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73 Magazine (Amateur Radio Today)

73 Magazine (also known as 73 Amateur Radio Today) (OCLC 22239204) was a United States-based amateur radio magazine that was published from 1960 to 2003. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne Green. The magazine title, 73, means "best regards" in amateur radio lingo. Green, a former editor of CQ Amateur Radio magazine, published the first issue of 73 in October 1960.



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73 Magazine (Amateur Radio Today)
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73 Magazine May 1984 (#284) From Base to Beams - Home-brew from the ground up - Here's how to build a tower and top it off with performance-proven antennas ...... W6TYH 10 A Little Gem for QRP - The T2FD antenna thinks it's a full-size rhombic. Feeding is believing ...... W8VFT 26 "The Tops of the Palm Trees" - 20,000 QSOs. Coral Sea. Banyandah ...... VK2BJL 28 How to Gain with PVC - This could be history's cheapest quad. Try water pipe on 2m ...... WB6BHI 37 Helicoids - Few people...
Topics: antenna, amateur, radio, lprint, mhz, khz, ihe, ttie, ham, amateur radio, radio club, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine September 1993 (#396) Computer Control for Beam Antennas, Part II - Give your station a smart, new twist ...... K4OND 10 The W2EKY "Icky-Stick" Antenna - Hit the roof with an improved ground-plane vertical ...... W2EKY 18 Compressing the W3EDP - Build this unique multiband restricted space antenna ...... G2BZQ 20 Distributed Capacity Twisted Loop - An indoor 40 meter antenna for five bucks ...... WA6QBU 26 Evolution of an Antenna - Build a new version of the classic...
Topics: radio, antenna, amateur, mhz, ham, repeater, frequency, amateur radio, radio today, ham radio,...
73 Magazine (Amateur Radio Today)
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73 Magazine April 1967 (#79) The Super Duper Super - It may not be a super, but it's sure super duper ...... WN1ECCH 6 A Toroidal VFO - An excellent VFO with many interesting mechanical features ...... W4BRS 10 Transceiver CW Filter and Monitor - Improve your transceiver's CW capability ...... WlDCG 14 Dreadful Ham Cliches - Special for April ...... K3SUK 16 The Converter Converter - Stick it between your UHF converter and your low-frequency receiver ...... W1OOP 18 The Ratnick Two'er - It's a...
Topics: khz, antenna, watts, power, ssb, circuit, ham, meter, receiver, amateur, power supply, watts pep,...
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73 Magazine September 1990 (#360) Quick and Easy Field-Strength Meter - Home-brewing can be simple! ...... KM4KT 9 75 Meter 1/4-Wave Sloper Array - Confessions of a contester ...... WA3EKL 18 Alinco Service Survey - Alinco may be the best show in town ...... WB6NOA 20 Dummy loads for DC Supplies - Don't risk your rig! ...... VE1GM 22 Mobile Power Source Organizer - Easy 12 volt hookups for your mobile gear ...... AH2AR/8 24 End-Fed Copper Dipole - Why buy when you can build? ...... N8KDD 26...
Topics: radio, amateur, antenna, mhz, frequency, ham, power, amateur radio, feedback card, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine May 1979 (#224) CB to 10 - part XVIII: several PLL rigs ...... K9PS 30 PROM IDer for Longer Callsigns - don't be caught short ...... W4VGZ 34 The W7GAQ Key Collection - 250 museum masterpieces ...... K7NZA 38 Proper FM Transceiver Adjustment - good club project ...... VE3AVY 44 Dual-Band Smokey Detector - Super Scooper does it all ...... W1SNN 48 The DXer's Secret Weapon - costs you nothing ...... W6BKY 64 Foiling The Mad Kerchunker - frustrate him with this circuit .........
Topics: mhz, amateur, radio, kit, frequency, antenna, repeater, power, model, amateur radio, radio club,...
73 Magazine (Amateur Radio Today)
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73 Magazine June 1980 (#237) One Step at a Time: Designing Your Own Ham Gear - part I ...... W4RNL 28 Down with Interpolation - a digital display for the Triton and others ...... W4FQ 36 Hooray! An AFSk Auto IDer! - a clean and and legal ending for RTTY transmissions ...... K3IJ 42 Let's QSY to .52 - ah, technology ...... WB2RVA 44 Five Test Equipment Bargains from Heath - the 5280 series features plenty of measuring power per dollar ...... W2QFC 46 The Phoenix Fix - an alarming...
Topics: mhz, frequency, antenna, amateur, receiver, radio, kit, power, magazine, amateur radio, power...
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73 Magazine December 1980 (#243) Who Really Invented Radio? - the twisted tale of Nathan B. Stubblefield ...... WB2NEL 36 In Search of the Elusive SES - track solar activity with this simple VLF receiver ...... WA3UER 42 An Even Better IC Timer - better than what? ...... WA0PBQ 46 Direct Printing FAX - Part II: constructing the facsimile recorder ...... WB8DQT 52 A 600-MHz Universal Counter - you'll freq out over this one ...... W4VGZ 58 Top-Banding the DX-60B - Part II: a companion vfo .........
Topics: mhz, frequency, antenna, power, magazine, radio, output, amateur, amateur radio, audio, circuit...
73 Magazine (Amateur Radio Today)
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73 Magazine April 1982 (#259) Watching the Weather - a cheap and easy conversion ...... KA9GDL 10 The Sinkhole That Ate Winter Park - hams vs. hole ...... KA4RUL 18 Operation Skywarn - tracking tornadoes with two meters ...... WB5ZAM 24 Measure Ohms with Your Calculator? - yes, and accurately, too! ...... Johnson 28 Scanning with the IC-280 ...... N7AAD 36 Detect Killer Tornadoes - use an ordinary TV set ...... K2VJ 50 TVRO Dish Selection Tactics - Satellite Central, part V ...... Gibson 54...
Topics: amateur, mhz, antenna, radio, power, kit, frequency, magazine, model, amateur radio, power supply,...
