC …… Stewart 88
o Now Anyone Can Afford A Keyboard …… Eaton 92
o Godbout Strikes Again – ECONORAM: an outstanding value ……WA7NEV 102
o The Klingons Are Coming! …… WB9LSS 104
o The Experimenter’s Dream Calculator …… Reid 114
o Toward A More Perfect Weather Picture …… Cawthon 116
o Is TTL Already Obsolete? – CMOS vs. TTL …… WB5IRY 120
o Simple CW Interference “Filter” – diode code regeneration …… W8FX/4 132
o How Sunspots Work – basics for the Novice …… WA4FDE 136
o Schottky: A New IC Generation …… McClellan 158
o Use Noise To Tune Your Station …… W6DOB 160
o The Double Whammy Mobile Clarifier – tune out the wife and kids …… K8JS 168
o Danger! Microwave Radiation! – just how much is dangerous? …… WB6JPI 170
May 1978 (#212)
o A Keyer? Who Needs Another Keyer? – would you believe a $2 keyer? …… W6APZ 24
o Official FCC RFI Report – curing radio and TVI …… FCC 30
o Hey, Old-Timers! The Breadboard Is Back! – jiffy up those IC circuits …… WA7NEV 46
o Fake ‘Em Out With Remote Control – TT-operated control unit …… W4VGI 52
o Now-A Digital Capacit- Meter! – simple construction project …… W3KBM 58
o DMM Survival Course – all about using digital multimeters …… McClelian 62
o What Happened To SSTV? – is it dead or alive? …… K4TWJ 72
o Build This Excitingly Simple Receiver …… K4DHC 76
o Can Hams Counter Police Radar? – electronic warfare: another step …… WA4WDL 80
o Why Not Go First Class? – FM, RTTY, ID, PL, TT, etc! …… W9CGI 84
o Diary Of A Survivor – cyberosis victim tells all …… WA6PPZ 92
o How Good Is the North Star Disk? – and why is it getting so popular? …… Bosen 100
o Pseudorandomness Is Just Not Good Enough – true random happiness with a Z-80 …… WA1PTZ 103
o Beethoven Need Not Fear – a little night music on the micro …… G8HBR 106
o Hex Converter for True-Blue Octalists – BASIC program …… Dolinear 110
o The Cheaper Beeper – “Bell” for your CRT RTTY or uP …… VE2BVW 111
o Semi-Instant Program Loading – bauding up the SWT 6800 …… WB4GXE 112
o The Super Select-o-Ject – kill rotten QRM with this filter system …… W8FX/4 116
o The IG-102 Goes Transistor! -tubeless portability for this Heath signal generator …… Rossnick 120
o The Miser’s Delight Repeater Controller – the very ID! …… W2PMX 124
o Another Ten Minute Timer? – yup …… N9MX, K9MX 128
o Make Antenna Tuning A Joy – instant swr bridge …… K5QY 134
o If You Want To Know Where You Are – loran-C receiver: part: II …… Burhans 146
o Home-Canned Dummy – cheap half-gallon load …… WB2BWJ, WA2JZR 154
o De-Zap Strap – so you can MOS around …… W6SWZ 156
o No, Not Another 22S Mod? – yes, another Icom 22S mod …… VE2TM 158
o Scare the Hell Out Of Burglars – ham shack alarm systems …… WA6WUI 160
o The COR Goes Solid State – turning two Midland rigs into a repeater …… WA6ILQ 162
June 1978 (#213)
o Happiness Is Being A Ham Manufacturer – 73 visits Cushcraft …… W2NSD/l 30
o Extended Double Zepp – old-timer’s delight still works …… W6TYH 34
o New Dipole Feeder – tuned feeders, yet! …… AA6AX 38
o The Cliff-Dweller’s Delight – how to operate from an apartment …… WA2UVC 40
o Wait Till You Try 16 Elements! – 15dB gain on 2m is a real kick …… WA8FCA 42
o Working 15m With A 20m Beam – by adding three more elements …… W8ZCQ 46
o A Better Feedthrough For Cables – the $2 solution …… WA8FCA 50
o Resurrecting The Beverage Antenna – try this 55-year old, low-noise, low band antenna …… W5USM 52
o How To Hang A Longwire – without a catastrophe …… W5GN 58
o The “German” Quad – six bands with one antenna …… WD4CPK/DF3TJ 60
o Mobile In Disguise – the invisible 3/8 wave 2m antenna …… K9MLD 62
o Better Than A Quad? – try a delta loop …… WA4NWW 64
o The Perverted Double Vee Antenna – double your pleasure from 40m through 10m …… W5VSR 66
o Creeping Crud Got Your Signal? – pollution is slowly destroying your system …… K4TWJ 72
o Towering Low Band Antennas – berserk mathematician figures impedance …… K3OQF 74
o The 80 Meter Pile Crusher – the ultimate vertical? …… W2OZH 76
o Phased Verticals For Easy DX – and under $20 …… W1ZY/LA0BP 82
o Modernize The Matchbox – increased capability for a classic coupler …… W8FX/4 84
o The Miserly Magnetic Antenna – make this sausage-can magnetic mount …… W2AZD 86
o The 75m DX Chaser Antenna – the 5/8 wave works on 75m as well as 2m …… N4VD 88
o The Invisible Allband Antenna – works DX, too …… WA4FYZ 92
o Who Says Verticals Don’t Work? – the four-band phased-vertical bomber …… W2LFJ 96
o Low-Cost Keyboard-II – software for the April keyboard …… Eaton 100
o Computerized Loop Antenna Design – in BASIC …… WB2IPD 108
o Hey! Wail For Me! – slowing computers to reading speed …… WA3MWM 111
o Morrow’s Marvelous Monitor – reviewing the Morrow front panel …… Eigsti 114
o Enjoy All Bands With A Remote Tuner – motorized marvel …… KL7AE 118
o New Use For CB Antennas – converting ’em for ham use …… WA2KBI /JY9KS 122
o Confessions Of A Vertical Fanatic – careful, he’s looking for converts …… KH6HDM 134
o Novice Guide To Phased Antennas – part I …… W8HXR 136
o The 21-Element Brown Bomber – 2m beam with sadistically strong signal …… W9CGI 140
o The Towerless “Tower” – new grounded-rotor design …… K4FK, N4OG 146
o The Two Hour, Two Meter Beam – simple five-element loop yagi …… WB9TNW 154
o Now Try 1296 MHz – simple discone antenna …… WA4WDL,WB4LJM 158
o The OSCAR Boppers – turnstile antennas for 145 MHz and 432 MHz …… G3ZCZ/W3 160
o Cushcraft Does It Again! – their new tri-bander is a winner …… K1OPQ 166
o The S-Meter Bender – W7DND’s magic antenna …… W8HXR 170
o Amazingly Simple Log Periodic Antenna – an 8-lb, mini LP for 20m …… K1QAR 174
o Disguised Birdhouse Vertical – give the bird s a hot foot with this secret antenna …… K5LUW 178
July 1978 (#214)
o Enjoy All Five Bands – with this novice no-trap antenna …… W8FX/4 32
o Reincarnating Old Test Equipment – a 1942 capacitance meter is born again …… W3BM 40
o Finding Radio Pests – basics …… WA1UUK 42
o Video Magic For Your Home – to make boredom disappear …… K4TWJ 44
o Novice Guide To Phased Antennas – part II …… W8HXR 48
o Can A $20 FM Rig Work! – testing the VHF Engineering TX150 2m xmtr …… WB4LJM, WA4WDL 52
