Skip to main content

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.



rss RSS

514
RESULTS


Show sorted alphabetically

Show sorted alphabetically

SHOW DETAILS
up-solid down-solid
eye
Title
Date Published
Creator
73 Magazine (Amateur Radio Today)
texts

eye 15,701

favorite 2

comment 0

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)
texts

eye 5,857

favorite 2

comment 0

73 Magazine January 1987 (#316) Announcing: 73 Magazine's DX Dynasty Award - We decided that it was about time someone started DXCC over from scratch! Here's how you can join in the frenzy of DXing's newest and hottest award ...... Staff 27 A Power Supply Primer: Part II - Now that you've rectified the wall socket's ac, you've got to do something about all of those crazy ripples ...... K4IPV 28 Operators Aren't Standing By - Solve your remote-control problems once and for all with this...
Topics: amateur, radio, mhz, antenna, ham, print, output, frequency, filter, amateur radio, print print,...
73 Magazine (Amateur Radio Today)
texts

eye 13,385

favorite 2

comment 0

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...
73 Magazine (Amateur Radio Today)
texts

eye 17,245

favorite 0

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 14,689

favorite 5

comment 0

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)
texts

eye 12,035

favorite 8

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 19,190

favorite 3

comment 0

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...
73 Magazine (Amateur Radio Today)
texts

eye 17,116

favorite 3

comment 0

73 Magazine June 1982 (#261) Build This Digital Vfo - a microprocessor makes it simple ...... WA5VQK 12 Surviving the Unthinkable - part II : some practical ideas ...... AK0Q 30 A Split Personality for the KDK FM2015R ...... K0BV 40 Building for Beginners - happiness is a hot soldering iron ...... N1II 42 Coping with PC Boards - it's not easy to be virtuous ...... KC7M 48 'Lite Receiver IV - the second half ...... WA4CVP, WA4OSR 52 TVRO Transducer - waveguide-to-coax transition ...... WA4CVP,...
Topics: mhz, amateur, radio, antenna, frequency, kit, magazine, receiver, ham, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 17,240

favorite 1

comment 1

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...
favoritefavorite ( 1 reviews )
Topics: amateur, radio, mhz, kit, antenna, power, meter, frequency, circuit, repeater, circuit board,...
73 Magazine (Amateur Radio Today)
texts

eye 16,263

favorite 1

comment 0

73 Magazine December 1982 (#267) The Hangman's 2-Meter Collinear - Make your tower do double duty. Drop this array from the top and get 6-dB gain ...... W1GV/4 10 Deep-Six Squelch Tails - Kerchunks take a dive with the addition of this audio delay ...... WA2NYE 14 Build Yourself A Paralyzed Beam - Go from east to west In less than a second with this 2-meter array. And put your rotator out to pasture ...... WB2WIK 24 Taming the 2-Meter Linear - It lives In the forest of spurious oscillations and...
Topics: antenna, mhz, frequency, amateur, power, radio, audio, receiver, rtty, magazine, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 7,980

favorite 1

comment 0

73 Magazine April 1992 (#379) The Arrow Antenna - Hit the bull's-eye with this portable VHF sharp shooter ...... KA0VFF/N0IMW 10 The Plumber's Delight - A new look for the J-pole! ...... KB6EPO 16 The Flower Pot Special - Plant your antenna! ...... N1GPH 18 The Rock Bender QRP Transmitter - Win QSOs and influence crystals ...... WI5W 22 Monoband Yagi for 20 Meters - More dBs for the buck ...... AB4GX 30 The SAM1 Transverter - For the challenge of LF/VLF ...... WD4PLI 36 Heil HM-10 Dual and...
Topics: antenna, amateur, mhz, frequency, meter, amateur radio, repeater, radio, feedback card, radio...
73 Magazine (Amateur Radio Today)
texts

eye 11,648

favorite 2

comment 0

73 Magazine November 1984 (#290) Color Computer SSTV: Part I - Turn your CoCo into a complete SSTV terminal How? First, build this high resolution display system ...... K6AEP, WB8DQT 10 Wrap Up TVI! - Can you endure another evening without transmitting? Use this simple cure to choke out television interference forever ...... KR7L 26 But I Know How To Solder! - Anyone can dribble hot metal over a joint, bit it takes an artist to really solder. Are you a Picasso or a pig? ...... WD4S 28 Free-Form...
Topics: amateur, mhz, radio, filter, antenna, frequency, display, magazine, circuit, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 7,290