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73 Magazine February 1973 (#149) PC-IC-ID - For FM- RTTY- /M- etc ...... K2OAW 27 The Evolution of Spectrum Management - Radio Club of America Talk ...... W4BW 31 Phased Lock Loop Decoder - For continuous tone systems ...... WB6BIH 36 Toroidal Quadreture Antenna - New wideband antenna ...... W4KAE 40 Active Filter Applications - RTTY ...... W1SNN 45 Frequency Measuring System -II - Design theory and clock ...... K5DUS 49 Repeater Keying Line Control - Squelch tail and time-out ...... WB6BIH 60...
Topics: frequency, output, circuit, mhz, input, power, transistor, voltage, repeater, meter, power supply,...
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73 Magazine December 1994 (#411) Kit Builders' Primer - Yeah, I built that ...... WB8VGE 10 Stretched Vertical Gain Antenna tor 6 Meters - Here's a way to dramatically improve your 50 MHz operating capabilities ...... WB2EQG 30 The CW Operator's Friend - Simply push a button and send those frequently-repeated CQs, IDs and QTHs ...... WV5Q 36 Polarity Protection Plus - Don't take a chance of smoking your next project! ...... K5DKZ 40 DTMF Computer Interface - Harness the power of your PC to...
Topics: radio, amateur, antenna, ham, mhz, mfj, power, kit, tor, amateur radio, radio today, ham radio,...
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73 Magazine June 1984 (#285) Easy Berardi Building - You can count on this simple frequency counter from Arizona ...... Berardi 10 Don't Grope in the Dark! - Let a simple card-file box be the brains of your own emergency lighting system ...... W7RXV 16 Flying High with Two - Here's how a hand-held makes for some ultralight Michigan madness ...... WB8DQT 20 Creason's Do-It DVM - The more Sam builds, the more smart people pay attention ...... K6EW 26 Meeting Ends Make - These ten tips will better...
Topics: amateur, antenna, radio, mhz, ham, ttie, tor, magazine, tion, amateur radio, radio club, power...
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73 Magazine January 1980 (#232) NBVM: Dawn of an Era or Promotional Hype? - the performance and politics of Narrow Band Voice Modulation ...... N8RK 30 Frequency Counter Survival Course - use that gadget wisely ...... McClellan 36 DX with a Difference: the Utility Stations - when the ham bands get frustrating, give SWLing a try ...... WA3EOP 40 How to Write a RTTY Program - machine language is easier than you think ...... WA4FMZ 46 The Perfect Morse Machine - send and receive CW with a...
Topics: mhz, frequency, amateur, radio, antenna, audio, signal, power, meter, amateur radio, hewlett...
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73 Magazine May 1992 (#380) Poor Ham's Dynamic Component Analyzer - Build your own Circuit detective ...... KA1MDA 8 Log Periodic Dipole Array for 2 Meters - Wideband performance in a small package ...... N2KLK 14 QRP Sidetone Companion - And part-time code practice oscillator ...... KI5AZ 18 The Copperback Beetle - A new type of "bug" ...... KI5AZ 20 Battery Watchdog - Keeps your battery up to snuff ...... WB0TCZ/7 26 Control Your Station by Computer - Hardware and software...
Topics: radio, amateur, antenna, mhz, frequency, repeater, call, khz, ham, amateur radio, call call, radio...
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73 Magazine November/December 1975 (#182) Flip Flops Exposed ...... WB2NEL 30 Breakthrough in Fast Scan ATV ...... WB4YTU 37 Strobing Displays is Cool ...... WB4DCV 49 The Sensuous Tuned Lunch Box ...... W2FEZ 52 Loudest Signal in the World? ...... W0SYK 57 Build a Deluxe TTY Keyboard ...... K7YGP/7 63 Eyes for Your Shack ...... W0ACR 74 Predicting Third Order Intermod ...... WA2OKZ 95 Feedline Primer ...... WA1SNG 103 Caught "Spying" by the Gestapo ...... W1BNN 117 Why Tubes Haven't...
Topics: mhz, output, amateur, input, repeater, power, magazine, circuit, ham, antenna, circuit board, texas...
73 Magazine (Amateur Radio Today)
by Wayne Green
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73 Magazine (Holiday Issue 1976) (#195) Build This Inexpensive 400 Watt Amplifier - a pair of shoes never hurts W7SCD How Do You Use ICs? - part V WA2SUT/ NNN0ZVB Mobile Smokey Detector - 10.5 GHz:use it or lose it W1SNN Get a Kid Off the Streets - and in to ham radio WA1GFJ Add RIT to Your Transceiver - a must for CW operators Staff Coronaries for Burglars - with this cheapo car alarm WB60DS Power Supply - versatile WB4EHG DXpedition : Memories for a Lifetime - reflections of HKITL K3JJZ...
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73 Magazine November 1980 (#242) VSWR... Automatically! - simplify antenna matching with this tune-up aid ...... WB0GWP 42 Welcome Back, Barry! - the Scottsdale RC's most famous member ...... K7NZA 52 Return to Shangri-la - a visit with 9N1MM ...... W1QMS 58 Direct Conversion lives! - excitingly simple receiver project ...... ZS6UP 64 Hams vs. Hurricane Allen - 73 aids St. Lucia relief efforts ...... N8RK 70 Tune In the Wind - a do-it-yourself hot-wire anemometer ...... VE7DKR 80 Direct...
Topics: mhz, antenna, frequency, power, magazine, amateur, radio, model, meter, amateur radio, power...
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73 Magazine March 1984 (#282) In Search of the Shuttle: Fun, Frustration, Fatigue - From Maine to Hawaii, our special correspondents gave W5LFL their best shots. Thank them ...... W5LFL 10 W5LFL report, Burbank, California ..... K6DUE 10 W5LFL Contacts ...... ARRL 11 W5LFL report, Saugus, California ...... WA61TF 12 W5LFL report, Westbrook, Maine ...... KlEFZ 14 W5LFL report, Nashua, New Hampshire ...... WB1BRE 16 W5LFL report, Lansing, New York ...... KO2X 20 W5LFL report, Jacksonville,...
Topics: amateur, radio, antenna, orbit, ham, led, mhz, ihe, repeater, amateur radio, morse code, ham radio,...
