eye Title Creator

73 Magazine June 1975 (#177) Me Friend ...... W7IDF 17 Homebrew this SSTV Monitor ...... WA9MFF 22 El Cheapo Superbeam ...... WA6NLQ 31 The Smart Alarm ...... WA6KBL 37 An Intimate Look at 160 Meters ...... W2NYU 43 RF Power at 432 ...... K1CLL 48 The Minirepeater ...... WB4DBB 55 Inside Ma Bell ...... Whipple 67 Dirt Cheap Tunable I-F for Converters ...... K0VQY 81 6m IC Rx ...... K1CLL 85 All Band Frequency Marker ...... W1KNI 88 Protect Your Gear with a Latching Relay ...... Ives 93 A Case...

Topics: receiver, mhz, antenna, khz, frequency, transmitter, audio, circuit, meter, repeater, power supply,...



73 Magazine September 1974 (#168) MOSKEY -Part 1 - Win contests with this programable keyer ...... W3HPX 19 A Severe Weather Warning Net? - Why not with this monitor? ...... W9DTW 27 A Agitable - Make better p.c. boards ...... WA0ABI 41 LXpedition - Peripatetic Edgar Bently's to Luxembourg ...... G3BID 43 Six Meter DXing - You can make WAS on 50 MHz ...... WA6CPP 49 Questions - 2m quad feed -SX101 -GS680 ...... W9EGQ 51 Heath 10-103 Mods - Ten more calibrated sweep speeds ...... McCarthy 55...

Topics: amateur, repeater, frequency, radio, circuit, voltage, antenna, station, output, signal, amateur...



73 Magazine July 1974 (#166) Modern 4-1000A Linear - At last -a use for that 4-1000A lying around in your junkbox ...... K8UIR 17 "Free" Batteries for TT Pad Power - 73 lands another great article ...... W3WTO The Scotch Transistor - Hoot Man, you don't have to throw it away after all ...... WA9UFG 31 Poor Man's Universal Frequence Generator - Only after you build it ...... W2EEY 33 Universal AFSK Generator - An article of cosmic importance ...... K6IQL/N0ZIP 37 Cheap 10-mmute Timer...

Topics: output, frequency, circuit, voltage, mhz, input, amplifier, amateur, power, transistor, power...



73 Magazine January 1974 (#160) Wide Range Audio Oscillator - Cheapskate special - uses one 50 cent IC ...... W2EEY 25 Another ID Generator Circuit - Mobile, fixed; for FM, SSB and RTTY ...... W9DTW 29 Expanded Range Line Monitor - 110 -120V ac full scale metering ...... WA0ABI 34 Oscillators on 432 and 1296 MHz - Inexpensive UHF experimenting ...... K1CLL 35 Simple Active Filter - For CW, SSB, RTTY, etc ...... W6AGX 41 Video Tape Recorders - Better'n movies ...... WB8HEE 43 Inexpensive Decimal...

Topics: mhz, output, antenna, frequency, amateur, meter, voltage, watts, power, oscillator, power supply,...



73 Magazine August 1967 (#83) Push-Pull Class-B Grounded-Grid Linear - An unusual, if not new, approach to high power ...... VE3AAZ 6 A Frequency Calibrator for the VHF Man - Finding yourself on 144 and 432 MHz ...... W6GXN 12 The Semi-RTTY System - Solid-state AFSK oscillator and terminal unit ...... K0JXO 20 Mobile Power - The Alternator - Their use and abuse ...... W9NLT 24 Visual Monitoring of Remote Carriers - What does your CW signal look like? ...... W3RMI 30 Power Losses and High SWR -...

Topics: tlie, circuit, frequency, oscillator, antenna, voltage, output, power, mhz, transistor, power...



73 Magazine April 1971 (#127) What's Really Different About FM? - A lot, a whole lot! ...... K6MVH 12 Aftermath: A Noise Blanker That Works - The author returns to the drawing board ...... W8RHR 18 FM Intermodulation on 2m - Chart for locating interference sources ...... W6YAN 20 Hotroddinq Motorola's Hybrid HTs - A commercial bid for the 450 market ...... W7PUG 28 Stability Without Crystals - Introducing the Sentry Modcom, whatever that is ...... Staff 30 Switching Remote Linears - or local...

Topics: mhz, amateur, frequency, receiver, output, meter, repeater, transmitter, khz, radio, amateur radio,...