favorite 0

comment 0

73 Magazine February 2003 (#507) Cheap & Easy Portable HF Vertical - Try this medium-weight, sturdy, neat, visually pleasing, fun to use ...... K8MKB 10 Troubleshooting Computer Power Supplies - Rule # 1: Be careful ...... W6WTU 14 Build This Simple SMT Station - Dinner and a movie? How about pizza and a project? ...... AA2JZ 23 How's That Thing Really Work, Anyway? - Part 1: Receivers ...... AA2JZ 25 Warblemania - and other QRP afflictions ...... NY9D 27 Breakdown in Cape Town - The...
Topics: radio, amateur, antenna, power, mhz, voltage, frequency, laser, amateur radio, radio today, power...
73 Magazine (Amateur Radio Today)
texts

eye 11,197

favorite 0

comment 0

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...
73 Magazine (Amateur Radio Today)
texts

eye 17,814

favorite 4

comment 0

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...
Topics: mhz, frequency, power, radio, amateur, antenna, output, kit, meter, circuit, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 11,713

favorite 0

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 12,062

favorite 2

comment 0

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)
texts

eye 11,617

favorite 1

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 7,062

favorite 1

comment 0

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...
Topics: radio, antenna, amateur, mhz, frequency, ham, meter, ghz, output, amateur radio, radio today, ham...
73 Magazine (Amateur Radio Today)
texts

eye 14,361

favorite 1

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 8,153

favorite 2

comment 0

73 Magazine August 1993 (#395) A Decade of Packet - An anthology of 73 packet radio articles from 1983 to 1993 ...... WA1RZW 10 FM Packet Deviation Meter - Put your packet station on the money for 20 bucks ...... N5OWK 22 Julieboard - An easy-to-build DDS synthesizer for the PC printer port ...... VE3JIL 40 Computer Control for Beam Antennas, Part I - Give your station a smart, new twist ...... K4OND 54 PC Pakratt for Windows - Love at first byte ...... N1EWO 28 The STARTEK ATH-15 Portable...
Topics: radio, amateur, packet, mhz, ham, antenna, digital, power, repeater, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
texts

eye 13,120

favorite 1

comment 0

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...
73 Magazine (Amateur Radio Today)
texts

eye 8,296

favorite 2

comment 0

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...
Topics: antenna, amateur, frequency, ihe, mhz, magazine, receiver, output, tor, amateur radio, toll free,...
73 Magazine (Amateur Radio Today)
texts

eye 12,865

favorite 1

comment 0

73 Magazine October 1982 (#265) The Splattometer - visual overmod warning ...... W1BG 10 Digital Basics - part II ...... K4IPV 20 Dissertation Upon Roast Pig - the ultimate in surplus? ...... N6TO 28 Got an Apple? Want RTTY? - try this hard-core interface ...... WB6FBN/4 34 The Pleasures and Perils of Crankup Towers - don't lose your head! ...... K4TWJ 40 The Incredible Antenna Mark 2 - a complete HF allbander in a very small space ...... KL7ISA 44 The Amazing Beam reader - point it with your...
Topics: antenna, output, amateur, mhz, power, magazine, radio, ham, por, power supply, amateur radio, toll...
73 Magazine (Amateur Radio Today)
texts

eye 11,188

favorite 2

comment 0

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...
73 Magazine (Amateur Radio Today)
texts

eye 12,220

favorite 0

comment 0

73 Magazine July 1982 (#262) Log of the Colorado Queen - wet, wild Field Day fun ...... K3PUR 12 CB to CW? - converting the Hy-Gain board ...... W1BG 18 Hands Across the Water - CW lives on historic Cape Cod ...... KAID 38 A Three-Piece CP - battery not included ...... WB5WAF 46 Coherent CW for VHF - will it work? ...... W3QVC, VE3DPB 48 Electric Health via Negative Ions - combating an invisible menace ...... WB0GX 52 The Very, Very Best CW Filter? - costs under ten bucks ...... WB4TYL, AG5G 56...
Topics: mhz, amateur, antenna, frequency, radio, power, magazine, receiver, circuit, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 7,123

favorite 0

comment 0

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...
73 Magazine (Amateur Radio Today)
texts