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73 Magazine August 1976 (#190) How Do You Use ICs? - fundamentals ...... WA2SUT/NNN0ZVB 24 Surprising Miniature Low Band Antenna - the DDRR low noise antenna (part I) ...... Boyer 28 MINI-MOS - The Best Keyer Yet? - nothing Mickey Mouse about this one ...... WA6EGY 38 The Skinflint's Delight Breadboard - cheap imitation of a commercial IC DIP board ...... K7YGP/7 52 More PLL Magic - like low frequencies for RTTY ...... W9ZTK 56 The Logic Grabber - selected interval logic tracer (S.I.L.T.)...
Topics: output, kit, input, logic, antenna, frequency, circuit, amateur, radio, mhz, nand gate, amateur...
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73 Magazine January 1994 (#400) Using the World's Most Accurate Frequency Standard, Part 1 - Building a receiver for WWVB ...... K9EUI 10 Micro IDer - An easy-to-build automatic Morse code station identifier ...... KA9SZW, Pointer 18 The "Hula Loop" - A stationary bidirectional hybrid three-element delta loop ...... NH6XK 30 The Quad Charger - A constant current NiCd charger ...... K4GOK 34 EASY-PC Printed Circuit Layout Software - Want to get into computer-aided design (CAD)? .........
Topics: radio, amateur, antenna, mhz, repeater, ham, power, frequency, amateur radio, radio today, power...
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73 Magazine December 1981 (#255) Cold Comfort - an HT to the rescue at fifteen below ...... KA1D 12 Review: The Rex Bassett TLM-2 Mobile Mount - banish your fear of flying ...... KAlLR 18 Update Your CW Music Keyboard - play it again Sam ...... K5KL 20 Review: The Kenwood TR-7730 Transceiver - Let's get small ...... KA1LR 26 Joe Ham: The Consumer - do you fit the mold? ...... N6AVU 32 Bob Cooper: Profile of a Pioneer ...... N8RK 38 Satellite Channel Guide - part III ...... WESTSAT 44 Satellite...
Topics: antenna, mhz, amateur, frequency, radio, power, magazine, signal, satellite, amateur radio, power...
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73 Magazine April 1994 (#403) Motorcycle Mobile! - Take ham radio two-wheeling ...... KC6QJB 10 The 40 Meter Full-Wave Horizontal Loop - Take your signal to the treetops ...... NH6XK 14 The Big Kahuna - A 15' high, 160 meter Distributed Capacity Twisted Loop Antenna ...... WA6QBU 20 A Sensitive Bandspread SWL Receiver - Aaah, the nostalgic smell of dust burning off tubes! ...... XE2/KB6EPO 32 A 2 Meter Half-Kilowatt for $1 per Watt - Build this VHF amp using vacuum-tube technology! .........
Topics: radio, antenna, amateur, mhz, power, meter, ham, ihe, antennas, amateur radio, radio today, ham...
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73 Magazine February 1992 (#377) The Copper Cactus J-Pole - For 2m and 70cm ...... KE7AX 9 A Five-Component Wideband Amplifier for Your Receiver - Give your VHF receiver a boost! ...... K9EYY 12 An NE-602 RF Signal Generator - Useful test equipment from a versatile IC ...... Kerr 22 Colombian Expedition - Adventure in the Andes ...... KC4VLN 34 PVC Cubical Quad for 10 Meter -Build this $30 plumber's special! ...... KG5BI 38 VBI-360 Beam Indicator - Put your color display on the wall .........
Topics: radio, amateur, mhz, antenna, frequency, repeater, ham, amateur radio, radio today, ham radio,...
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73 Magazine April 1979 (#223) A Speedy Spinner Mod - 5,000,000 Hz per minute ...... W2RZJ 40 A Variable Bandpass Active Filter - extremely simple design ...... W3KBM 42 What About an Active Antenna? - here's a look at one ...... W5JJ 44 Help for the Hearing-Impaired - don't miss another phone call ...... W4VRV 56 Try a Bi-Loop Antenna - gets you coming and going ...... W7CJB 58 Simple RTTY IDer - uses five ICs ...... G3MEJ 60 Tales of Speech Processing - including a practical design .........
Topics: amateur, mhz, antenna, radio, power, frequency, kit, arrl, tion, amateur radio, power supply, toll...
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73 Magazine May 1994 (#404) HI-PER Audio Filter - This project provides High-PERformance CW filtering ...... KC3ZQ 10 Speech Compression - Make a monster mike! ...... KB1UM 16 Fast Charger - Recharge NiCd and NiMH batteries in as little as 30 minutes ...... KN6PK 22 The Radar Gun Reality - Ham scientist testifies on electromagnetic radiation ...... K6UI 30 Improved QRP Keying Circuit - A slick fix for your little CW rig ...... KD1JV 58 The ICOM IC-2iA Micro HT - Meet the evershrinking HT .........
Topics: radio, mhz, amateur, antenna, power, ihe, ham, repeater, tor, amateur radio, radio today, ham...
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73 Magazine February 1982 (#257) The Fun-Oscillator - a simple, goof-proof vfo for your QRP transmitter ...... WA0RBR 12 Build this Antennalyzer - you'll need a weekend ...... W1BG 16 Police Freqs for the TR-2400 - a sleepless night for the mod squad ...... N9AKX 26 Those Amazing Bobtails - the current-fed connection ...... W1XU 30 Shoot the Moon! - visual tracking for your EME array ...... W9CGI 34 CQ MARS de IC-2A - work new worlds ...... WD8JLW 46 The Father of FM - the tragic story of Major...
Topics: antenna, mhz, frequency, amateur, radio, signal, receiver, ham, magazine, amateur radio, toll free,...
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73 Magazine February 1995 (#413) Dual Bi-Square Loop for HF - Try this easy, low-cost approach on 20 and 2 meters ...... K5DKZ 18 Reading Morse Code on Your PC - Decipher Morse code right off the air, or improve your own fist ...... W6PRO 22 Cheap Dual-Band Yagi - A fine VHF/UHF beam made from old TV antennas ...... KA0NAN 46 Grounding and Lightning Protection, Part 1 - Protect your shack and yourself from lightning ...... W5UOJ 52 The Yaesu FT-900AT HF Transceiver - Base station performance...