o Hiss Exterminator – an ear-saver for the TS-700A …… K9POX 54
o Instant Engraving – to protect your equipment …… W7RXV 58
o The New, Improved Automatic Thermostat – adding a night thermostat …… W9YBU 60
o Give ‘Em A Break – with a cheaper repeater beeper …… WB6JPI 62
o It’s Flora Clock! – and all is well …… W8FX/4 64
o Build Your Own Digital Dial – great update for your receiver …… W1OOP 66
o The FM Rebroadcaster – flexibllity for the FRG-7 …… W8FX/4 72
o J.B. Fields, Radioman – now it’s the Navy’s turn …… WB7SZC 74
o Counter Accuracy For Perfectionists – updating the K2OAW counter updates …… K0KDT/5
o The New Op Amps – better, lower cost …… WA0UVX 78
o 22 Remote – outside programming for your IC-22S …… W8FX/4 80
o Handling Ole George – is amateur radio ready …… K5GNZ 84
o The IC-22S Scanner – still another 22S mod …… W9LIJ 86
o Computerized Capacity Meter – cost $1 plus a computer …… Eccleston 88
o A Much Needed Micoder Power Supply – beets that lily-livered battery …… K3MPJ 90
o Your ‘Scope Can Be Improved – simple calibrator …… N5KR 92
o How About SSB CB Conversions? – no strain …… W4GMM 96
o The Universal Notcher – easy as pi …… W9CGI 98
o The $5 Memory Keyer – for lazy cheapskates …… WA1EBY 100
o Should Repeaters Use Subaudible Tones? – theological argument …… K9XI 102
o RAMmed By Morrow – ECONORAM III lauded …… Hallen 110
o Six Said His First Words Today! – and you taught him how …… WA3MWM 112
o The 22S Programmer Program – diode selection in BASIC …… W6OVP, K6MAR 114
o The Occult Computer – test for ESP with a micro …… WA6VIY 116
o A Baudot Program For Your Micro – simulated Vegas visit …… Fricke 118
o VHF Notch Filter – rejection can be beautiful …… WA4WDL, WB4LJM 123
o Yes, You Can Build A Synthesizer! – 220 MHz synthesizer for under $50 …… K2DVQ 124
o Beat the Microphone Blahs – more oomph for FM audio …… KlHQW/4 134
o Forbidden Contacts – 19 countries off limits to 4X4 amateurs …… Nobel 136
o A Darn Good IDer – repeaters get smarter every day …… K5OM 142
o Pick A Frequency …Any Frequency – ultra-flexible crystal calibrator …… W8FX/4 146
o Sometimes A Kit Is Best – Bullet power supply kit exposed …… W6SWZ 150
o Coming In Out Of the Cold – power supply for your mobile rig …… W6GXN 154
o Roy Rogers Special: Triggered Sweep – lab scope performance for less than a gigabuck …… Renaud 156
o VHF Transverters and the FT-l0l – quickie FM conversion …… W6OJF 168
o Instant Paddle – cheap, too …… W3IHA 170
o Watch the Wind! – with this junk box anemometer …… WA4FWR/5 172
o The War Against Rust – some good news for radio towers …… K8AO 176
August 1978 (#215)
o Radio Row Revisited – it’s alive and well in Tokyo …… W8JJO 26
o How To Work Europe With An HT – hint: requires trans-Atlantic plane fare …… WB9PYM 28
o What? CB Repeaters?! – perfectly legal, too …… WA4EOX 34
o A Complete X-Band Transmitter – easv to build ……W1SNN 38
o Shock!!! – what to do when Thor’s hammer falls …… McAlister 44
o The PVC Portable – a “go anywhere” 2m ground plane …… WA6RJK 48
o The Amazing Mobile life Preserver – simple, but effective …… W2EVM 51
o Power line DX -(almost) wireless remote control …… N2CX 52
o Ruddy Good Show! -2 meters in the Mother Country …… G3WDI 58
o Rock Steady – touchtone! stability for Heath’s HW-2021 …… WA5RON 60
o In the Eye of the Beholder – ugly transformers make beautiful power supplies …… WB6JYK 64
o The End of Rf Feedback – here’s how the pros do it …… K4TWJ 72
o The Heavyweight – a keyer base that stays put …… K9MX 74
o Sleight of Hand – getting 12 V from 24-V transformers …… K4SE 76
o CD to 10 – part IX: a pair of Radio Shack rigs …… WB2UYI 78
o In Search Of Stability – temperature-compensated crystal oscillators …… Burhans 80
o On Your Mark! – RTTY tips for the TS-820 …… WA4KIL, K4FK 82
o A WWV Primer – become a calibration freak …… W8FX/4 84
o The Swiss Fork Special – half-a-beam space saver …… Staff 90
o The End of the Rat’s Nest – a sensible operating console …… WB9FRM 92
o 2001 -3 – a ham odyssey …… WA5SNZ 94
o The Kalculating KIM-l – calculator versatility for any KIM …… Lasher 100
o A No-Cost Digital Clock – use your programmable calculator …… N8RK
o The BASICs of L-Network Design – your micro makes it simple …… K7SBK 108
o Hung Up On Autopatch? – build this frustration fighter …… WA6THG 112
o Updating the Wilson 1402 – making a good rig better …… WA9RAQ 114
o Quick Check For TT Pads – test for flea market bargains …… K3BPP 115
o The Op Amp Beam Heading Indicator – modernize your antenna system …… K0BV
o Super Charger – keeps nicads up to snuff …… WA7YGB 120
o HW-l0l Owners, Check This! – RIT mod for the good old HW-101 …… HB9BLU 126
o Sidetone Is A Must – improves your fist enormously …… VE3EKR 128
o The Tiny Tone Repeater Saver – super-small tone burst system …… W4VGZ 132
o Dispense It Right! – simple tips for wire and cord …… W4RVO 141
o Ham Radio Is NOT A Rich Man’s Hobby – another myth exploded …… WA6NCX/l 142
o The Toggled 22 – simplified program for your IC-22S …… Fletcher 148
o Custom-Make Your Key Paddle – the iambic Zephyr …… W6JB 150
o Don’t Let Your Battery Die – extend its life with this simple timer …… WB8TXG 151
o New Life For Double Sideband! – awake, ye pioneers, and get cracking …… K1IO 152
o Time And Tide -Digitally – march to a different drummer …… WA1TNG 156
o The Sneaky J – for cliff dwellers and other unfortunates …… W8FX/4 160
o The End of Autopatch Embarrassment – don’t get caught with your Micoder down …… W4CUG 168
o The “Do It All” Digital Clock – it’s even programmable …… K6UGT 176
o More CW Fun With Break-In Keying – how it works …… WB0KTH 180
o Poor Man’s Cruise Control – better than the commercial jobs …… W9CGI 184
September 1978 (#216)
o CB to 10-part X: Realistic’s Mini 23 …… K5LUW/K5SA 38
o Four-wheel Frenzy! – hams and the Baja International …… K6WS 26
o T-R Erotica – rf switching with PIN diodes …… W4VGZ 32
o The Autodialer Revisited – a circuit board and other improvements …… W7JSW 34
o Watergate Special – create your own 18-minute gap …… HB9BLU 36