eye 18,760

favorite 3

comment 2

73 Magazine May 1982 (#260) Pacific Odyssey - the Kingman/Palmyra adventure ...... KB7NW 12 Top-Notch for Top Band - super antennas for 160 ...... N3BEK 26 The Fun-Amp - 20 Watts out ...... WA0RBR 32 The CCD Antenna Revisited - does it measure up on 40m? ...... W4ANL 40 Antenna-Raising: The Good-Neighbor Policy - sidestepping civil war ...... AK5Q/4 42 'Lite Receiver IV - part I: building it is a breeze ...... WA40SR, WA4CVP 48 TVRO Sound Decoders - Satellite Central, part VI ...... Gibson 58...
( 2 reviews )
Topics: antenna, amateur, mhz, radio, magazine, tor, power, frequency, pth, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 13,210

favorite 3

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 12,683

favorite 0

comment 0

73 Magazine July 1979 (#226) A Visit to Antenna Specialists - Wayne tours the test range ...... W2NSD/1 30 Secrets of Guyed Towers - put 'em up and keep 'em there ...... WB3BQO 34 Death-Defying PL Mod for the KDK 2015 - not for the squeamish ...... W8GQL 40 Feed-Horn Mounting Made Easy - solution to a pesky problem ...... WB8DQT 44 Antenna Tuning Joy Revisited - remember the Tektronix 190B? ...... W9CGI 48 Modern Solid-State Equipment Design: A Better Way - sorry, tube fans ...... W4RNL 52...
Topics: antenna, khz, mhz, amateur, meter, frequency, tower, radio, tion, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 8,677

favorite 1

comment 0

73 Magazine December 1989 (#351) VOX for HTs - No-hands hand-held hamming ...... KA8HML 9 Two Meter Mobile Rig - Sick of anemic HT mobile operation? Pep up your handie with this booster ...... N8KDD 22 Poor Boy Satellite Station - Coat hanger + SO-239 connector = Mode A uplink antenna! ...... N5LKJ 24 Color SSTV for the Atari ST, Part I -Fast and easy way to get on this fascinating mode ...... WB2OSZ 38 Yaesu FT-470 2m/70cm HT - Two meters and 70cm in a micro-sized hand-held ...... KB1UM 18...
Topics: amateur, radio, antenna, ham, mhz, repeater, frequency, yaesu, band, amateur radio, feedback card,...
73 Magazine (Amateur Radio Today)
texts

eye 9,749

favorite 0

comment 0

73 Magazine August 1979 (#227) You Can Watch Those Secret TV Channels - a complete MDS receiving system ...... K0JB, K0FQA 32 Simple Dual-Voltage Supply - power for many projects ...... W4VCZ 44 Bargain Zener Classifier - Novice project ...... WD8AAM 46 What the Hell is a Decibel? - 1/10 of a bel, of course ...... WA5EBB 48 Frosting for the FT-901DM - simple improvements for Yaesu's superb performer ...... K4TWJ 50 Mods for the Mark - desirable extras for your Wilson HT ...... K9EID 52 The...
Topics: antenna, amateur, mhz, radio, meter, power, voltage, frequency, output, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 11,439

favorite 0

comment 0

73 Magazine February 1981 (#245) Winter Olympics Torch Run - a one-year perspective ...... KA2CNN/AAR2DE, KA2DBW 36 New Life for Old Klystrons - tips for microwave experimenters ...... WA4WDL 46 Add RTTY to Your Repeater - voice operation is preserved ...... WB4EMI 48 A Patch for the TS-120s - add phone patch compatibility ...... W5JJ 50 Successful Ham Classes - a guide for club organizers ...... WB1FOD 56 How FCC Rules Are Made - a labyrinthine tale ...... WD4DAZ 62 A $10 Phone Patch - CQ Ma...
Topics: mhz, frequency, antenna, amateur, power, repeater, magazine, radio, amateur radio, rtty, credit...
73 Magazine (Amateur Radio Today)
texts

eye 12,367

favorite 1

comment 0

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)
texts

eye 8,095

favorite 1

comment 0

73 Magazine September 1991 (#372) The Square Pancake Antenna - A 20-inch square marvel! ...... W2SMR 18 Indoor 10 Meter Beam - A 2-element "invisible" coaxial antenna ...... N9CAP Economical Mobile HF Antenna - Modify a Radio Shack CB antenna for the HF bands ...... AA6NG 26 DXDA Awards and Countries - The latest update, thanks to Bob Reed WB2DIN ...... Staff 30 Dual-Band Vertical - This one's for the 160 and 1750 meter bands ...... WD4PLI 38 The L-O-N-G Long-Wire - What is it like to...
Topics: antenna, radio, amateur, ham, island, amateur radio, meter, mhz, ham radio, radio today, feedback...
73 Magazine (Amateur Radio Today)
texts