Topics: radio, antenna, amateur, mhz, frequency, ham, meter, antennas, power, amateur radio, radio today,...
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73 Magazine April 1984 (#283) Doing It At Dayton - This unofficial Hamvention handbook helps attendees and dreamers alike ...... WA4BPI 10 Me and My Stupid Old PMOS Converter - At last, there's an easy way to get -12V from a +5-V power supply. Who said "trial and error"? ...... WB1HKU/6 14 Watch That Signal! -Haul out your old oscilloscope and turn it into a signal monitor. The conversion is easy and the price is right ...... W4RNL 20 Digital Design: How to Interface ICs - Connect ICs...
Topics: radio, filter, amateur, frequency, antenna, mhz, output, ham, magazine, radio shack, amateur radio,...
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73 Magazine October 1990 (#361) Dual Voltage Bench Supply - Versatile solution for your power supply needs ...... W6WTU 10 The SPC Transmatch - Improved performance for 20 through 10 meters ...... W4RNL 22 ROBO-COPY - Automate your shack with a CW copier ...... WB9DYI 28 An Easy to Make 2 Meter Antenna - Make a strong J-Pole from an old TV antenna ...... AA5KB 32 Solar Car Race - Searching for an alternative ...... WB8ELK 34 Service Survey Wrap-Up - Plus -where to get your old rig fixed .........
Topics: radio, amateur, antenna, mhz, ham, qsl, frequency, ihe, amateur radio, feedback card, ham radio,...
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73 Magazine December 1998 (#459) Probing Auto Electronics - Help your neighbor identify his car's problem and be an electronic's hero! ...... W6WTU 10 Announcing the QRPeanut - Here's a compact QRP transmatch you can build for next to nothing ...... N5GZH 14 Keys to Better Operating - Yes, much of it is common sense ...... W6BNB 17 Electronic Bug Emulator - Put some personality back into your CW ...... W4LJD 27 Low-Voltage Detector - for a number of uses ...... W6WTU 31 George's XE-Ient...
Topics: radio, amateur, antenna, mhz, frequency, battery, icom, amateur radio, feedback card, power supply,...
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73 Magazine September 1992 (#384) The Raser - A novel wire antenna system ...... W2OZH 8 My Longwire Antenna - Cheap, no-fuss, and it's got gain! ...... NH6XK 18 Wideband RF Baluns - A practical guide to the perfect match ...... K8IHQ 20 NiCd Restorer/Charger - Don't throw old NiCds away! ...... N7APE 24 High Performance 2 Meter Yagi - Improve your signal with this compact design ...... W3HMI 30 Common Audio and Speaker Bus - Control noise pollution chaos ...... W6WTU 36 ATV Transmitter, Part...
Topics: radio, antenna, amateur, mhz, ihe, ham, repeater, power, amateur radio, radio today, call call, ham...
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73 Magazine June 1979 (#225) Add Digital Display for $50 - 100-Hz accuracy ...... K4IQJ 28 High-Performance Receiver Add-Ons - aren't ICs wonderful? ...... W5DA 32 A Solution to the Home-Brew Housing Shortage - building a box for your next project ...... W0IHI 38 How Do You Use ICs? - part XI ...... WA2SUT/NNN0ZVB 42 Customize Your HT144B - some nifty mods ...... W2KGV 46 Ultra-Simple CMOS Logic Probe - a single IC does it all ...... WB9PHM 50 "The Voice of Wolf Creek" - the KGCX...
Topics: amateur, radio, mhz, power, frequency, antenna, circuit, electronics, kit, amateur radio, power...
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73 Magazine April 1980 (#235) Sunspots... What Do They Mean? - your guess is as good as mine ...... G3WDI 32 More on Jammer Nabbing - hints on equipment and strategy ...... WB0CMC 36 Cheapy Scanner for the Memorizer - is $5 cheap enough for you? ...... WA2ORU 38 Back to School - we can still learn a thing or two about basic electricity ...... W6HDM 40 Moving Display ASCII Readout - works with UARTs, keyboards, and micros ...... W8VL 46 Lab-Quality Hi I Supply - part II ...... McClellan 54 A...
Topics: amateur, mhz, radio, antenna, kit, frequency, magazine, power, khz, amateur radio, power supply,...
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73 Magazine October 1984 (#289) Find Fault with Your Coax - Is your cable really doing its job? Find out with this elegant detective method ...... K4IPV 10 The Aussie Parasol Beam - What has twelve corners, three bands, and uses 140 feet of wire? Hint: It's not a quad ...... W6TYH 20 The Incredible Broadband Bowtie - Truly designed for solid-state finals, this 75m antenna features 50 Ohms at the feed-and less than 1.5:l swr across the band ...... KC3HW 26 RX for Ailing Antennas - Maximize your...
Topics: antenna, amateur, radio, frequency, tion, rtty, ham, mhz, amateur radio, magazine, private patch,...
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73 Magazine January 1977 (#196) SSTV Test Generator - invaluable diagnostic tool ...... WA6VVL 22 How Does Your Rig Perform? - an example using the HW-1 ...... W6AGX 28 Art and the PC Board - new uses for copperclad boards ...... W7RXV 32 The "New" 88 Channel IC-22v - add two switches and flip ...... WA6OAZ 36 A No Hands Telephone Dialer - mobile accessory using a ROM ...... WA1PNG 40 What's the Best Antenna for 160? - the inverted vee compromise ...... W5USM 44 Ten Meters: Dead or...
Topics: amateur, mhz, power, antenna, circuit, output, meter, kit, frequency, repeater, amateur radio,...
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73 Magazine November 1982 (#266) A Perfect "10" - Timer, counter, logic probe - 10 functions in all. That's the Multi-Board One and you can build it ...... WA2BHB 10 Remote Control Your IC-701 - Simpler than commercial controllers, this home-brew circuit nevertheless features push-button band changing and frequency selection scanning, and expanded coverage ...... N2GW 14 Automatic Beam Aimer - Here is the scoop on adding set-and-forget convenience to your rotator control. Works with...