o Be Legal – build an ID reminder …… AD4A/WA4MFY 40
o Another IC-22S Scheme – for oddball repeaters …… WA1ZMQ 44
o Improving the SWTPC UDI – self-preservation made easy …… K3MPJ 46
o Graduate to a Better Operating Desk – lost of class …… WB6EKO 48
o The SWL Bible – tuning the ends of the world …… W2XQ 50
o The Mobile Dream Machine – Kenwood, Drake, Larsen.. and Ford …… K9SQG/8 58
o Be A Surplus Survivor – don’t get burned by a boat anchor …… WB4APC 62
o Tracking the Wild Turkey – DF tips …… WA8BHR 64
o High Q Antennas – stop worrying about swr …… K4KI 68
o When In Doubt, Improvise! – adding TT convenience to your HT-144B …… W6LTV 72
o Relief for the Rockbound – continuous tuning for FM rigs …… WB2EQG 74
o Power Supply Magic – the forgotten voltage doubler …… Burt 78
o DVM Scrapbook – the basics …… McClellan 82
o Meet Mr. Blizzard – Dayton hams were ready …… K8YQH/AA8P 88
o The Blizzard Of ’78 – a real snow job …… W8HXR 92
o How Do You Use ICs? – part X …… WA2SUT/NNN0ZVB 94
o Relax and Unwind – your antenna wire …… WA4TJJ 98
o Nuclear Attack! – WWIII on your SR-52 …… WA7WKA 100
o Computerized QSO Records – who needs a logbook? …… WA7VZR 106
o RAM Checkout’s A Snap – this tiny program does the job …… WA7NEV 112
o The Case of the Missing Offset – adding to the HW-2021 …… K3JZD 118
o What Do You Do With A Timekube? – when in doubt, modify it! …… Staff 122
o Gourmet Guide To Capacitors – for that project you have cooking …… W5JJ 126
o The ARC Tuner – rejuvenated surplus …… K9QLL 128
o Home-Brew Circuit Boards – cheap and simple …… W9IWI 132
o 73 Reveals Bias! – transistor operation exposed! …… W5JJ 136
o CB to 10 – part X: Realistic’s Mini 23 …… K5LUW/K5SA 138
o Kerchunk …Kaboom! – safe distances between dynamite and rf …… N5KR 140
o Be Mr. Clean! – simple RTTY trash remover …… WB4FXD 142
o Build the Triple Threat Keyer – great Novice project …… W8FX/4 144
o The Ten Meter AM Antenna Special – $5 vertical also works SSB or FM …… W6RCL 146
o Buddy, Ya Got A Match? – build one L of a matcher …… K4KI 152
o Another Trick for the 22S – now it’s a remote control system …… WB7SHW 164
o “Stop Timeouts!” Revisited – PC board for K3VTO’s timer …… WB3ELV 168
o Maintain Control – keeping power tools in their place …… Stanfield 170
o CB to 10 – part XI: Hy-Gain’s PLL rigs …… WB5BSG 172
o Active Voltage Divider – for dividing active voltage …… PY1AQL/CT1EM 174
o Charge! – your nicads …… W4VGZ 201
o Light Right? – do it yourself photo exposure meter …… Mills 204
o Micoder Magic – improve it with easy mods …… K4BJF 214
o Build the IC Experimenter – getting started with TTL and CMOS …… Leonard 220
o A New Type of 10 GHz Receiver – use it or lose it …… Kopeika, 4Z4TJ 222
o Two Meters At the Summit – a backpacker’s delight …… W6FJT 224
October 1978 (#217)
o DXpeditioning – a “how to” guide …… WA2VMS 26
o VHF On Your Frequency Counter – an easy-to-build prescaler …… WB0KLH 34
o The KM1CC Story – hams celebrate Marconi’s miracle …… WA1JWD 38
o Good News! – easy autoranging for your counter …… Lassagne 44
o Mighty Mods for the 820S – more power and convenience …… K4FK, WA4KIL 48
o Improving Heath’s HT – a hall-dozen swell mods …… WA6TLK 54
o Total Control – a versatile TT system …… WB2MPZ 60
o Oddball Splits and the IC-22S – work any repeater …… W6YUY 64
o The History of Ham Radio – part VI …… W9CI 68
o Reusing Coax Connectors – worthwhile salvage job …… W0FEV 72
o Building From Magazine Articles – the breadboard/wire-wrap way …… WA7NEV 74
o Super Simple TT Generator – uses almost no components …… WA6AFX 78
o Microstrip – magical PC technique explained …… N6TX 80
o Low-Pass Filler Primer – tells all …… K2OAW 98
o Hello Hamdom! – a Cber makes the switch …… WN3NNY 102
o More “Coming Of Age” …… VE3FLE 103
o Rejuvenate A Pawnee! – put it on 2 …… K4GRT, W4IEV 104
o High Seas Adventure -Ham Style – part I …… WA6FEI 112
o Build A Better Beeper – variable time-interval generator …… W3QVZ 122
o DMM Buyer’s Guide – expert tells all …… McClellan 126
o Triple Threat – Microlog’s RTTY, Morse, and ASCII system …… K3CMY 130
o The Ultimate T-Hunt – repeater jammer foiled again …… WB6JPI 136
o Two Meter HT Survey – data on 21 rigs …… K5XY 142
o Interrupts Made Easy – for 8080/S-100 users …… WB6LOA 146
o Use A Computer? Who, Me? – yes you! …… WB2HJD 154
o Bird Watching in BASIC Land – another use for your micro …… K6EW 156
o Computers and the Real World – practical D/A and A/D conversion …… WlFZA 161
o World’s Cheapest QSLs – BASIC program keeps your log too …… WA7VZR 166
o The Long-Term Effects of Working with ICs – learn the five warning signs …… WA2SUT/NNN0ZVB 182
o The Lady Saw Red – if the shoe fits …… WB4ZVZ 184
o The Frugal Alternative – home-brew an HT charger …… W8FX/4 186
o PLL Techniques – a practical guide …… Earnshaw 188
o Build A TTY Tester – works for TTL-compatible printers too …… K7YZZ 198
o It’s A Ham’s World – show this one to a non-amateur …… K2HTO 210
o Attention. Weather Watchers! – advanced circuitry for WEFAX processing …… Cawthon 218
o Interchangeable Test Leads – individuality has limits …… K2MPJ 249
o Happiness Is A Smart Scanner – mods for the PBM/AWE FMSC-l …… K8JS 250
o Tweaking Your Linear – the right way to tune it …… W5VSR 252
o CB to 10 – part XII convert a Kraco PLL rig …… W1PI 254
o Tuned Circuits In Your Junk Box – making do with what’s on hand …… W3KBM 256
o Support Your Local Fire Chief – hams and the safety services …… W1FYR 258
o Improved Scanner for the VHF/One plus – a $4.00 mod does it …… W7AAY 262
o A Perfect Power Supply? – well …almost …… WB3BUU/8/K8UR 268
o Mobile Security Blanket – remote control for older rigs …… WA1RTD 270
o Further Adventures of the IC-22S – our hero gets offset flexibility …… W6WUT 274
o Antenna Design: Something New! – controlled-current distribution …… W4FD, W4ATE 282
o Build An Audible Transistor Tester – it’s a CPO, too …… WB7NZG/DA1DB 291
November 1978 (#218)
o Electro Sculpture – be a radio Rodin …… VP2DN 32
o The SUMSUE Method – determining code speeds …accurately …… K1RH 36
o The UART Gear Shifter – for multi-speed RTTY …… KB8CE 38