eye 11,505

favorite 3

comment 0

73 Magazine December 1972 (#147) AFSA IV SSTV Analyzer - Also works for RTTY ...... W0LMD 17 Single Conversion 2m FM - No 455 i-f needed - honest! ...... K1CLL 23 Miniature Tone Encoder - Fits inside the mike ...... WA9VGS 29 Tone Burst Decoder - For repeaters and such ...... W3JJU 33 Universal I-F Amplifier - Like for a 2m panoramic receiver ...... DJ1SK 38 Touch-Tone Connections - For repeaters ...... K3DSM 43 Simplest Audio IC Yet - Six parts and a battery! ...... W6YBP 49 Using Varactors -...
Topics: amateur, frequency, mhz, radio, voltage, circuit, repeater, meter, output, tuning, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 8,629

favorite 0

comment 0

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 .........
Topics: mhz, frequency, antenna, kit, meter, receiver, khz, power, repeater, amateur, power supply, low...
73 Magazine (Amateur Radio Today)
texts

eye 7,274

favorite 0

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 10,942

favorite 0

comment 0

73 Magazine July 1980 (#238) The Rites of Spring - Dayton does it again ...... N1AUI, WB8BTH, KA1HY 30 One Step at a Time: Designing Your Own Ham Gear - part II ...... W4RNL 36 Top-Banding the DX-60B - put a classic rig on a classic band ...... WB1ASL 44 Forward into the Past! - a solid-state restoration project for a vintage BC receiver ...... W5JJ 48 ADDSCAN - now you can be two places at once ...... WB9FSC 52 Flat Cells are No Fun! - build a battery status monitor ...... WA3ENK 56 When Plus...
Topics: radio, amateur, mhz, frequency, power, ham, antenna, signal, magazine, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 12,868

favorite 1

comment 0

73 Magazine February 1984 (#281) This Antenna Is Too Good To Be True - It's cheap. It works well on all bands. And it radiates a super signal ...... W4HDX 10 Construct the Minuteman Timer - As faithful as a grandfather cock. This timer tells when to ID - and when not to ...... KA8QBQ 14 The Secret of Remote Control - In Inside those miniature planes lie some sophisticated circuits ...... WB3BQO 18 Calculate Your FT-101 - Here 's how to treat your trusty FT-101 to a truly automatic digital...
Topics: amateur, antenna, radio, erm, mhz, frequency, tor, magazine, output, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 7,314

favorite 2

comment 0

73 Magazine October 1960 (#1) Audio Booster - A three transistor amplifier that hooks across the mike to give you more talk power for SSB or AM without distortion ...... K5JKX/6 Something New in FM - Using the new varicap as a FM modulator ...... W7CSD 10 Bantam Converters - Two-tube VHF converters for 50-108-144-152-220 MHz bands ...... W9DUT 12 Risky Hobby - How to fall off your tower for fun and profit ...... K9AMD 16 Tubeless Electronic Key - Just uses some relays. Also tells how to convert...
Topics: amateur, power, voltage, audio, radio, modulation, receiver, ham, meter, frequency, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 7,468

favorite 2

comment 0

73 Magazine July 1983 (#274) You Can Build This Code Trainer - More than a mere code-practice oscillator this CPU-controlled trainer features burned-in practice groups Flick a switch and you have a keyer ...... K7ZOV 12 The True Story Behind Heard Island - Fighting bad weather, shady ship owners, and bad press, the HlDXA expedition forged its way to the DXer's dream. But getting there was only half the battle ...... VK9NL 20 More Stable Than a Rock - An Honorable Mention winner in 73's...
Topics: amateur, mhz, antenna, frequency, ihe, radio, output, tor, magazine, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 14,846