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 December 1990 (#363) Behold the BackPacket! - Go take a hike with packet radio ...... NW6H 9 Upgrade Your HD-4040 - KISS your Heath HD-4040 and keep AX.25 too! ...... N2BLI 19 The VOX Plus HT Accessory - Enjoy base station performance -with your HT! ...... WA2EBY 24 Pack Your Seabag, "Sparks" - Do you want to be a ship's Radio Officer? ...... N0MM 35 Audio Powered Tape Recorder Controller - Add convenience to your hamshack ......KE0UV 54 Ten-Tee's Hercules II Model 420 -...

Topics: radio, amateur, antenna, ham, audio, mhz, frequency, ihe, power, amateur radio, radio today, ham...



73 Magazine March 1962 (#18) Printed Circuit VFO - Extreme stability and simplicity of construction in this 50 MHz VFO may bug you to build ...... W5UB 6 Regulated Bias Supply - Great for linears, develops -20 to -120V @ 0-70 mA and presents only 6 ohms to grid ...... W5IUR 12 Check Transistors with an Ohmmeter - Here is the simplest test for transistors yet, and it's safe and works ...... W9QKC 14 Radar Detector - All you 2,500 MHz SWL's (UNFL's?) will appreciate this mobile receiver .........

Topics: antenna, frequency, meter, circuit, output, power, modulation, signal, receiver, pulse, power...



73 Magazine November 1962 (#26) Solid State 1296 MHz Converter - Transistors on 1296? Good grief, what next? Sensitive too! ...... W3HIX 6 Deluxe Your Transceiver - The Lafayette HE-35A, for example. S-meter, spotting switch, etc ...... K6UGT 10 Junction Cheks - Quick way of making sure the junctions are still good onyour transistors ...... K2OPI 16 The Continental Six - Six meters SSB with this low-cost high performance transmitting converter ...... W1PYM 18 Build Your Own Mobile Mike -...

Topics: circuit, meter, voltage, tlie, frequency, tuning, diode, receiver, signal, antenna, power supply,...



73 Magazine September 1961 (#12) Silicon Rectifiers - How not to pop 'em, a lesson for hams and engineers alike ...... W1OOP 6 Tuning Bypass Condensers - How to make a bypass bypass at the VHF's ...... K5JKX/6 8 Simplescope - Perchance the title may give this one away. You need one. Build it ...... W0OPA 10 VFO Chirp vs. 6AU6 - Several VFO's use a 6AU6. Lousy choice, try a 6AH6 instead and see ...... K3KMO 20 Console - If you're going to be obstinate enough not to buy an Alden Hambench, then...

Topics: circuit, frequency, crystal, transmitter, power, receiver, ham, antenna, oscillator, voltage, power...



73 Magazine December 1966 (#75) Transistor Power Supplies - Useful information on low-voltage DC supplies ...... W6GXN 10 The Sideband Escalator - Have you tried SSB speech clipping? ...... W6TAQ 16 A Ham Electronic Counter - Determine your frequency the modern way ...... K7UDL 20 The Novice Pair - Build a practical, modern novice station ...... W1JJL 28 A Lab-Type Power Supply - Regulated low-voltage output; PC construction ...... W6GXN 38 QRZed the YL - The frustrations of an YL's husband...

Topics: tlie, antenna, power, circuit, voltage, output, meter, frequency, ssb, ham, power supply, amateur...



73 Magazine August 1963 (#35) Dry Cell Rigs - QRP mountaintop special for six meters ...... K1CLL 8 Diode Noise Generator - 73 kit. Zener diode voltage regulated job ...... K9ONT 15 Video Modulation - For the ham-TV contingent ...... W8VCO 16 Magic T-R - Best Tee-R yet for VHF with no loss of sensitivity ...... K5JKX 20 Saturn 6 - Soup up your halo with this tuning method ...... K5LPE 22 Utopia Break-In - Hear through your own sending and keep track of the frequency ...... W4MLE 24 Practical...

Topics: antenna, receiver, meter, transmitter, vertical, amateur, xmtr, vhf, vee, ham, vertical antenna,...



73 Magazine February 1963 (#29) 6M SSB - Pros, cons, and the gear to do it with ...... W2NSD 10 432 MHz Gallon - Legal now ...... K2TKN 14 Mountain Topping for Blood - An old pro doesn't answer ones ...... K1CLL 20 Simplified 8JK Beams - The twin-three really puts out a signal. Really ...... W6WAW 24 Double Sideband - DSB has some decided advantages, you might as well read this and face it ...... W3PHL 28 Crystal Oscillator - How to get the stability required for moonbounce on 1296. It ain't...