Topics: antenna, output, circuit, mhz, voltage, audio, frequency, magazine, power, power supply, amateur...
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73 Magazine January 1984 (#280) Breakthrough in Boston: The Birth of Crosslinking - Wl1UKZ built this box. It's small and it works. The question is whether you're ready for it ...... W1UKZ 10 Grenada Log - With a body-bag rig and gas from a bike, a ham hustled home the news. Here's history happening ...... K1XR, N8RK 20 Instant Pane Relief - This is the only notch filter for windows we've ever seen. If you can figure it out, you'll beat the feedline flu ...... KC8UD 22 Sound Off! - Here's the...
Topics: amateur, radio, antenna, mhz, tor, ihe, magazine, por, operator, amateur radio, power supply, radio...
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73 Magazine March 1978 (#210) The New, Improved "Best Keyer Yet" - updating MINI-MOS ...... K4JEM 22 The Powerful Grounded Antenna - thrives on poor soil ...... W0SII 26 How To Cut Costs On Power Supplies ...... W9HDA 28 You, Too, Can Go Digital ...... K2RB 32 Old Receivers - A Hidden Gold Mine - updating those '405 receivers ...... W6GXN 36 Old Rigs Can Live Again! ...... K41PV 40 Novices, Paddle Your Way To Happiness - super deluxe Novice keyer ...... W0OGX 44 How Many pF is That...
Topics: power, antenna, mhz, frequency, kit, circuit, output, voltage, meter, receiver, power supply,...
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73 Magazine December 1991 (#375) The Simple TX TX - The perfect companion for the SupeRX receiver! ...... WA6IVC 10 Project INSPIRE: A Space Shuttle Experiment - Build a simple receiver to explore the wonders of the 60,000 meter band! ...... KG6EK 22 The QUAG-V - A high performance and wide bandwidth antenna for VHF and UHF ...... WB3AYW 36 Computerized Tuning for Ramsey Receiver Kits - It doesn't have to be expensive ...... N8KDD 42 Not Just Another Island - Weekend DXpedition activates the...
Topics: amateur, radio, mhz, antenna, frequency, ham, repeater, receiver, amateur radio, radio today, power...
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73 Magazine December 1973 (#159) IC Code Speed Display - Check the FCC's code machine with this one ...... VE1BU 25 2 Meter Linear Amplifier - In case you want to try Moonbounce ...... W4KAE 29 A Simple IC Keyer - Nice 3 IC Keyer ...... K2BLA 37 Precision Waveform Generator - Sine, square and sawtooth waves from one IC ...... VE3GSP 41 Helical Resonators - Rise from the depths of QRM ...... W0PSF/2 49 Sensitive RF Voltmeter - Check out your rig's emotional problems ...... WA6NIL 53 The Greenie...
Topics: frequency, amateur, mhz, voltage, output, meter, repeater, power, circuit, receiver, power supply,...
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73 Magazine September 1977 (#204) A FAAR-OUT DXpedition ...... WA6YOB 25 So You Want to Get Into RTTY? ...... W9IF 28 Design An Active RTTY Filter ...... K2OAW 38 Moving Display RTTY Readout ...... WB8SWH 44 RTTY SWling ...... WA2MOT/WT2AAG 52 RTTY Local Loop ...... WB5IRY 59 Try the RTTY Reader ...... W3JJU, Cannon 60 Organize Your RTTY Pix ...... W2PSU 66 Build A RTTY Message Generator ...... WB9CNE 74 FSK for the Drake ...... WB8DMC 78 Baudot to ASCII Converter ...... VE4CM 80 Digital Group...
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73 Magazine March 1994 (#402) Getting Started With Satellite Imagery - Enjoy a bird's-eye view using your PC and VHF rig ...... KO4BD 10 Using the World's Most Accurate Frequency Standard, Part 3 - Building a good secondary frequency standard ...... K9EUI 18 The TW-1 Cheap Dig ital Front Panel - Easy thumbwheel tuning for the Techno-Whizzy 1 ...... N9JZW 26 The FOXBOX - A voice ID T-hunt controller ...... KI5GH 42 The Commercial General Radiotelephone Operator License - Pass that test! .........
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73 Magazine October 1993 (#397) More Gadgets for Your MFJ-9020 - Add features to this great QRP rig ...... W6YBT 10 Universal Automatic Minimum Power Control for AMTOR - Use just enough punch to get the job done ...... N7APE 14 The Challenge of QRP - An introduction to low power operation ...... WB8VGE 18 The RASER Revisited - How this superior HF dipole antenna can be improved ...... W2OZH 29 A New Look at a Simple VFO/Exciter - Stable tuning with minimal parts ...... W2IMB 35 73's DX Dynasty...
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73 Magazine December 1976 (#194) Go Tone for Ten - simple subaudible encoder ...... WB6GON 22 World's Simplest Five-Band Receiver? - using an AM transistor radio ...... K3QKO 28 How Do You Use ICs? - part IV ...... WA2SUT/NNN0ZVB 36 Hamming 101 - another Cabrillo College pioneering program ...... Inman 40 A Super Cheapo CW IDer - for FM repeaters and RTTY ...... K4EEU 46 The ZF Special Antenna - double-D "beam" ...... ZF1MA 51 CT7001 Clockbuster - the ultimate clock / calendar (for...
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73 Magazine December 1979 (#231) New Product: Swan's Astro 150 SSB Transceiver ...... WB8BTH 32 Low-Cost Receiver for Satellite TV - this modular design uses readily available technology ...... N6TX 38 A Simple 2m/10m Crossband Repeater System - work the world with an HT! ...... K9EID 44 Audio Booster for Mil-Surplus Receivers - a must for headphone haters ...... McClellan 50 Working with FETs - part II : experiments with gain and supply voltage ...... WA2SUT/NNN0ZVB 54 Build this $50...
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73 Magazine December 1983 (#279) Code Practice: Have You Seen the Light? - This simple cpo is the best weekend project under the sun -or bulb ...... Davidson 10 Unlimited Guarantee for Power Supplies - Plan for the worst and you'll get the best, says KC0EW. He might be right ...... KC0EW 20 PC Boards in a Flash! - Make circuit boards without expensive equipment. All you need is a light and a fast switch hand ...... KA1FJR 28 "We've Been Boarded!" -When the Lorelei strayed into...
