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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 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)
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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,...
73 Magazine (Amateur Radio Today)
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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)
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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 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...
Topics: mhz, output, frequency, amateur, antenna, repeater, power, meter, circuit, input, amateur radio,...
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,...
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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)
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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)
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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 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,...
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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 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...
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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 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 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,...
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73 Magazine September 1994 (#408) Compact 160 Meter Transmitting Loop Antenna - You don't need to move to a new QTH! ...... G2BZQ 10 The Discriminator - A directional receiving antenna for hams and SWLs ...... G2BZO 16 Low-Cost Transmission Lines - What you don't know can cost you ...... K5DKZ 22 The Challenge of 1750 Meters - No license required ...... WD4PLI/6 36 The HOFI Antenna Switch - Quality at every turn ...... WA4BLC 24 Computer Automation Technology's CAT 1000 and CAT 300 Repeater...
Topics: radio, antenna, amateur, ham, repeater, amateur radio, meter, mhz, ham radio, radio today, feedback...
73 Magazine (Amateur Radio Today)
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73 Magazine (Amateur Radio Today)
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73 Magazine October 1986 (#313) Just the FAX, Ma'am - Check out NOAA's eyes in the sky with this one-chip weather FAX decoder for your C-64 ...... WB8TPD 24 Make the Switch to PIN Diodes - Unbelievably fast, PIN diodes can drag your tube-bound transceiver into the 80s with silent switching ...... OA4KO/YV5 28 Shoestring Shortwave - Remember when rigs were built on pine bases? Try KICLL's converter for old time's sake ...... K1CLL 34 The End of the Rope - Some days you just want to mail your...
Topics: amateur, radio, antenna, mhz, repeater, frequency, receiver, ssb, power, amateur radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine February 1988 (#329) Welcome, Newcomers! - Low power isn't always a disadvantage ...... KA1HY 4 Hamming Around - High tech trekking ...... KA8OVA 11 1750 Experimenters Band - Fun VLF transverter ...... WD4PLI 20 The Winners (Who says there's no action at 23 cm?) ...... 27 20 meter Mini Receiver - Super small superhet ...... K1BQT 28 Intro to 1750 meters - The lowdown on license-free fun ...... W2IMB 31 Drifting Along the Telegraph Trail - Landline brass pounding -looking back .........
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73 Magazine (Amateur Radio Today)
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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...
Topics: antenna, amateur, mhz, radio, ham, output, tor, magazine, power, frequency, amateur radio, power...
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73 Magazine September 1982 (#264) Micro Modem - a RTTY TU designed for computers ...... WA4CKQ 10 F1 for the Hot Water 101 -all the way with FSK! ...... K0JH 20 No-Frills RTTY - $2OO and you're on the air ...... WA4STO 24 Incredibly Simple RTTY - receive it on your TRS-40 ...... WQXI 28 The RTTY/Tri-bander Marriage - enjoy the 100% duty cycle ...... K0ARC 32 Confessions of a Counter Evolutionary - part II ...... WAZFPT 38 Double Trouble 0n 50 MHz - Home-Brew Contest runner-up ...... KL7CLK 58...
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73 Magazine (Amateur Radio Today)
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73 Magazine October 1969 (#109) A Super-Gain Antenna for 40 Meters - Nine db on 40 meters might be called "super" ...... W4NVK 8 DX Corner - WTW reports and other DX jazz ...... K2AGZ 12 FET Chirper - Signal source for peaking converters for optimum signal/noise ...... K6QKL 20 The Inside Info on Alexander Graham - Or how the telephone really works ...... W2FEZ 24 Leaky Lines - Similar to "Grumbles," but by a licensed amateur, not a CB'er ...... K2AGZ 28 Scope Calibrator -...
Topics: signal, frequency, modulation, amateur, arrl, radio, antenna, modulating, power, receiver, amateur...
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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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Topics: amateur, radio, mhz, kit, antenna, power, meter, frequency, circuit, repeater, circuit board,...
73 Magazine (Amateur Radio Today)
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73 Magazine June 1992 (#381) 8,000 Channels for the Ramsey FX-146 - Add direct frequency input to this popular 2 meter transceiver ...... KG7BK 10 VE3CYC's Wire Beam - Versatile gain antenna for a limited space ...... VE3CYC 16 Touch-Tone Squelch - Remote speaker control with a DTMF decoder ...... VE3RGW 20 Build Your Own 20 Meter Transceiver - Work the world with this easy-to-build rig ...... WB6NKJ 26 The j-Com Ventriloquist - Throw your voice with the push of a button ...... WB8ELK 40 The...