Topics: power, output, sideband, watts, meter, receiver, antenna, ssb, transmitter, audio, power supply,...



73 Magazine March 1966 (#66) Circular Polarization - Use CP for moonbounce, trop, and OSCAR ...... K6MIO 6 Solid-Stale Sixty - A 60 watt regulated power supply for and with semiconductors ...... K3LCU 12 Crystal Oscillators - Tube, transistor and FET. his is a good one ...... W6GXN 14 Slaying the Monster - Or: Why fear TV? ...... W0EDO 18 Diary of a DXpedition: VP2VD - So you think it's just a matter of sitting by the pool and operating? ...... K4IIF 20 Unmodifying the S-38 - Have you ever met...

Topics: antenna, amateur, circuit, diode, frequency, power, filter, voltage, varactor, meter, amateur...



73 Magazine July 1966 (#70) MARS HF Mixer and Amplifiers - Also good for putting your tri-band rig on 15 or 10 ...... WA4KIH 6 Two-Element Weeping Willow for 15 - Perfect for novice DX'ers ...... WA8MVR 12 Frequency Measurements for Hams - Receives VLF, too ...... W6BLZ 14 VHF Parametric Transistor Multiplier - Experimenters must read this one. A scoop, of course ...... W6GXN 20 How to Get Your Extra Class License - Here's the easiest way to do it ...... W5TOM 26 A Transistor Analyzer Using...

Topics: tlie, voltage, coaxial, transistor, cable, power, output, frequency, antenna, mhz, coaxial cable,...



73 Magazine May 1966 (#68) New VHF Circuits for Transistors - 6 meter converter and filter from Frank Jones ...... W6AJF 6 RF Applications of N-Channel FETs - Very important article; a 73 scoop, of course ...... WA5KLY 12 Size is Impressive - A little humor to brighten the day ...... K3VMZ 14 FSK Principles - How to transmit RTTY on HF ...... W4EHU 16 VHF-UHF Panoramic Reception - Now you can watch that empty band ...... W5NPD 20 UHF Grid Dipper - Excellent dipper, even if it does use tubes...

Topics: voltage, circuit, amateur, avc, antenna, frequency, output, signal, oscillator, input, amateur...



73 Magazine October 1965 (#61) 2 kW Mobile - PEP, of course ...... W2DMK 6 Meterama - Get some good use from those old air-speed indicators ...... W5GWF 12 Six for Six - Six elements for six meters ...... WB2CQM 18 A State-of-the-Art Converter - Integrated circuitry comes to hamdom ...... W3HIX 22 Hamfest Out on a Limb - A little step toward international hamming ...... Margolis 26 Are 20 Cent Transistors Coming? - Apparently so ...... W7SMC 30 The Lowly Coax Fitting - A little picture article...

Topics: meter, tlie, output, voltage, power, frequency, transmitter, watts, volt, watt, power supply, full...



73 Magazine December 1968 (#99) Using the First Ham Integrated Circuit - Includes several useful circuits ...... W6DNS 6 Mouse Tunnels - Hiding the wiring ...... K6HKB 12 Circular Modulation Monitor - A new scope ...... WA9IGU 14 The Mini-Square - Square wave in miniature ...... WB6BIH 16 Add-On FM Test Set - Simple to complex in easy stages ...... K9STH 18 The Elusive H Parameter - Not so elusive now ...... WB6BIH 20 Zero Temperature Coefficient VFO - Sure stability ...... W6WQC 24 75 Meter...

Topics: power, voltage, signal, circuit, antenna, output, input, audio, frequency, radio, power supply,...



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 May 1970 (#116) 73 Comments on FCC's Proposed Repeater Rules - Passage as proposed could be catastrophic ...... Staff 20 What Will Become of CW? - What became of the passenger pigeon? ...... W5TOM 30 FM-AM Transmitter-Receiver Aligner - Two transistors, any band HF or VHF, simple, useful ...... W3JKL 34 5/8 Wavelength Verticals - Twice as good as a Quarter-wave ...... WA0NGV 36 The Intelligent Use of Two Meters FM - It is possible ......K1ZJH 40 Plus 10 dB - The October '68 article...

Topics: amateur, repeater, antenna, circuit, mhz, frequency, radio, power, transmitter, output, amateur...