favorite 0

comment 0

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)
texts

eye 15,677

favorite 2

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 6,761

favorite 0

comment 0

73 Magazine May 1988 (#332) Why Do Satellites? - More reasons than you can argue against ...... N5BF 11 UoSATS - Space science from Surrey ...... N5AHD 20 OSCAR History - Project OSCAR is nearly 30 years old ...... K6LFH 27 Hamsat Awards - Set your sights high ...... WB5RMA 30 Hard-Line Connector - A little work saves a Lot of money ...... W5PFG 32 Uncle Wayne's Ham Shack Winners - The happiest hams of the month ...... 34 Winnebiko Power Supply - New technology in a practical package .........
Topics: amateur, radio, satellite, amateur radio, feedback card, mhz, repeater, oscar, frequency, antenna,...
73 Magazine (Amateur Radio Today)
texts

eye 5,665

favorite 1

comment 0

73 Magazine September 1972 (#144) Plumbicon SSTV Camera - Cheapskate approach to slow scan ...... K7YZZ 10 WWVB Receiver - 60 kHz comparator receiver ...... W7LHL 16 Audio Signal Generator - A tube circuit? Yes, cigar tube ...... WA6QVQ 27 The CW Excavator - Remarkable audio filter ...... W2GOM 30 Exploring the Microwaves - Antenna and test receivers for 1296, 2300 and 3500 kHz ...... K1CLL 38 Balun Up or Balun Down - Advantages, disadvantages, and how to use ...... G3BID 49 Another Solid State...
Topics: frequency, mhz, khz, output, receiver, circuit, amplifier, signal, input, filter, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 8,391

favorite 2

comment 0

73 Magazine May 1981 (#248) Two-Meter Antennas: Facts and Fables - the truth about omnidirectional antennas on two ...... W1IS 12 The 440-MHz Curtain - hang this broadbanded two-bay collinear on your tower and get 22 dBi to play with ...... WA9OZC 22 The Plumber's Parabolic Mount - a first-class hydraulic system ...... WD4MRJ, KA4JYD 28 The History of Ham Radio - part XIV ...... W9CI 36 The Skeptic's Multiband Ground Plane - This antenna flies in the face of accepted theory. Do you think it...
Topics: antenna, amateur, radio, mhz, frequency, magazine, antennas, tion, ham, amateur radio, radio club,...
73 Magazine (Amateur Radio Today)
texts

eye 8,468

favorite 0

comment 0

73 Magazine September 1983 (#276) "10... 9... 8..." - Be ready when the Space Shuttle Columbia carries aloft the first astro-ham. Here's the best way to contact this historic DXpedition ...... WA6ITF 8 Join the Packet-Radio Revolution - Get error-free, high-speed communications -Packet radio's chief architect, WA7CXD, explains what it is and how it works ...... WA7GXD 16 Be a RTTY Rembrandt - Put that award-winning shine on your RTTY pix with these tips from a RTTY artist's sketchbook...
Topics: amateur, radio, rtty, ihe, antenna, mhz, tor, magazine, ham, amateur radio, power supply, toll...
73 Magazine (Amateur Radio Today)
texts

eye 7,830

favorite 2

comment 0

73 Magazine July 1976 (#189) Handy Dandy Soldering Iron Cooler Offer ...... WB4FDQ 18 Perfect CW - drive 'em crazy with the Keycoder I ...... WA9VGS 20 The Mini-Mite All-band QRP Rig - runs a mighty seven Watts ...... WA7SCB 30 A Fun Counter Project - an invaluable test instrument for under $50? ...... Plavcan 36 Build a FAX from Scratch - then get satellite pictures and other things ...... W4NK 44 Der Repeatermeister - repeater control, with ID ...... WA1UFE 58 Lightning and Thunder and Other...
Topics: output, power, circuit, kit, antenna, mhz, clock, pin, amateur, frequency, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 12,727

favorite 2

comment 0

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...
73 Magazine (Amateur Radio Today)
texts

eye 12,200

favorite 4

comment 0

73 Magazine January 1993 (#388) The Techno-Whizzy 1, Part II - Build a direct digital synthesis (DDS) transmitter ...... N9JZW 10 Programmable-Frequency Audio Generator - High accuracy with digital control ...... Redman 16 The SP-1 Transceiver - Build the HF "Spider" ...... WA8TXT 24 Twin Crystal Ladder Filters - Upper or lower sideband filters using inexpensive crystals ...... N2DCH 32 Handi-Beacon - Turn your tape recorder into a beacon controller ...... WB9YBM 38 The Down East...
Topics: radio, amateur, mhz, antenna, output, power, frequency, repeater, digital, amateur radio, radio...
73 Magazine (Amateur Radio Today)
texts