o Silence Groaning Refrigerators – check your house wiring …… K4KI 42
o Bargain Preamp – muliple uses for this one …… W5REZ 44
o Murphy’s Masterpiece – the lost weekend …… WA6PPZ 48
o How About Some Holm Shack Safety? – don’t be a statistic …… W7FGD 52
o Head ‘Em Off at the (High) Pass – improved filter design …… WB6GNM 56
o 555 Basics- And More! – get to know this versatile IC …… WB4CEO 60
o Educate Yourself – an almost painless method …… WB1AHL 64
o Novel RTTY Autostart – we could write a book …… K2OAW 68
o The Easiest Offset Ever – a treat for 2 …… K4GOK 74
o The Chip Switch – a digital troubleshootmg triumph …… WB2QEL 78
o Automatic Repeater Offsets – it’s all so logical …… N2YK/WB2NYK 82
o CB to 10 – part XIII: the Lafayette Telsat SSB-75 …… DF1SP/W2 86
o The History of Ham Radio – part VII …… W9CI 90
o Build An FM Tweaker – simple deviation meter …… W3QVZ 94
o Another Surplus Treasure – convert the R-648/ARR-41 receiver …… McClellean 96
o Pffft -Zapped Again! – front-end protect your test equipment …… WA6THG/KH6JSA 100
o One Meter-Many Jobs – an introduction to shunts …… Fletcher 102
o Who Uses All Those Frequencies? – the competition for radio spectrum …… WB6JPI, WB6HDB 104
o MDS: What Is It? – and what’s in it for you …… Edwards 106
o FM Calibration on a Budget – why pay more? …… W9HDA 108
o Build the $80 Wonder – a deluxe frequency counter/standard …… W3HB 112
o Add-A-Scanner – for any synthesized rig …… N2YK/WB2NYK 116
o CB to 10 – part XIV: a Realistic PLL rig …… K0QLC 120
o No More Excuses! – get on RTTY with this simple demodulator …… WB4MBL 124
o The Junk Box Station – ham ingenuity does it again …… WA4DQN 126
o R-X Bridge + Calculator = Vswr – antenna tuning without QRM …… WB5ILK 130
o High Seas Adventure-Ham Style – part II …… WA6FEI 136
o “Look What Followed Me Home! – a PET of your very own …… Lilie 142
o A Hex on Your 8223 – space-saving magic …… Schneider 148
o The Micro Maestro! …… K6EW 150
o SSTV Meets SWTPC: Part 1 – micro-enhanced pictures …… K6AEP 168
o Squelchifying Cheap Receivers – junk-box project …… WA1PDY 182
o Try FM On 29.6 MHz – no, it’s not a CB channel …… WA7WYF 184
o Build the Brute – unique heavy-duty power supply …… N9KV 186
o The Multifunction Scan Can – another IC-225 goodie …… W1IBI, W1HZH 192
o Be A Weather Genius – eavesdrop on GOES …… WB8DQT 198
o Happiness is a DMM Kit – Sabtromcs makes a gem …… W7AAY 208
o Vintage Receiver Mods – new life or hamfest bargains …… W2OLU 210
o Deep, Dark Secrets of the TR-7500 – exposing hidden talents …… WB9SEQ 212
o The TTY Lifesaver – saves money, too …… Sergo 216
o Build the “Version Three” – simple RTTY TU does it all …… Colby 218
o Heath’s GR-88 Gets Religion! – convert it to 2 meters …… W2AOO 222
o Four Terminals Are Better Than Three – using the new voltage regulators …… W1SNN 226
o CB to 10 – part XV: a Realistic HT …… K5UKH 238
o The Circuit Board Aquarium – no fish story …… WB9QZE 240
o Build A Decent Dummy – no oil, no light bulbs, no hassle …… K4IPV 244
o Who Needs Transistors? – you do! …… W5JJ 250
o A Junk Box Load Simulator – for battery testing …… W5JJ 252
o Blockbuster RTTY Article! – Selcal and W-R-U on a budget …… W9IF 254
o Automatic Autopatch – safeguard your health …… W6GJS 266
o Using Bargain Muffin Fans – a keep-cool idea …… K4SE 276
o Loran-C as a Frequency Standard – is 3 cycles a week good enough? …… WA4EID 278
o Ham Help! – a telephone aid for the blind …… N4AL 286
o An Experimenter’s Delight – a lab bench with style …… WA1WLW 288
December 1978 (#219)
o A DXer’s Dream Vacation – try sunny Montserrat …… WB6JPZ 30
o Close Encounters – the eyes of Texans are upon them …… K8NQN 36
o The Schizophrenic Triangle – a split-personality radiator …… WA4JTJ 44
o From CW to Computers – a digital modulation primer …… N6RY 48
o A 28 Cent Touchtone Mod – something for (almost) nothing …… W9CGI 56
o Space Age Surplus – your own Saturn V? …… Endress, Endress 60
o An X-Band Transceiver – more 10-GHz fun …… W1SNN 64
o SSTV Recorder Controller – replaces your index finger …… K3JML 82
o Receiver Diseases – and how to Cure them …… K4IPV 90
o Autophasing for WEFAX – preserve your mental health …… Cawthon 96
o The Lunch Counter – eat it up …… WA4PIN 105
o Confessions of a Stripper – confirmed junkor tells all …… K5GNZ 114
o Tuned Feeders and Other Good Stuff – who needs coax? …… W0VM 118
o Build a Realistic S-Meter – “you’re S9 + 40, OM!” …… DJ3NW 126
o Wow! A Good Portable Receiver! – thanks, Panasonic! …… WA2EJT 130
o The XITEX Video Terminal – a quiet alternative to your Model 15 …… AH6AQ 132
o Light Up Your Life – the 2036 glows digital …… WA4NUE 136
o High Seas Adventure-Ham Style – part III …… WA6FEI 142
o Whither Microcomputers? – a pro looks ahead …… WB2HJD 148
o SSTV Meets SWTPC: Part 2 – micro-enhanced pictures …… K6AEP 152
o A Multi-Memory Morse Machine – using a Motorola micro …… WA8TIW 160
o “This is Your Computer Speaking” – how to dial up your micro …… Sorrels 164
o RTTY with the KIM – one more step …… VE1AKL 170
o DX Delight – a do-it-all program …… WA4VQD, N3NN 174
o Big Max Attacks – it’s W2DU vs. K4KI, in the battle of the bazooka …… W2DU 182
o The Packet Radio Revolution – pioneers, take note! …… VE2PY 192
o This Voltage Standard Is Precise! – and makes calibration a snap …… WB6NTR 200
o The 22S Goes Digital – add 7-segment displays …… KH6IEL 206
o WARC ’79 Preview – showdown in Geneva …… WA9MZS 212
o The “Flim-Flam” Factor – another biased article …… WA2SUT/NNN0ZVB 216
o Build the Flexi-Filter – a very active device …… W3QVZ 222
o The Klassic Kilowatt – four 811As do it …… K4TWJ 226
o Ham Radio Goes to School – 10-year-olds love it …… N2CF 230
o What’s Your uF? – a six-digit answer …… K5BTV 234
o Fail-Safe – protecting repeater batteries …… WA7DPX 250
o Code-Practice Oscillators – an exhaustive report …… W6GXN 256
o PCs Are Easy – step-by-step details …… VE3CGE 270
o The Games People Play – why not hams? …… WB3EUG 274
o An Improved HV Tube Socket – easy modification …… Miller 287
1979
January 1979 (#220)