Topics: radio, amateur, antenna, mhz, frequency, repeater, dtmf, ham, amateur radio, radio today, ham...
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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,...
73 Magazine (Amateur Radio Today)
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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)
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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...
73 Magazine (Amateur Radio Today)
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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...
73 Magazine (Amateur Radio Today)
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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 .........
Topics: antenna, amateur, mhz, radio, frequency, power, magazine, meter, swr, amateur radio, driven...
73 Magazine (Amateur Radio Today)
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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...
Topics: mhz, frequency, power, radio, amateur, antenna, output, kit, meter, circuit, amateur radio, power...
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73 Magazine December 2002 (#505) Commercial-Quality Function Generator - Will you outlive it -or vice versa? ...... K8IHO 10 Shedding Some Light on Dimmers - Why not put one of these triacs to use? ...... W2GOM/7 22 Eager for Meager - Try an 11m vertical on 160 ...... AD1B 24 Shack Switch for Foot Fetishists - Not that it's That kinky ...... WA2OKZ 27 Ashore at Sacrifice Rock! - The saga of a masterful DXpedition ...... VU2SBJ 28 Hamfest Success Formula - How to make sure your 'fest is a...
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Topics: radio, frequency, amateur, antenna, mhz, ihe, thai, cap, december, amateur radio, radio today, web...
73 Magazine (Amateur Radio Today)
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73 Magazine April 2003 (#509) Right Fancy CPO - A keyer from My Kid Brother ...... K8MKB 10 Ham's Handy Heat Hunter - Let this temperature probe take your shack's temperatures ...... KC5MFY 20 Ozzie's Jupi-Loop - Use an aircore balun with your Ten-Tee Jupiter ...... W5RK 23 Ishmod Update -Trams ...... 24 Travels with Henryk -Part 11 - Adoring the Azores..... SM0JHF 27 The Interrelationship of the Coriolis Force, the Helix Effect, and So-called Einstein Antennas - As usual, 73 takes you right to...
Topics: amateur, radio, battery, mhz, antenna, april, ham, frequency, smbus, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
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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 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...
73 Magazine (Amateur Radio Today)
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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...
73 Magazine (Amateur Radio Today)
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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...
Topics: radio, amateur, mhz, paddle, ihe, antenna, frequency, ham, digital, amateur radio, radio today,...
73 Magazine (Amateur Radio Today)
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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)
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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,...
73 Magazine (Amateur Radio Today)
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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...
Topics: rtty, frequency, amateur, mhz, power, kit, antenna, baudot, output, circuit, power supply, amateur...
73 Magazine (Amateur Radio Today)
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73 Magazine August 1982 (#263) Poor Man's Spectrum Analyzer - another 73 breakthrough ...... WB5IPM 10 The AC4YN Story - a Tibetan adventure, circa 1936-1937 ...... G5YN 32 "Smart" Squelch for SSB ...... W9MKV, W9YAN 44 The Ultimate Fuse - ac overload protection ...... W2OLU 52 Multi-Purpose Peak Adapter - don't settle for being average ...... K9EUI 54 The $100 TVRO Receiver - Satellite Central, part VIII ...... Gibson 60 VUM: Volume Units Meter - makes measuring decibels easy .........
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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...
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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,...
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73 Magazine September 2003 (#514) (Final Issue) Just Hang'er Up - Clear out your closets with this fun WARC tri-band dipole ...... W4DAN 10 Portable Pulse Generator - Build this pocket-size test instrument that's useful in a wide variety of lab and service tasks ...... Sellen 13 Be a Caribbean HEARO - How about a little mini-DX from the USVI?... W9CGl 18 73 Repaired My TV - Thanks, guys! ...... W6MIK 22 The Ins and Outs of Parts Substitution - Part 2: Specific devices ...... W6WTU 26 Simple...
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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 -...