eye 10,435

favorite 1

comment 0

73 Magazine December 1970 (#123) Solid State Exciters - For the build-don't-buy crowd ...... W6YUY 16 Solid State Control for SSB Exciters - For really smooth tuning ...... W4NVK 28 Hams Are A Funny Bunch of People - Except me and thee ...... K3KMO 31 A 2 Meter Minitransmitter - Hand portable for FM repeaters ...... WB6BIH 32 Receiver Offset Tuning for the HW100 - For tuning in old timers who can't stay on frequency ...... WAZEAW 39 The Little Gate Dipper - 1.7 - 225 MHz GDO with no G .........
Topics: amateur, voltage, frequency, cathode, radio, power, circuit, antenna, output, input, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 6,183

favorite 0

comment 0

73 Magazine August 1989 (#347) Find Your Signal the First Time! - How to quickly deal with Doppler shift on the hamsats ...... AA6CQ/VE6 44 JEZ-Jugendelektroniczentrum - First-class ham education program ...... HB9DU 46 CTCSS, Fast and Cheap - Simple PL tone board project ...... N6UE 13 COCOA-A COllinear Coaxial Array - Deluxe 80m wire antenna ...... W2OZH 34 Control Your Rig from a PC - This project lets your rig and home computer talk to each other ...... N7IPY 34 Full-Wave VHF Vertical...
Topics: radio, amateur, frequency, antenna, mhz, kam, meter, signal, ham, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 11,368

favorite 0

comment 0

73 Magazine December 1987 (#327) Welcome, Newcomers! - A "read-this-first" for budding hams ...... KA1HY 5 History of the ICOM 2AT - The world 's most popular handheld ...... KT2B 18 ICOM BP-4 Charging Adapter - Our technical editor beats the system ...... WB9RRT 20 Yaesu FT-209 Modifications - Expanding your HT's horizon ...... KD2WA 26 Buyer's Guide to Handhelds - A little help from your friends at 73 ...... NA5E 28 History of Hand-Held Communications - Their place in western...
Topics: radio, amateur, mhz, antenna, frequency, kenwood, icom, power, battery, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 7,435

favorite 0

comment 0

73 Magazine June 1990 (#357) The Field Day Special The "Ray Gun" - A concentric combo Mode B antenna ...... KA5DNP 10 TNC Connect Alarm - Did anyone call while I was out? ...... DA1AU/WB9EGA 14 COSIN: The COmputer Student Information Network - High school credits for ham radio ...... WB2MIC 18 Big But Cheap! - Put a big signal on 40 meters for under $20 ...... K1NIT 22 Two Meter Portable Quad - Sturdy, easy to build ...... K3YWY 24 Tune in on the New Frontiers of VLF - A simple...
Topics: radio, amateur, antenna, ham, mhz, ihe, hams, fcc, icom, kit, amateur radio, ham radio, feedback...
73 Magazine (Amateur Radio Today)
texts

eye 11,558

favorite 4

comment 0

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...
Topics: amateur, radio, kit, output, repeater, fcc, mhz, ham, frequency, circuit, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 8,819

favorite 1

comment 0

73 Magazine September 1984 (#288) Counter-Productive Basics: Part II - How hard can counting be? K41PV tells us where the errors occur and how to fix them ...... K4IPV 8 Elementary, My Dear: Watts 'n' Swr - Stop guessing. Build this no-nonsense VHF/UHF wattmeter and save your hard-earned cash ...... KT2B 14 Perfect Timing - Proud of your repeater? Construct this multi-talented identifier and tell the world your who, what, and where ...... VE2DWG, VE2AO 22 Quick Qwip Conversion Fax - Seeing is...
Topics: amateur, radio, mhz, antenna, frequency, rtty, ihe, contest, magazine, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 12,663

favorite 1

comment 0

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...
73 Magazine (Amateur Radio Today)
texts

eye 15,584

favorite 5

comment 0

73 Magazine December 1977 (#207) Inside Ten-Tec - QRP innovators ...... K4MDK 34 The History of Ham Radio - part V ...... W9CI 38 Try BCB DX! - when you're tired of twenty ...... WB2BJH 42 Build An Engine Analyzer - use your scope! ...... WA6THG/KH6 46 More Repeater Control Devices - control unit/audio interface ...... W7JSW 50 How Do You Use ICs? - part VIII ...... WA2SUT/NNN0ZVB 56 Finally! A Practical Discriminator! - metering system, that is ...... K4GOK 62 A Kilowatt Alternative - try a...
Topics: mhz, frequency, amateur, kit, circuit, power, radio, output, antenna, meter, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 5,791