o The Italian Freq Generator – from Bologna to you …… K7YZZ 24
o Happiness is a WE-800 – proud owner loves his Wilson …… K3JML 28
o Explore the World of VLF – with this simple converter …… W3QVZ 32
o The S.H.A.F.T. – special tuning gadget for sightless hams …… K5CW 34
o A Remotely-Tuned Matchbox – ultimate operating ease …… W4PSJ 38
o Diodes of the Dead – eavesdrop on the great beyond …… K5JRN 44
o Building an Economy Receiver – junk box, here I come! …… WB8NEX 46
o The ST-5 Plus – improvements on a favorite TU …… K5QY 50
o Build a $10 Digital Thermometer – hundreds of uses …… McClellan 52
o CB to 10 – part XVI: a CW conversion …… W4GBB 56
o Try a little KISS – you’ll love it …… K8AO 58
o Autotrak II – chase OSCAR with ease …… W9CGI 62
o The Twofer – double-duty IDer logic …… K3JML 78
o Adam-12 Revisited – a scanner unscrambler …… N8AMR/4 80
o Digital RTTY Is Simple – easy as 01, 10, 11 …… WB5NYX 84
o Take the Pledge – a no-compromise console …… K3MPJ 86
o Two Meter Tone Alert – keep everyone on call …… WA3ENK 90
o Sneaky Car Security System – an alarming article …… WB8SWH/W8VL 94
o Design-a-Notcher – automated filter values …… WA4HUU 100
o The Cosmac Connection: Part 1 – computertized CW …… VE3CWY 102
o Noise Bridge BASICs – computer-optimized radiation …… N6RY 108
o The Morse Master – convert your computer friends to hamdom …… WB9TNW 114
o The MINI-MOUSE Key – perfect companion to the MINI-MOS keyer …… WA6EGY 120
o One Step Further – PTTR instead of PTT …… Staff 124
o Hooray for LC Filters! – simplest is sometimes best …… Ogushwitz 126
o The Soft Touch Keyer – send CW with no moving parts …… WA3PKU 128
o SOS! Ship in Trouble! – life and death on 20 meters …… W1BNN 132
o Minicontests – get ’em involved! …… Stocking, W0VM 138
o Are Your Op Amps Opping? – try this IC helpmate …… W3KBM 139
o Major League TT Controller – 15 digits, 40 devices, 100 bucks …… K3NCL 140
o CB to 10 – part XVII: SBE and Pace rigs …… K3SZN 156
o Electronics Education by Mail Order – successful student reports …… N6UE 172
o Time-Domain Retlectometry – to check out your transmission lines …… Staff 178
o High Seas Adventure -Ham Style – part IV …… WA6FEI 184
February 1979 (#221)
o Five-Chip Auto IDer – in case you forget …… Bartholomew 28
o The Vacationer – B&W’s portable antenna …… WA2ALT 29
o Tone Decoder Improvements – another step toward perfection …… WA1LMV 30
o The All-Wrong Power Supply – works in spite of itself …… WA3EEC 32
o The Hardhearted Rf Detector -insensitive to harmonics …… N4ES 33
o Custom-Designed Power Supplies – try the 723 …… K2GEJ 34
o A Touch of Class – nifty $35 operating console …… WA4CUD 39
o How To Bury Coax – the garden cultivator technique …… W4MEA 40
o Mobile Antenna Ingenuity – cheap HF radiators …… WA8ATE 42
o Impedance and Other Ogres – another look at swr …… Staff 46
o The Active Filter Cookbook – review of Lancaster’s treatise …… VE2BVW 50
o A Rock-Solid AFSK Oscillator – hooray for stability! …… WB4MBL 52
o Pulser Plus – a one-shot with more …… VE2BVW 54
o Oh, My Poor Quad! – measuring wind speed …… K2CL 56
o A Self-Contained, Fully-Automated, Transistorized Fuse Tester – amaze your friends …… G3TAI 58
o Don’t Get Burgled! – build this simple alarm …… Fletcher 60
o Power x 2 – dual auto batteries …… Miller 61
o Experimenting with Tones – fun with functions …… W2FPP 62
o Synthesize Your Ash Tray – article for non-smokers …… WB9VWM 64
o Attention, Satellite Watchers! – a solid-state monitor for GOES …… WB8DQT 66
o Batteries Dead? – take preventative measures …… Staff 78
o How to Nab a Jammer – another use for 220 …… WB0CMC 80
o This Station Plays Beautiful CW – with a Morse keyboard …… WB9WRE 84
o The Cure for Migraines – a low-pass CW filter …… Harper 92
o An 8080 Repeater Control System – part I, an overview …… N3IC 94
o The Cosmac Connection: Part 2 – meeting Mr. Morse …… VE3CWY 106
o Learning the Code – a better way …… Waldie 110
o Books for Beginners – you have to start somewhere …… WA7NEV 116
o The 2 Meter ECM Caper – James Bond , move over! …… W2JTP 118
o “I Love My Ten-Tec!” – a look at the 540/544 …… WA0JIH 120
o A $5 Phone Patch – the darn thing really works …… WA6RJK 122
o The Filcher Foiler Revisited – vehicular protection …… Davis 136
o Build An Economy Zener Checker – versatile test rig …… W4RBL 137
o Alaskan Adventure – stalking the elusive KL7 …… WB5WDG 140
o The Last DXpedition – “QTH hr is Purgatory” …… K3FDL 142
o An Audio Morse Memory – got a tape recorder? …… WB6WQN 144
o The Amazing Active Attenuator – can you find a use for it? …… VE2BVW 146
o A Single IC Time Machine – amazing clock …… K6SK 148
o Car Battery Charger – junk box special …… W1DWZ 156
o Immortality for Vacuum Tubed – build a solid state tube saver …… K5KXM 160
o The Hot Mugger X1 – coffee drinkers, rejoice …… WB9QZE 163
o Build the Mini-Probe – its only logicical …… Rister 164
March 1979 (#222)
o RAM Scan Your KDK – amazing flexibility for $30 …… WB2JHN 26
o The NCX-Match – build something useful …… WA6NCX/l 32
o The Memorizer Goes to MARS – expanded frequency coverage …… KH6JMU 38
o Build a Hybrid Capacity Meter – digital circuitry, analog display …… WA4HUU 40
o Power Plus! – a 20-Amp, adjustable, regulated dc supply …… W6YUY 42
o Reaching for the Top – why stop with the General ticket? …… N1PL 46
o Universal Alarm Circuit – detects heat, light, moisture… you name it …… Staff 50
o Exorcise Those Unwanted Frequencies – try coaxial stub filters …… Staff 54
o 10 cent: Mod for the 225 – extra channels for $.00455 each …… K5XT, WB5SXT 56
o The 10-GHz Cookbook – monster article …… K6IQL 60
o Legalized ASCII! The Quad-S System! – even the FCC approves …… W2FJT 80
o Brew Up a Beam for Two – double-barreled design …… VE3BSM 88
o Keyboard Serialization – when parallel isn’t enough …… Bosen 90
o Ignition Noise and 2m FM – one ham’s cure …… W3QG 94
o An 8080 Repeater Control System – part II: hardware …… N3IC 100
o DX Fantasy – a moment in the sun …… VE3FLE 109
o Try a Log Periodic Antenna – with a computerized design …… WA1ZAC 110
o New Coax Cable Designations – watch for them …… W5JJ 112