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73 Magazine October 1979 (#229) Extremely Low Frequency Radiation: Cause for Worry? - studies on ELF are inconclusive, but the battle is joined ...... WB2NEL 34 An LED Display for the HW-2036 - eliminates unwieldy thumbwheel switches ...... WA4BZP 36 It's a Wattmeter... It's an Swr Bridge.. It's Swattmeter! - a super home-brew project ...... K4LBY 42 The Double-Sawbuck QRM Annihilator - 3-IC circuit yields perfect CW ...... WA5QAP 50 Center Insulator for your Next Antenna - do it yourself with...
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73 Magazine April 1975 (#175) Build This $50 HT ...... WA5RON 17 Proof of the Extraterrestrial Repeater ...... WB6IQS 21 Scanning with a Synthesizer ...... WA0AQO 23 Poor Man's BFO ...... WB9BNF 36 The Torrid Toroid ...... Harding 37 Voltmeter Switch Quiz ...... WA0ABI 38 WR3ABC - The Inside Story ...... K3BEQ 42 Eight Function Repeater Controller ...... W3JJU 46 Nicads - A Shocking Expose ...... WB6JPI 51 Preamp for the TR22C ...... WB4SNC 53 Ma Bell vs. Foreign Attachments ...... WB2PAP 56...
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73 Magazine October 1967 (#85) Incentive Licensing .... 2 The 2Q Receiver - 22 transistors; FETs in the front-end ...... W5ETT 8 The Really Rugged Rotator - For big arrays in bad weather ...... VE1TG 14 Designing Permeability-Tuned Coils - Simple and accurate ...... Marovich 20 A FET Converter for 40 and 160 - Beats vacuum tubes ...... K6DBQ 26 West Coast VHF Antenna Measuring Contest - At the 1967 VHF Convention in Fresno ...... W1DTY 30 A Slow-Scan TV Picture Generator - Another simple...
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73 Magazine July 1977 (#202) Motorcycle Mobile ...... WA4LWY 40 Inside the Bird ...... W6YUY 44 Introducing Autotrak! ...... W9CGI 46 A Battery Voltage Monitor ...... Hawkinson 52 The Morse Clock ...... WA1MXV 54 Hunting Noise ...... W6RVP 58 CMOS Oscillators ...... WB5DEP 60 A Dial for the FM-DX ...... W2PQG 63 Robot 400 Scan Converter Details ...... WB8DQT 64 Bounceless TT Decoder ...... WA5ACA 71 Hams Profit From CB ...... Norman 72 Patch Up Your 101 ...... K7VUA 76 The History of Ham Radio...
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73 Magazine May 1991 (#368) The Copperhead Keyer Paddle - The perfect touch! ...... KI5AZ 9 The Handy Inductance Bridge - For measuring small coils ...... KB4ZGC 11 The Mini-Keyer - A smaller and newer version of an old friend ...... WB9YBM 14 Covert Hamming - A design for your next secret mission ...... K6BRP 21 Software for the HamShack, Part I - Useful ham calculations you can program yourself! ...... WA4BLC 22 Two QRP Transmitters - Dust the ethers and bend the waves! ...... KI5AZ 26 A...
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73 Magazine February 1993 (#389) Fun at 10,000 MHz - Explore the wide open spaces of the 10 GHz microwave band ...... WB6NOA 10 The 23-Foot Indoor Antenna - Make an effective 20 and 80 meter apartment-owner antenna ...... G2BZQ 16 Accurate Low Cost VSWR Meter - Convert this CB accessory for 1.8-450 MHz operation ...... AD5X 18 An Effective 160 Meter Antenna - How to build one on a small residential lot ...... KA6MMQ 20 The "Simplest Transverter" - Check out the 6 meter band with this...
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73 Magazine December 1995 (#423) A Portable Integrated 20 Meter SSB/CW QRP Ham Radio Station - A ten pound powerhouse ...... KB4ZGC 10 Nostalgia For The Future - High performance crystal radio utilizes a high-efficiency JFET detector and dual resonant circuits for superior performance ...... KC3ZQ 14 A Perspirational Message ...... W2NSD/1 17 Jan Mayen - A Special DXCC Country ...... AJ0N/LA6US 18 Key It! ...... KB1UM 26 A Milliohm Adapter For Your DMM - Expand your meter sensitivity .........
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73 Magazine September 1975 (#180) The Calculating Counter ...... Johnson 22 A Satellite Fax System You Can Build ...... WB8DQT 39 Where is your simplified, sensitive millivoltmeter? ......G3JQQ 49 Three Button TT Decoder ...... WA0EDA 52 Underground Radio is Dirty Business ...... WA3AQS 57 What's Wrong with my SSTV? ...... K4TWJ 62 Queen Roger Papa from Hotel Whiskey Seven ...... W7IDF 69 40m DX Antennas - the Easy Way ...... W8HXR 78 The Oscar Zapper ...... WB4VXP 83 Digital SWR Computer...
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73 Magazine November 1972 (#146) The Traveling Ham ...... G3ZCZ/W3 5 Solid State Power ...... W6EI 15 TTL SELCAL for RTTY ...... W9ZTK 20 An IC TRF Receiver ...... W6DNS 29 The Mark II Electronic Keyer ...... W6JJI Emergency Power for home QTH ...... WA8OIK 37 High Power Mobile ...... W9NTP 42 220 MHZ Front End Using FETS ...... K1CLL 45 Double Delta Antenna ...... W2EEY 52 FMP Review ...... Staff 57 A Simple Converter for Beginners ...... WA8OIK 59 The Third Hand... Tester ...... WB4MYL 65...
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73 Magazine December 1992 (#387) The Techno-Whizzy 1, Part I - Build a direct digital synthesis (DDS) radio ...... N9JZW 8 The Key to Unlocking the HTX-100 - Improved RIT control ...... AC3L 20 Is 2 Meters Hazardous to Your Health? - How to calculate safety ...... N1II 28 Build a LiTZ Decoder - Touch-tone control your speaker for emergency alerts ...... KA5RZI, N7IOB 30 Iambic Keyer Paddles - A wide array of choices ...... N6HI 36 The Beach Brawley Boomer - QSOs made in the shade ...... NH6XK...