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73 Magazine June 1988 (#333) Flip-Flop/Latch Circuit - Welcome to digital electronics ...... W4RNL 11 New York City School Program - Carole Perry's kids learning with radio ...... WB2MGP 14 Digital X-Y Oscilloscope - Handy tuning scope project ...... WA9TYU 20 Care and Feeding of PBBS - Etiquette and protocol for packeteers ...... WA1FHB 22 UoSATs Part II - Fascination and fun with these British birds ...... N5AHD 29 Buyer Beware - Sensible advice for buying second-hand gear ...... WD8RCL 32 A...
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73 Magazine May 2003 (#510) Tunable Broadcast Band Filter - Another great project from K8ZOA ...... K8ZOA 10 How to Avoid a Disaster Disaster - And how about putting the field back in Field Day? ...... WB9YBM 22 Ready, Set... Don't Go? - The time for preparation to be a meaningful participant in the next emergency situation is before the event occurs ...... AA2JZ 23 'Quaker Oaths - In 1989, the ARS came through... is it still ready? ...... WA6ITF 24 Ham vs. Power Outage - Here's a solution that...
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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...
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73 Magazine November 2000 (#480) Build This IP3 Test Set - A receiver's third order input intercept point is more than just a mouthful ...... N2DCH 10 Inside Digital TV/VCR Tuners - Part 3: Data receiver for testing ...... W6WTU 16 A BFO for Your SW Rx - With a $10 Ten-Tec kit ...... W4PGI 22 Super-Simple 80m Fox - Build this easy and inexpensive QRP rig, perfect for dual-band foxboxes ...... K0OV 24 You Can Build the FoxFinder 80! - Here's how to get started in the exciting world of 3.5 MHz...
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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 .........
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73 Magazine January 2003 (#506) Build This Amazing ESR Meter - A simple project for everybody's shack ...... K8ZOA 10 K.I.S.S. Trickle Charger - And the ABCs of battery maintenance ...... K9TRG 19 Experimenting with Hall-Effect Sensors - For fun and knowledge ...... W6WTU 25 On the Face of It, A Good Idea - How to ace those finishing touches on your home-brewed pride-and-joys ...... AA2JZ 29 Travels with Henryk -Part 9 - The Dominican Republic, where the main mode is merengue ...... SM0JHF 35...
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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...
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73 Magazine July 1987 (#322) The National Championships - Finally, there's a contest where the "Little Gun" has a chance, where guile wins out over gigawatts ...... KE7C 30 The Two-Meter Transverter Project - Build this VMOS transverter and use all of your Kenwood TS-940's bells and whistles -on two meters! ...... W6YUY 32 Big Time Packet - With the help of a mainframe computer, KITE can control a packet station from his desk -or from around the world ...... K1TE 44 New Life on Two -...
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73 Magazine June 2003 (#511) QRP Antenna Showdown - What's the best antenna to use with your QRP rig? ...... K7UGQ 10 Field Day 2002: Out on Our Own - Can you spell duct tape? ...... WA9PYH 14 Now Hear This! - Home-brew yourself a magnetic headphone ...... N4HCJ 18 Yes, I Built Sixteen Log Periodic Antennas! - Part 1: Theory and tests ...... W4AEO 20 Travels with Henryk -Part 13 - Borneo hams strut their stuff ...... SM0JHF 30 Reverse Breakdown Voltage Measurement Adapter - Build this simple...
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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)? .........
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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...
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73 Magazine September 1986 (#312) A Rotatable What? - How to spin 90 feet of crank-up tower on a lazy susan ...... WA2VUN 28 HF Antennas: All Bands, All Wire - Another round in the crusade against coax—these three 9-band doublets contain no artificial ingredients ...... W0VM 32 Watts My Line - Coax, parallel feeders, or microstrip, this Basic program lets you design your own custom transmission line ...... K4IPV 36 Scaling the Wet Noodle - Antennas in one-quarter time: Experiment with your...
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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,...
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73 Magazine October 1985 (#301) Silver Eagle Awards ...... Editors 18 Talk Is Cheap - Good news: Now you can afford a speech synthesizer! You have our word on it ...... WB6NQK 22 Takin' It to the Streets-Part II - Last month's discussion was only half of the story-now discover what remote control can do when the ShackMaster's power is unleashed! ...... WA6AXX 32 Above Intercept - It is cramped and dark and freezing cold, but the Allies need information. Has Britain's secret radio fallen into...