o The Micro Magic Pi Designer – figure networks with a minimum of fuss …… Boelke 114
o A Better Micoder – no more battery woes …… KG6JIF 116
o Winning the QSO Name Game – sure beats 3 x 5 cards …… WA3MWM 118
o A New Approach To Nicad Care – charges up to ten at a time …… W0LM 119
o On the Razor’s Edge – it could happen …… W5WY/l 122
o Tips for VOM Users – current topics …… Staff 128
o Chamber of Horrors – a true story …… WB6WFI/LB 144
o An Intelligent Scanner for the HW-2036 – it’s programmable …… WA9TAH 150
o Trickle-Cost Trickle Charger – junk-box project …… W5JJ 163
April 1979 (#223)
o A Speedy Spinner Mod – 5,000,000 Hz per minute …… W2RZJ 40
o A Variable Bandpass Active Filter – extremely simple design …… W3KBM 42
o What About an Active Antenna? – here’s a look at one …… W5JJ 44
o Help for the Hearing-Impaired – don’t miss another phone call …… W4VRV 56
o Try a Bi-Loop Antenna – gets you coming and going …… W7CJB 58
o Simple RTTY IDer – uses five ICs …… G3MEJ 60
o Tales of Speech Processing – including a practical design …… WA4JHS 62
o PTT For Ten-Tec’s Linear – no more “aahhh” and “uuhhh” …… DA1NF/WD6AXL 68
o Disaster Preparedness – it can happen here …… N4AL 74
o Comfort Mods for the Mark II – invert your duck …… WA4HUZ 78
o An 8080 Repeater Control System – part III: software …… N3IC 82
o The Micro Duper – for small contests …… WB2MIC, WA2RZR 96
o An 8080 Disassembler – written in BASIC, yet! …… Raskin 98
o Antenna Bonanza for 10 – CB is good for something …… W6LVT 102
o Lightning! – a case history …… W8HXR 104
o Build a CW Memory – fun! …… WA1ZFW 106
o Wire-Wrap on a Budget – home-brew your tools …… K4LPQ 108
o Compact Continuity Tester …… Miller 116
o Who Needs SSB? – using your FT-101 on 10m AM …… K8JS 118
o 12 Volts, 5 Amps, 3 Terminals – what could be simpler? …… WA4FYZ 120
o Has Anyone Seen OSCAR 7? – find it with your SR-56 …… Mayse 122
o Tricky QSK – a treat for CW …… Blasco 124
o Make Life Easier – with a workbench speed control …… W4CQQ 126
o The Heath/Kenwood Connection – RIT for the 104 …… WB5QGI 128
o An 8-Element, All-Driven Vertical Beam – super array for DX …… W1DBM 132
o CW with a Nordic Flair – new life for the Viking I …… K2VJ 146
o House Hunting for Hams – caveat emptor! …… WB9URA 150
May 1979 (#224)
o CB to 10 – part XVIII: several PLL rigs …… K9PS 30
o PROM IDer for Longer Callsigns – don’t be caught short …… W4VGZ 34
o The W7GAQ Key Collection – 250 museum masterpieces …… K7NZA 38
o Proper FM Transceiver Adjustment – good club project …… VE3AVY 44
o Dual-Band Smokey Detector – Super Scooper does it all …… W1SNN 48
o The DXer’s Secret Weapon – costs you nothing …… W6BKY 64
o Foiling The Mad Kerchunker – frustrate him with this circuit …… K5MAT/N5EE 66
o Trends in Surplus – it’s not what it used to be …… WA2SUT/NNN0ZVB 68
o An 8080 Repeater Control System – part IV: addenda …… N3IC 72
o RTTY Transceive for the KIM-1 – requires video terminal and AFSK generator …… WB8VQD, W83GCP 78
o Keyboard Konvenience – simplify entry of BASIC programs …… WA7NEV 86
o DXCC in One Sitting – know your prefixes …… WA4FYZ, N2CR 88
o A Low-Cost Circuit Board Holder – price tag: 45 cents …… Steele 92
o User Report: the IC-245 – good things come in small packages …… W8YA 96
o The History of Ham Radio – part VIII …… W9CI 100
o Improving the Sabtronics 2000 – make a good DMM even better …… N8AMR/4 138
o Turn Signal Timeout – eliminates two-wheeled embarrassment …… KlOTW 142
June 1979 (#225)
o Add Digital Display for $50 – 100-Hz accuracy …… K4IQJ 28
o High-Performance Receiver Add-Ons – aren’t ICs wonderful? …… W5DA 32
o A Solution to the Home-Brew Housing Shortage – building a box for your next project …… W0IHI 38
o How Do You Use ICs? – part XI …… WA2SUT/NNN0ZVB 42
o Customize Your HT144B – some nifty mods …… W2KGV 46
o Ultra-Simple CMOS Logic Probe – a single IC does it all …… WB9PHM 50
o “The Voice of Wolf Creek” – the KGCX story …… W6CK 54
o CB to 10 – part XIX: Lafayette SSB rigs …… WB0LLP/5 60
o At Last! A Really Simple Speech Processor – 5 dB for $10 …… W9UT, WB9OEC 64
o New Life for Tube-Type Dippers – simple circuit reads out on your frequency counter …… K4LJA 66
o You Ought To Be in Pictures – here’s what the guys on 14.230 are doing …… K4TWJ 68
o How to Toot Your Own Horn – and stay on key …… WA4CLG 72
o A Junk-Box HT Charger – power to the portables …… WB9JLY 76
o Protect Your Home-Brew Panels – no more spraying …… VE2BVW 80
o Now You Can Possess Instant Recall – don’t tell ’em the computer helped …… WB5UTJ/N5AUX 86
o Calcu-Trip – a program for the open road …… Lutz 92
o Charging Up the WE-800 – a convenient alternative …… K7CMS 94
o Where Have All the kHz Gone? – are the ham bands an endangered species? …… W8GI 96
o The Ramsey 2m Amp Kit – has a high Watts-per-dollar ratio …… N8RK 100
o An Improved Display for the TR-7400A – very sensible …… WA6AVJ 108
o Inexpensive Scope Tuner – “budget here is QRP, OM” …… VE7CGK 110
o The Resistance Substitution Box – a ham’s forgotten friend …… WA2SUT/NNN0ZVB 112
o Vodka Amongst the Penguins – hamming with the Russians in Antarctica …… W1FK 126
o Protect Yourself with a GFI – before it’s too late …… WA6PEC 138
o Poor Man’s CW Memory – works even with a straight key …… WB0RYN 142
o Power Up for Mobile Operation – adding an auxiliary battery …… WB9SKX 146
o Project Update – doubled capacity for K2OAW’s repeater IDer …… K2OAW 148
July 1979 (#226)
o A Visit to Antenna Specialists – Wayne tours the test range …… W2NSD/1 30
o Secrets of Guyed Towers – put ’em up and keep ’em there …… WB3BQO 34
o Death-Defying PL Mod for the KDK 2015 – not for the squeamish …… W8GQL 40
o Feed-Horn Mounting Made Easy – solution to a pesky problem …… WB8DQT 44
o Antenna Tuning Joy Revisited – remember the Tektronix 190B? …… W9CGI 48
o Modern Solid-State Equipment Design: A Better Way – sorry, tube fans …… W4RNL 52
o Shortened Antennas for 75 and 80 – designs which fit your QTH …… W4AEO 58
o Build This Simple 220 Yagi – 3 elements, 6 dB …… N8AJA 66
o Beware of the Dreaded Phantom Ground – exorcise those antenna gremlins …… WA2SUT/NNN0ZVB 68