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73 Magazine December 1999 (#470) The X(Mas)-Files ...... Staff 6 Big-Time Bench Supply - This highly regulated SCR design might be overkill, but it's still fun to build ...... Sellen 10 Secret Death Ray - Or is HAARP a useful science tool? ...... N7MGT 14 TV Tutor - How to get started in SSTV ...... ZL1AAN 22 Why Not Renew On-line? - Here's how to untangle the FCC Web ...... AC3L 24 Read All About It! - Part 1 of Techno-Trivia from The Hertzian Herald ...... K8JWR 26 A Cold Meal and a Hot Radio...
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73 Magazine February 1977 (#197) Give That Professional Look to Your Home Brew Equipment - win prizes ...... McClellan 28 You Already Have an Atomic Frequency Standard - here's how to use it ...... WD8ASL 32 Give The Hamburglar Heart Failure - car alarm system ...... WA5KPG 36 Contest Special Keyer - has short but adequate memory ...... WA2KUO 38 The Chintzy 12 - a junk box wonder ...... W1OOP 40 You Can Sound Better With Speech Pre-emphasis - a simple circuit which will work wonders .........
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73 Magazine August 1994 (#407) Stand-Alone DDS - The Kendraboard provides PC-free frequency control...... VA3BH 10 A Novel Dual-Band, Single Feedline, VHF/UHF Antenna - Good performance for less than a sawbuck ...... W7KOH 26 Design and Build a Dummy Antenna - A 40W, 50 ohm AF dummy load with a VSWR 1.3:1 at 500 MHz ...... VE5ZE 30 The Coleman (Mini)-Kilowatt - Extend your station's working range for next to nothing ...... WB2WIK/6 53 Mini-Joystick Scanning - Shift your tuning into high gear!...
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73 Magazine May 1980 (#236) Home-Brew Rf Impedance Bridge - indispensable tool for antenna fans ...... WB6BIH 30 Rotary Beam for 10 or 15: the LB-2 - eliminates nasty matching problems ...... W6TYH 36 The 20-Meter Double Bobtail ...... W8HXR 44 Simple Switcher - a remote antenna switch with no control wires ...... WB5SFB 48 Taming the Monster Quad - a four-element blockbuster you can build ...... WA4JQS 50 For Cheapskates Only: A No-Frills Tilt-Over - requires a friend with a welding rig .........
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73 Magazine June 1967 (#81) The Whole of the Doughnut - Toroidal coils for kilowatt amplifiers ...... W4BRS 6 A 1296 Grid Dipper - 1050 to 1320 MHz with a converted APX-6 ...... W1DTY 16 Using FETs in the Command Set Transmitter - Results in a very stable VFO ...... K3LCU 23 The Dichotomy of a Tube Man - Putting on FET in the BC-906 frequency meter ...... W5SOT 26 Converting the Swan 120 to 6 Meters - Be prepared far the six meter openings this fall ...... K6RIL 28 Military Quartz Crystals for...
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73 Magazine April 1977 (#199) Shoot the Moon! ...... K3BPP 44 Frustrating The Thieves ...... WB0GGT 46 Automatic Autopatch Release ...... WA1RTD 52 Emergency 911 System ...... WA2RXQ 54 The Downspout Vertical ...... K8ANG 55 RTTY? What's That? ...... WA6CPP/WA7PEI 56 Do-It-Yourself Photosensitizing ...... KL7AE 57 Making Your Own PC Boards -Part II ...... Smith 58 Curing Mobile Noise Miseries ...... G3BID 64 An Intelligent RTTY Station ...... K7YZZ 72 Interrupts Explained! ...... ZL1TRM 76 CW...
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73 Magazine August 1980 (#239) The Soft Mount -mobile mounts enter the space age ...... W2QFC 32 Notes from Big Sky Country - the further adventures of Dr. Hess ...... W6CK 36 Meet the Little Giant - everyman's sheet-metal tool ...... K4JHN 46 On Ten FM - home of the free, land of the brave ...... WB2EQG 52 The Rains of Morvi - duty in disaster for Indian hams ...... VU2ST 60 Those Fabulous Fifties - an era in retrospect ...... W1FK 64 Trash All Your Worries - Baron Von Rhonstead and the RFI...
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73 Magazine February 1978 (#209) Inexpensive EKG Encoder ...... WA3AJR 20 What Are They Showing On SSTV? - have you been missing something? ...... K4TWJ 24 Build A Better Phone Patch - hybrid -op amps-the works ...... Poirier 28 Drake TR-4CW Review ...... K4TWJ 30 Build A 3-1/2 Digit DVM ...... WA5VQK/5 40 Clean Up Your Tochtone Act ...... WA6THG 44 The Tempo 2020 -satisfaction tells all ...... WA2KOK 48 Repeater Procedure ...... WB4NAY 52 Tighten Up Your SB-102 ...... W2POG 53 QRP Hints .........
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73 Magazine March 1982 (#258) The Porta-Peater The Instant Communicator - quick and easy does it ...... WA2BHB, AC2A, WA2UNN 12 Amateur Television's Stripper - a home-brew star ...... VE3CYC 20 Polishing Kenwood's R-1000 - a gem in the rough ...... K9EUI 34 Peaking and Tweaking Surplus CB Boards - the untold story ...... WB0NPN/8 38 OSCAR Pathfinder - a colorful way to track the satellites ...... WB6NQK 46 Which TVRO Antenna Is Best? - Satellite Central, Part IV ...... Gibson 52 Home-Brew a...
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73 Magazine June 1977 (#201) Two Meter Scanner - for the IC-230 ...... K3JML 46 Try the Mini-Timer - prevents HT timeouts ...... WA2UMY 48 High Frequency Utility Converter - handy test rig for any shack ...... K4DHC 50 RTTY Scratchpad Memory - after this, try a UART ...... VE3GSP 54 Build This CW Filter - darned good ...... VE3EXA 55 The London Bus Tuner - effective for short antennas ...... Staff 56 The W1BB Story - a visit with the king of 160 ...... WB1ASL 58 Ten Watts on 2 - it's possible...