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73 Magazine July 1985 (#298) Faces of Dayton '85 ...... KW1O, WB8BTH 8 ICOM's Extended Play - Ten minutes with a Phillips screwdriver gives your IC-751 transmit capability from .1 to 30 MHz! ...... KS4B 12 America's Dream Array - Twenty-seven dishes in a twenty-one-mile pattern make for some serious DXing at the National Radio Astronomy Observatory. Galactic DXCC, anyone? ...... AJ0N 18 WARC for the FT-101E - Here's how to join the fun on our new 12-meter band. And you'll be ready for 18 MHz,...
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73 Magazine January 1982 (#256) Egad! A Nine-Tube Linear - results from the W7CSD test bed ...... W7CSD 12 Drama on Mt. McKinley - ice, snow, and amateur radio ...... W7KUF 18 The Simplex Autopatch - a telephone interface for everyone's two-meter rig! ...... WA7VZR 26 The Cheapskate - a checker for bargain diodes ...... K9QLL 30 Constant Current from a Voltage Regulator ...... WA4WDL 39 The Hesitator: A Windshield Wiper Control - a rainy day project ...... N4UH 40 TVRO Signal Source -...
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73 Magazine February 1987 (#317) Secrets of Silent Switching - It's time to say farewell to chattering, sticky relays ...... OA4KO/YV5 28 PC Infernos - Ah, the sweet smell of flaming phenolic! Before you throw out that burned PC board, consider doing a little micro surgery ...... WB4YOD 32 Shoestring Software - Forty-five baud on a budget: This amazingly simple software will boot your Commodore up on RTTY in under an hour ...... W9ODK 34 The Talking Teletype - K9EI's Basic RTTY-to-voice system...
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73 Magazine January 1992 (#376) The Dual-Combo Field-Strength and Source Dip Meter - Versatile test instruments for all your RF projects ...... WB0ESV 8 Safety Power Breaker for the Test Bench - Avoid a shocking experience ...... WA1FHB 18 An Improved Crystal Tester - Check out those surplus crystals with this portable circuit ...... KA4J 22 Build a Function Generator - An inexpensive way to generate useful waveforms ...... KB4ZGC 28 One Desert Storm MARS Experience - MARS readiness and support...
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73 Magazine July 1994 (#406) The Global Positioning System - An overview ...... WA4BLC 10 World 's Smallest 10 GHz ATV Transmitter - Build one on a PCB using only a few components ...... HB9SLV, HB9RKR 16 EMI/RFI Defense Strategies for Hams - Keep those troublemaking signals out of your mobile installation ...... N7MGT 24 A Delayed Video Trigger for Your Oscilloscope - Convert your surplus scope ...... KC3XM 38 Muttiband Half-Wave Delta Loop (MHDL) - A simple 20-10 meter antenna with an SO-39...
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73 Magazine November 1994 (#410) An Average and Peak Reading RF Power Meter - Add this handy monitor to your operating table ...... K4GOK 10 440-450 MHz Omnidirectional Antenna - Build this UHF base or repeater antenna for less than 10 bucks! ...... KA0NAN 22 Adapting Bell 202 Telephone Modems for Packet - Enjoy packet radio with this bargain basement project! ...... KI5PG 42 The Kenwood TS-60S - 50 MHz all-mode transceiver ...... WB2WIK/6 14 The Alinco DJ-G1T Handheld - An HT with a built-in...
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73 Magazine February 1997 (#437) Amateur Radio and Linux - Software home-brewing is here! ...... W9IF 10 Elegant Rotating Revisited - An enhanced Beam-aiming circuit ...... W1ZZB 17 Antenna Tuners - Do we really need them? ...... W6YBT 21 The Topbander - A cheap and easy antenna tuner for 160 meters ...... W8ND 23 Build The Turbo Digi-Sniffer - A simple-to-make digital field strength meter ...... AH2HR/5 26 Sumas Mountain High - Building a self-sufficient repeater tower on a British Colombian...
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73 Magazine July 1964 (#46) The 432'er: Outboard RF Stage ...... K1CLL 8 The 432'er: RF Amplifier ...... K1CLL 10 The 432'er: Tuned Trough Line Mixer ...... K1CLL 14 The 432'er: Local Oscillator Chain ...... K1CLL 16 The 432'er: First Evening of Listening on 432 ...... K1CLL 20 The BH-2 ...... K5JKX 22 2300 MHz Wavemeter ...... K7YJF 26 VHF Tunable Oscillators ...... K0CZD 36 Six Meter VFO ...... WA6CDO 42 VHF Yagis from TV Antennas ...... W6TKA 44 Semiconductor Schmaltz ..... Kidder 50 The...