o A Close Encounter With Voyager I – the W6VIO story …… K6PGX 70
o Giant Wire Antennas – impress the neighbors …… WD8CBJ 72
o Microcomputer RTTY… a Software TU – use your 8080 and very little else …… N1AW 78
o Baudot Hard Copy For Your-SWTPC – noisy, but cheap …… K4HBG 84
o The 9-Element Duoband DX Attention-Getter – when you call, they listen …… K4FK, N4OG 92
o Here’s a “Twist” – an OSCAR antenna with a difference …… K4TWJ 96
o A Fortified 2m Whip – won’t bend in the breeze …… W9AMM 98
o Ageless Wonder: the Collinear Beam – sure beats a dipole …… W1FK 100
o Three Baluns for a Buck – go find yourself a junked TV …… W6SJQ 102
o So You Want to Raise a Tower – do it safely, do it right …… WA7DPX 104
o The Revolutionary Organic Antenna – product of NASA research …… Gaddie 118
o DDRR Dipole for VHF – experiment! …… W6VX 126
o Tennamatic: An Auto-Tuning Mobile Antenna System – works allof 40 and 75 …… W6TWW 132
o Add Solid-State Braking to the T2X – a worthwhile improvement…… WB2DTY 140
o Compact Beams for 20 or 15 – build these-when your quad bites the dust …… W8HXR 144
o “Weeping Willow” Vertical for 40 – go out on a limb and build one …… WA6OYS 150
o Marine-Band Activity – a complete guide …… WA2KBZ 154
August 1979 (#227)
o You Can Watch Those Secret TV Channels – a complete MDS receiving system …… K0JB, K0FQA 32
o Simple Dual-Voltage Supply – power for many projects …… W4VCZ 44
o Bargain Zener Classifier – Novice project …… WD8AAM 46
o What the Hell is a Decibel? – 1/10 of a bel, of course …… WA5EBB 48
o Frosting for the FT-901DM – simple improvements for Yaesu’s superb performer …… K4TWJ 50
o Mods for the Mark – desirable extras for your Wilson HT …… K9EID 52
o The History of Ham Radio – part IX …… W9CI 56
o Add-On Keyboard for Your Keyer – the “a la carte” design …… K4BZD 60
o Little Extras for the Century 21 – easy add-ons …… KN4JJG 64
o The Many-Talented 723 – how can regulated supplies get much simpler? …… WB0SKX 68
o One-Chip Tone Decoding – how simple can it get? …… WB0VGI 72
o Computerize That Mailing List – club secretaries, this is for you …… WB5UTJ/N5AUX 78
o More Power to You – 12-V supply has current limiting, over-voltage protection, the works …… K9MLD 90
o Hit the Panic Button! – a kill-switch system protects you and your ham shack …… AA6C 94
o A Powerful Plus For Your TR-2200A – improved supply/charger is a first-rate addition …… W6RON 96
o Build a Wide-Range Rf Resistance Bridge – with a multitude of uses …… K4KI 100
o Try the Potted J – a 2m antenna impervious to the elements …… Staff 106
o Testing the DSI 3600A Frequency Counter – as much accuracy as you’ll ever need …… WA6ITF 108
o The Tri-Polarlzed VHC Antenna – should be a killer for VHF …… K8UR 116
o The One-Note Pipe Organ – cw never sounded sweeter …… WB7CMZ 120
o A Better Heathkit “Cantenna” – improved metering circuit for an old standby …… W5ZG 124
o The 80 Meter Coax L – compact design really works …… AA4AG/DA1KV 126
September 1979 (#228)
o Power Line DXCC (Distant Control Circuit) – the ac lines are a already there… why not use ’em for remote control? …… W9CGI 34
o Blueprint for Biofeedback Experimentation – fertile ground for pioneers …… WD5BNL 42
o The History of Ham Radio – part X …… W9CI 44
o Maximum Security for the 22S – remote control puts your Icom in the trunk …… K8KW 48
o The Big Blinker – a visual signal for the deaf …… AD5X 50
o Morse Converter for DMMs – super gadget for blind hams …… WA6AXE/3 52
o How to Home-Brew Your Own Crystal Filters – the series-string method …… Staff 56
o Four Bands on a Bamboo Pole – try a Chinese vertical slanter on 10 through 40 …… W0VM 60
o The Triton IV Goes QRP – simply and efficiently …… W1FK 64
o Experimenter’s Corner: The MM5369N – how many uses can you find for this one-chip crystal oscillator? …… Patten 68
o Digital Readout Rotator Control – can the microcomputer connection be far behind? …… K8TMK 72
o Build the KIM Keyer – with a 3-message memory …… K0EI 80
o No More TR5-80 Cassette Woes – E-Z loader does the trick …… WA9PUL, K9POX 96
o The Incredible Shrinking Transceiver – build it on two tiny PC boards …… K4DHC 100
o In Quest of Perfect Break-In – well almost perfect …… WB7CMZ 106
o The Amazing Audio Elixir – this limiting amp is a cure-all …… N6WA 116
o No More Rotary Switches – gadget freaks will love these solid-state replacements …… WA2FPT 118
o Confessions of a Teenage HFer – the world between channel 40 and 28 MHz …… Peter 122
o 70-Wall Shoes for the IC-502 – put some punch in that 6m signal …… WA1PDY 128
o The Big Bopper – a 5-band phased vertical array …… W0VDJ 136
October 1979 (#229)
o Extremely Low Frequency Radiation: Cause for Worry? – studies on ELF are inconclusive, but the battle is joined …… WB2NEL 34
o An LED Display for the HW-2036 – eliminates unwieldy thumbwheel switches …… WA4BZP 36
o It’s a Wattmeter… It’s an Swr Bridge.. It’s Swattmeter! – a super home-brew project …… K4LBY 42
o The Double-Sawbuck QRM Annihilator – 3-IC circuit yields perfect CW …… WA5QAP 50
o Center Insulator for your Next Antenna – do it yourself with PVC …… AC5P 52
o Another Approach to Repeater Control – uses 7516 chip for low parts count …… W7JSW 54
o Yes, You Can Build this Synthesizer! – keep your crystal rig …… WB2BWJ 58
o Analog Telemetry Techniques – while designed for medical signals, these circuits work with any analog data …… K4IPV 68
o The MICROSIZER: Computerized Frequency Control – a synthesized vfo replacement for most HF rigs …… N4ES, W4BF 74
o CW Fans: Give Superior Selectivity to your Atlas Rig – this mod uses an inexpensive MFJ filter …… WB9WWM 90
o A Sensible CMOS TT Decoder – presented by popular demand …… N6WA 98
o DTMFR for your Repeater – state-of-the-art TT decoding …… K4ALS 102
o Freedom Fighters on Forty – SWLing the anti-Castro clandestines …… KA5M 108
o The Miserly Mobile PVC Special – radiates a very economical signal …… AA4RH 112
o FSK Fix for the 820S – the RTTY relay remedy …… W1PN 114
o Einstein Was Wrong! – this story has a Mobius twist …… Phenix 116