favorite 2

comment 0

73 Magazine November 1963 (#38) Another Approach to TVI - Harmonic Reduction ...... K5JKX 8 432 MHz Converter - Using the Navy surplus CFN-46ADT ...... W5AJG 16 The Perfect Match ...... VE3DGV 24 SWR/PWR Meters ...... W2KPE 28 All-Band Conical Antenna ...... W5VOH 32 Tool and Workshop Section ...... W2RWJ 40 AC Adaptor ...... W5KKB 42 Come-a-Longs ...... K4FQU 44 Of RTTY - And the TUZ terminal unit ...... W3TUZ 48 73 Tests the Hallicrafters SK-140K ...... W3UZN 62 The Amateur's Cope Canaveral...
Topics: tlie, amateur, radio, power, antenna, frequency, meter, ham, receiver, transmitter, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 7,983

favorite 1

comment 0

73 Magazine May 1985 (#296) Discover the Discone - Is this the perfect aerial? Consider simple wire constrcution, easy one-time tuning, and flat swr from 3.5 to 28 MHz ...... W1GV/4 17 Two for Two - We respectfully offer a pair of radiators for the two-meter band so elegant, yet so simple, that you will kick yourself for not thinking of them first ...... WA4BLC 22 The Snake with LED Eyes - A tall tale from the Antlers- wherethe decoration is strange and the stories are even stranger .........
Topics: antenna, radio, amateur, amateurs, tor, swr, mhz, hams, antennas, radio amateurs, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 8,276

favorite 0

comment 0

73 Magazine September 1980 (#240) In Profile: Dick Bash KL7IHP - the father of The Final Exam speaks out ...... N1AUI 40 That Mysterious Mode: 10 FM - an examination of propagation phenomena ...... WB2EQG 44 The World Above 430 - part II: next stop, 1296 ...... W9CGI 52 Bridge Over Troubled Audio - another method for driving speakers ...... K4IPV 56 Load a Lawn Chair - even if you can't carry a tune, you can build this matchbox ...... WB5PPV 60 The Penultimate CPO - a non-discrete LSI device...
Topics: mhz, output, frequency, antenna, power, signal, amateur, audio, kit, input, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 13,485

favorite 0

comment 0

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...
Topics: mhz, frequency, antenna, output, power, radio, amateur, audio, meter, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 7,372

favorite 2

comment 0

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,...
73 Magazine (Amateur Radio Today)
texts

eye 5,180

favorite 0

comment 0

73 Magazine April 1969 (#103) Dual-Channel Oscilloscope Pre-Amplifier - Convert your scope to a $1000 dual channel job. Save money ...... W3ZZY 6 Simplest RF Pre-Amplifier - Simple, new, very effective. Works, too ...... W1EZT 10 Education and Ecstacy - Reprint from LOOK Magazine re the "magic" of ham radio ...... Leonard 14 Push-to-Talk - Converting the Two'er for this valuable function. Beats LSMFT ...... VE3ETJ 16 Variable DC Load - For testing power supplies and things like that....
Topics: antenna, signal, mhz, volts, circuit, color, transistor, amateur, transmitter, voltage, power...
73 Magazine (Amateur Radio Today)
texts

eye 6,099

favorite 2

comment 0

73 Magazine November 1969 (#110) An Approach to Six-Meter SSB - Using an NCX-3 or other SSB transceiver ...... WA1FRJ 6 IF Notch Filter - For the last word in selectivity for your transceiver ...... W2EEY 14 Calibrate That Homebrew Dial - Accurate calibrations on any band ...... K9STH 18 Slow Scan Color Pictures - Using additive synthesis ...... WA2EMC 20 A Remote VFO for the HW32A - Split frequency operation simplified ...... AP2MR 22 Cheap and Simple for Six - Three transistor PC board...
Topics: frequency, antenna, circuit, signal, ssb, mhz, amateur, radio, output, power, power supply, amateur...
73 Magazine (Amateur Radio Today)
texts