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73 Magazine October 1972 (#145) Frequency Synthesizer for 2 Meter FM Part II - For any 2m rig ...... K2OAW 15 A Big New Voice in Chicago - September cover feature at last ...... W9NLT 25 Solid State 6 Meter Crystal - HET - VFO - Solid State - the Works ...... K1CLL 29 The FET Voltmeter As A Nano-Amperemeter - For checking FET's ...... ZL2AMJ 37 Time/Frequency Measuring System Part I - Station clock and frequency counter ...... K5OUS 39 Active Filter Design and Use : Part IV - Movie rights for...
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73 Magazine October 2000 (#479) With Fingers Crossed - The latest on Phase 3-D ...... G3RWL 10 Low-Cost P3D Antenna Setup - These three antennas are perfect for everybody ...... K5OE 17 Cruising for Satellites - If you can get away with it, this is the best of both worlds ...... W5ACM 22 From Russia, With Satellite - "The name is Brown, Jerry Brown" ...... 27 Inside Digital TV/VCR Tuners - Part 2: Data transmitter for testing ...... W6WTU 30 OSCAR-10 Antenna System - A look at the...
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73 Magazine May 1962 (#20) Two Meter Tank and Coupler - Part 1 on a marvelous two meter rig ...... W9DUT 6 Simple Antenna Mast - 22 feet for $4.00 ...... K3LTB/5 8 6M Double-Sideband AM Transmitter - Uses circuit board. Whole bunch of fellows are getting on with this simple rig ...... K8AOE, K8MSB 10 Two'er Modifications - AC/DC power supply, new osc. circuit. Applicable to 10'er & 6'er too ...... K2ORY 16 73 Tests the Telco 201 Converter - This six meter nuvistor converter is amazing...
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73 Magazine November 1973 (#158) Getting Started On 450 MHz - Hurry before someone proposes a Class F! ...... K1CLL 21 Getting Started On ATV - Simple circuits for the beginning ATVer ...... WA7NMO 26 NI-CAD Battery Life-Saver - Insures cold starts ...... K2ETN 35 The Heath GR-110 Scanning Receiver - A plus for Heath ...... W3WTO 39 Is Your Autopatch Legal? - Or are you just pretending ...... W3YVV 49 Frequency Aperture Modulation - FAM makes another appearance ...... W2BSP 53 VOM Range...
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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 April 1987 (#319) Dayton Digest - If you haven't been to the Dayton Hamvention, you haven't been to a hamfest ...... WA4BPI 32 QRP Antenna Farming - Work the world from a small lot with a few Watts ...... W0VM 36 The Cellular Phony Antenna - A two-meter mobile antenna with a twist ...... WA2AJQ 38 Weatherproofed Antennas - Stop ripping apart your antennas every year in the name of "maintenance" ...... KD5UJ 40 Tube Terror - "Before you can leave, you must find an...
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73 Magazine October 1995 (#421) The QRP Delight - A full-featured antenna tuner with built-in SWR meter ...... AD5X 10 DDS Dream VFO - Yes, you can build your own synthesizer! ...... KD1JV 14 Portable Solar Electric Power Generator - The sun is free for the using ...... K4SYU 20 Armstrong Updated - A high-performance, regenerative short-wave receiver ...... KC3ZQ 26 Link it All! - Why settle for operation on just two bands? ...... WB9YBM 32 Boring Beacons! - Making additional use of beacon...
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73 Magazine July 1963 (#34) Sizzling Six - Super sensitive six meter converter. Kit available ...... W9DUT 8 Chemical City TU - One of the best RTTY converters to come along so far ...... K8IQJ 14 Low-Ebb in the Sunspot Cycle - "Humph, that's science fiction" said Tom astoundingly ...... K2TKN 17 Two-Banding the Swan One Bander - Cinch ...... W8DZH 18 Six Meter Transmitter - 2E26 output. Kit available on terrific tuning-indicator ...... K6GKU 22 Two Meter Antenna Coupler and SWR...
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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...
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