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73 Magazine March 1980 (#234) Good-Bye to Autopatch Hassles - low-cost remedies to common problems ...... WB2LEI/4 30 Baudot-ASCII Converter Follow-Up - add a FIFO buffer for typing ease ...... VE4YD, VE4CM 34 CB to 10 - part XXII: more talk power for the TRC-11 ...... N4APN 38 The L With It - an alternative to the variable inductor ...... K4KI 40 Future Rig and Rigamarole - are you ready for faster-than-light propagation? ...... W6HDM 44 Gone But Not Forgotten - supermods for the HW-2021...
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73 Magazine January 1979 (#220) The Italian Freq Generator - from Bologna to you ...... K7YZZ 24 Happiness is a WE-800 - proud owner loves his Wilson ...... K3JML 28 Explore the World of VLF - with this simple converter ...... W3QVZ 32 The S.H.A.F.T. - special tuning gadget for sightless hams ...... K5CW 34 A Remotely-Tuned Matchbox - ultimate operating ease ...... W4PSJ 38 Diodes of the Dead - eavesdrop on the great beyond ...... K5JRN 44 Building an Economy Receiver - junk box, here I come!...
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73 Magazine November 1981 (#254) The Satellite TV Challenge - 73 magazine's answer ...... N8RK 14 Space Spinoffs for Amateur Radio - the makings of a communications revolution ...... WA1DCP, W2IKQ 18 How Big A Dish? - Satellite central, part 1 ...... Gibson 20 Satellite Channel Guide - Part 1 ...... WESTSAT 24 Satellite TV Receivers - is there a better way? ...... K4TWJ 26 Spread Spectrum - a report from AMRAD ...... WB3KDU 32 A Visit with SV0AY - the road to paradise ...... N1BEP 36 Review:...
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73 Magazine March 1977 (#198) Pitcairn Island ...... VR6TC 28 How Do You Use ICs? - Part VI ...... WA2SUT/NNN0ZVB 36 Low Voltage Power Supply ...... VE3CWY 38 QLF? Not With the Great Lakes Sideswiper! ...... W6VX 44 The Capacitor Comparator ...... WB4MYL 49 Logical Storage for Logic ...... Stanfield 50 CB Can Do Some Things Better ...... Norman 56 A New Breed of Voltage Regulators ...... WA7ABV 62 High-Quality Video Display ...... WABVNP 72 Save Time with a Micro OS ...... Ferguson, Ferguson 90...
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73 Magazine March 1969 (#102) Modifying the TCS Transmitter - A useful piece of surplus gear ...... K3UUL 6 A $4 Compressor Pre-Amplifier - More speech for less money ...... W2EEY 10 Reactance or Impedance - Answers to a lot of old questions ...... K9ZPZ, K9DRB 14 Weather Snooper - Eavesdropping on the aircraft WX frequencies ...... K6ZFV 18 The Charmin' Keyer - The solid-state keyer ...... W9HXM 22 Amateur Radio Knows No Borders - Saving a life across the Iron Curtain ...... Staff 32 A Better...
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73 Magazine June 1966 (#69) The Micro-Ultimatic - 73 scoop: integrated circuits in a high-performance keyer ...... W1CFW 6 A Transistorized Scope - Another ham scoop: use transistors for deflection amplifiers ...... K8ERV 14 50 Watts on 50 MHz for $50 - This project should prove popular ...... K1CLL 18 Two Meter Transistor Converter - Cheap, simple and works well ...... W6AJF 24 220 MHz Transistor Converter - Grounded emitter or grounded base, too ...... W6AJF 30 432 MHz Transistor Converter -...
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73 Magazine March 1975 (#174) Can a 7 foot 40m Antenna Work? - The small loop ...... W0PJG 33 The Secret of Antenna Gain - (Shhh -it's capture area!) ...... K2OAW 39 Twinlead Phased Array - Two elements on 40m - or any other band ...... WB2NQT 47 The Incredible Capacitive Antenna - Now: an 18" allband antenna ...... W0KGI 49 An 80m Phased Array - Switchable directivity ...... W2OZH 52 A Coax Amplifier for 450 MHz - 6 dB stacked collinear ...... W5GDQ 58 Invisible Antennas - Why ask for...
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73 Magazine December 1978 (#219) A DXer's Dream Vacation - try sunny Montserrat ...... WB6JPZ 30 Close Encounters - the eyes of Texans are upon them ...... K8NQN 36 The Schizophrenic Triangle - a split-personality radiator ...... WA4JTJ 44 From CW to Computers - a digital modulation primer ...... N6RY 48 A 28 Cent Touchtone Mod - something for (almost) nothing ...... W9CGI 56 Space Age Surplus - your own Saturn V? ...... Endress, Endress 60 An X-Band Transceiver - more 10-GHz fun ...... W1SNN...
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73 Magazine January 1983 (#268) Action Machine for 20 - Are home-brew rigs a lost art? No yet! Here's an SSB transceiver you can build ...... WB5IPM 12 An Alarming Procedure - This false-proof repeater emergency alert won't tie up expensive equipment ...... WA1LCF, K1FNX 24 Trimming the Fat from ATV - Why use 3 MHz when 500 kHz will do? WB6FHD proposes a way ...... WB6FHD 32 The Forgetful Autodialer Puzzle - Even Sherlock couldn't figure out how to make an autodialer that reprograms with no...
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73 Magazine March 1993 (#390) Constructing High Current Power Supplies - Practical considerations learned through experience ...... KE9ED 10 Fiber Optics and Amateur Radio - Is fiber-optic technology in our future? ...... AJ0N/LA6US 14 Digital Satellite Gateway Nodes - How to get on OSCAR 22 with an HT ...... WA0PTV 19 Clock It Quick - Tame ripple counter chips ...... Arnoid 22 Dual Half-Wave Antenna - A ground independent antenna with gain ...... KE2QJ 26 Active Antenna Using a MOSFET - Build...
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