o An 8-Bit DPDT Digital Switch – many uses …… W1SNN 130
o Get a Piece of The Rock – a DXpedition to Gibraltar …… W9JVF/ZB2CS 136
o Easy-to-Build 220 Transverter – simple hookup to any synthesized 2m rig …… WA7SPR 142
November 1979 (#230)
o New Rig for 10 FM – a review of the Comtronix FM80 …… K4TWJ 38
o The Black Art of Antenna Design – shedding some light on the workings of vertical whips …… Reynolds 40
o Introducing the 2m/220 Connection – give crossband operation a try with this inter-connection scheme …… WB4HXE 48
o A Fresh Start for your Old Tx – modernize it with grid-block keying …… KE4Y 52
o An Inflation fighter for 220 – join the fun inexpensively …… WA3HWG 54
o Building Long Yagis for UHF – some pitfalls to avoid …… W8DMR 56
o Working with FETs – part I …… WA2SUT/NNN0VB 60
o The MARC Success Story – your club can do it, too! …… K9EID 64
o Want to Upgrade? Take a Tip from a Ham Who Did! – previewing the new code test …… KB8FC 66
o A Microwave Primer – waveguides, x-band, and other fun stuff …… W1SNN 68
o CB to 10 – part XX: converting the Royce 1-655 …… N8AMR 72
o Something New: the MVM – “most versatile meter” measures capacitance and frequency …… Ogushwitz 74
o Amplify Your 6-Meter Fun – a cheap but effective linear …… N4QH 80
o CB to 10 – part XXI : the Johnson Viking 352 …… WA6OYS 82
o Exploring Uncle Sam’s Bookstore – what’s for you at the GPO …… WB3DRF 84
o Computerized Slow Scan Revisited – further enhancements for the K6AEP system …… K6AEP 90
o Son of Keycoder – an even Slmpler CW typewriter …… W4RNL 106
o Sloppiness will Get You Nowhere – organize your coax …… WA5TDT 116
o The Satellite TV Primer – thousands watch satellite TV every day, here ‘s how they do it and what they see …… W5KHT 120
o A Three-Digit Timer for TTL Illiterates – c’mon, tube fans, give it a try …… K3VTQ 136
o Sound for the CMOS Logic Probe – keeps your eyes on your work …… WB9PHM 138
o External Relay Control for Converted CBs – switch anything with this setup …… W5JJ 140
o Preserve Your Sanity with this Midland 509 Mod – why put up with rotten noises? …… WA6MPG 144
o Touchtoning Your Memorizer – Yaesu’s made it easy …… AD1B 146
o The Small But Mighty Arboreal Aerial – tree-hanging tri-band vertical …… K5JRN 148
o What Do You When Your Rotator Dies! – you fix it like this …… W5JJ 149
o Beams vs. Linears: Which Should You Buy First? – get the most bang for your buck …… N4OE 156
o The Chicken Delight Beam – a tasty morsel for 10 …… K8SD 158
o The TR-7500 Goes Inverted – see you on the flip-flop …… WA2JKN 160
o Ready for the New Repeater Subband? – your FT-221R can be …… WA6FWQ 162
o “Hey! That Sounds Like .01 uF!” – intended for the blind, this audible multitester is great for everyone …… W4KIX, W4RYY 170
o The W4HCY Antenna System – give this new design a try …… W4HCY 178
o A 3-Band Mast-Mountable Miniquad – a quad need not be monstrous …… WA6UHU 182
o Bargains in Remote Antenna Switches – watch for these surplus gems …… W5JJ 185
o A No-Nonsense Operating Table – basically, it’s a flat surface on legs …… Anderson 186
December 1979 (#231)
o New Product: Swan’s Astro 150 SSB Transceiver …… WB8BTH 32
o Low-Cost Receiver for Satellite TV – this modular design uses readily available technology …… N6TX 38
o A Simple 2m/10m Crossband Repeater System – work the world with an HT! …… K9EID 44
o Audio Booster for Mil-Surplus Receivers – a must for headphone haters …… McClellan 50
o Working with FETs – part II : experiments with gain and supply voltage …… WA2SUT/NNN0ZVB 54
o Build this $50 Mini-Counter – three-IC design goes to 135 MHz …… McClellan 58
o A Versatile, variable Active Filter – dc switching and 8-pole response make this one a winner on RTTY or CW …… WA8HEB 66
o Variable Tuning for WEFAX Receivers – why be rockbound? …… N6TX 70
o Ham Radio Marriage Manual – a YL and her understanding spouse …… WB5YVE 76
o The Space-Saving Square Vee Antenna – a directional radiator for cramped quarters …… W7DJB/6 80
o License Upgrading -A Plan of Attack – you need not fail! …… WB2RVA 84
o Muffin Fan Mania! – a compendium of knowledge about electromechanical air movers …… WA6NCX/1 88
o Are Repeaters Ripping Us Off? – some thoughts about open access to scarce frequencies …… KB2JN 92
o My TR5-80 Is Here… Now What? – first steps in programming your computer …… W3KBM 96
o Teaching Your Micro to Count – two methods for adding counter capability to your 6502 machine …… K6EW 104
o Operation Santa! – spread holiday cheer with this super club project …… WD8LPN 118
o Tools and Techniques for Wire-Wrapping – an excerpt from 73’s new book …… W6SWZ 126
o Working with Transistors – useful knowledge begins where gobbledygook ends …… WA2SUT/NNN0ZVB 132
o A Digital Clock with Analog Readout – this is progress? …… W9IEA 138
o Turn Off Repeater Windbags – HT mod brings welcome relief …… WD5HYQ 144
o Build a $5 Coax Switch – why pay more? …… W8HXR 146
o Hamdom’s Evangelical Crusade – born-again ops, arise! …… WB8TCC 148
o The Memorizer Flies Inverted – something Yaesu never told you …… W1WUO 150
o Double-Duty Decoder Project – listen to SCA and tune in RTTY …… WA1UFE/5 152
o Build a Simple HT Charger – doubles as a 12-V supply …… W6SMJ 158
o Do-it-Yourself Carrying Case for Wilson HTs – save $14.88 …… K2GMZ 160
o Come On In- The Viewing Is Fine – an update on trends and developments in SSTV …… K4TWJ 168
o Rack ‘Em Up – glass jars and orange crates are “where it’s at” for parts storage …… VE2BVW 172
o Gadzooks! A variable 0-260 V Ac Supply! – junk-box delight …… WB8JCQ/LU1AKO 174
o Scrounger’s Special: Used Dental Tools – your DDS throwaways make dandy PCB drills …… WA7OYX 176
o First Look at Latest Radio Laws – the official work …… KB5AO 188
o The Induction Relay: Self-Powered Switching – this unusual actuator doesn’t require a separate control voltage …… K6DZY 192
o The Further Adventures of Keycoder – simplified wiring for the toroidal cores …… AD9K 196
o All About Ground Rods – getting connected to Mother Earth …… Staff 200

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