eye 8,534

favorite 0

comment 0

73 Magazine April 1981 (#247) The History of Ham Radio - part XIII ...... W9CI 46 Build a Frequency Counter -That TALKS! - state-of-the-art for blind hams ...... WA0OHO 52 In the Stack - R/Cers, don't be grounded by control channel congestion! Put your ship on six! ...... WB3BQO 56 All the News that Fits - make your club newspaper a winner! ...... N9YL 60 My Infernal Tower - tales of aflying fiasco ...... KC7M 64 Apples: Five Bits or Eight - Tired of "Space Invaders"? Then turn your...
Topics: mhz, amateur, radio, frequency, antenna, ham, magazine, power, kit, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 7,293

favorite 0

comment 0

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...
Topics: radio, amateur, mhz, antenna, ham, frequency, meter, amateur radio, radio today, feedback card, ham...
73 Magazine (Amateur Radio Today)
texts

eye 5,950

favorite 2

comment 0

73 Magazine April 1986 (#307) The Dayton Hamvention '86 - The center of the ham radio universe ...... WA4BPI 20 Your Bridge Over Troubled Antenna Tuning - Is your antenna less than ideal? Put more fire in the wire ...... W3MT 24 Stretch the GP Antenna to the Max - This, the simplest of all antennas, has much to recommend it ...... GW3SB/G3SB 27 The Care and Feeding of a Curved Linear Array Antenna System - For low cost, very low maintenance, yet acceptable performance, try this antenna system...
Topics: antenna, radio, amateur, mhz, amateurs, print, ham, output, input, radio amateurs, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 6,388

favorite 2

comment 0

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...
Topics: circuit, output, input, amateur, khz, amplifier, frequency, antenna, signal, power, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 6,077

favorite 1

comment 0

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...
Topics: mhz, antenna, output, power, frequency, input, amateur, voltage, radio, magazine, amateur radio,...
73 Magazine (Amateur Radio Today)
texts

eye 14,973

favorite 1

comment 0

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...
Topics: antenna, amateur, mhz, radio, ham, output, tor, magazine, power, frequency, amateur radio, power...
73 Magazine (Amateur Radio Today)
texts

eye 10,015

favorite 0

comment 0

73 Magazine July 1984 (#286) Shoot at Will - KK2Y's Dayton mandate was to capture things on film. He did it. Enjoy a slice of Hamvention ...... KK2Y 10 Secrets of Cordless Phones - Is privacy sacred and range not? Maybe some hands-on research can help you decide ...... Haas 20 Modern-Eyes the S-Meter - Here's how to de-strain your baby blues by adding a simple LED readout ...... Patterson 24 Let's Have More Hams - Part I: How to organize and run a Novice class ...... AD0K 26 Let's Have More...
Topics: amateur, mhz, radio, antenna, magazine, repeater, frequency, tor, ham, amateur radio, power supply,...
73 Magazine (Amateur Radio Today)
texts

eye 6,019

favorite 0

comment 0

73 Magazine March 1988 (#330) Welcome, Newcomers! - Why just VHF antennas ...... KA1HY 4 Winnebiko - A close look at Winnebiko's 2 meter lifeline ...... N4RVE 12 10 meter Beam - With a little money you can gain a lot ...... N0BLX 14 Heath SB-200/220 Mod - More mileage out of a workhorse amp ...... VE5XZ 20 Ten Meter Meteor Scatter - DXing with a difference ...... WB5KYK 22 Mobile Antenna - Two meters on a broadcast band antenna! ...... W4JC 28 Antennas in the Spring - Spring cleaning above the...
Topics: antenna, amateur, radio, mhz, antennas, ham, frequency, amateur radio, feedback card, ham radio,...
73 Magazine (Amateur Radio Today)
texts

eye 6,971

favorite 1

comment 0

73 Magazine August 1992 (#383) The ViewPort VGA Color SSTV System - At last- a versatile slow-scan TV program and interface for the IBM PC ...... KA2PYJ 8 The Compact-A-Loop Antenna - 80 meters for the apartment dweller ...... G2BZQ 18 ATV Transmitter, Part I - Get on ATV easily and cheaply ...... K2MQJ, KA2CWL 22 The Explorer - HF receiver for 40 and 80 meters ...... K5WMS 30 Digital ALC - A simple way to get the best out of any transmitter ......N7APE 36 A Frequency Counter Upgrade - Accuracy...
Topics: amateur, mhz, radio, antenna, ihe, frequency, fax, audio, ham, amateur radio, radio today, power...