73 Magazine September 1968 (#96) Going VHF - In the Mobile ...... W9HDF 6 Communicator Reborn ...... W6HCX 14 432 MHz Amplifiers ...... W6AJF 16 Quick Converters ...... W9NLT 20 So You Think You're on Frequency ...... K6MVH 27 Parallel T-Network Design ...... Kyle 30 Starting Off on VHF ...... WA1GEK 32 Learning - The Radio Code if You're Over 30 ...... W1EZT 34 A Review of the Heathkit SB-110A ...... Matthew 60 1296 Megacycles - 1968 ...... K2TKN 42 The VK3ATN Moonbounce Rhombic ...... W2NSD/l...

Topics: mhz, frequency, vhf, crystal, meter, antenna, amateur, output, circuit, power, amateur radio, power...



73 Magazine September 1969 (#108) A DX Curtain for 15 Meters - An easy 3-4 db gain for you ...... VE1TG 4 Tunnel Diodes-Theory and Practical Application - Including a one transistor solar powered transmitter ...... K8TSQ 8 The Magic T - Method for running rf transistors in parallel ...... Thorpe 14 Uncle Will and News from the Poudre Valley - In dialect yet ...... K0DVI 19 Basic Soldering Outfit - Good Lord! Another article on soldering! ...... W1EZT 20 Light Naturally Runs Down - A special...

Topics: voltage, circuit, signal, frequency, output, transistor, amateur, antenna, power, diode, power...



73 Magazine July 1971 (#130) An IC Audio Processor - Two IC Project ...... W2EEY 16 Audio Signal Generator - Wein bridge reinvented ...... W3SGV 20 Questions, Questions, Questions - Answers, answers, answers ...... W9EGQ 24 A Filter Box for CW Ops - Mind boggling CW selectivity ...... K8TSQ 26 Duals - Think piece for this month. Think! ...... WB2PAP 34 Miniature Add-On Oscillator for 2M FM - Little P.C. unit ...... WB6BIH 40 Collinear Gain Antenna for VHF/UHF Repeaters - Verticle beam antennas?...

Topics: frequency, receiver, amateur, antenna, signal, repeater, radio, voltage, ssb, circuit, amateur...



73 Magazine January 1973 (#148) Obscene Commission Petition - That hints of sedition and of coition ...... W2NSD 29 Minds Will Boggle When You Add - This Handy-Talky Touchtone Pad ......WlODI 31 A Widespaced Beam - Is the DXer's dream ...... VE3CFK 33 To Visit Yaesu, You Should Plan - When next you travel to Japan ...... WB6IZF/YB8AAP 37 Chances Are That You're Boun'ter - Love this IC KC counter ...... KL7GGB/4 39 Speech Processing Gives More Power - To transmit nonsense by the hour .........

Topics: mhz, meter, amateur, output, khz, receiver, frequency, repeater, circuit, input, amateur radio,...



73 Magazine November 1971 (#134) A Big Three Element Beam - Three elements on 75m - ZOWIE! ...... W4AXE 13 Remote Tune Your Groundplane - This is a real screwed up antenna ...... W2AOO 17 How to Build an Economast for Under $50 - Towerless is powerless in working DX ...... WB2FBF 21 A Gain Vertical Antenna for 2 Meter FM - 10 dB = 10 X power, transmit and receive! ...... K9STH 25 Photographing Radio Equipment - Maybe we can have better pictures in 73? ...... W2EEY 29 Biasing the Transistor...

Topics: mhz, amateur, capacitor, repeater, input, circuit, antenna, transistor, frequency, radio, amateur...



73 Magazine August 1978 (#215) Radio Row Revisited - it's alive and well in Tokyo ...... W8JJO 26 How To Work Europe With An HT - hint: requires trans-Atlantic plane fare ...... WB9PYM 28 What? CB Repeaters?! - perfectly legal, too ...... WA4EOX 34 A Complete X-Band Transmitter - easv to build ......W1SNN 38 Shock!!! - what to do when Thor's hammer falls ...... McAlister 44 The PVC Portable - a "go anywhere" 2m ground plane ...... WA6RJK 48 The Amazing Mobile life Preserver - simple,...

Topics: frequency, antenna, amateur, mhz, power, meter, radio, output, receiver, circuit, amateur radio,...



73 Magazine January 1978 (#208) The Go-first-Class Digital Tester - build this outstanding in-circuit logic monitor ...... W7BBX/4 24 The Unbeatable Base-Loaded Three-Element Rotary Vertical ...... W3KBM 22 Negative Numbers On A $9 Calculator ...... WB6IXT/7 32 Sideband Exposed! -the mysteries of SSB unveiled -why not understand it once and for all? ...... W2FEZ 34 IC Timer Review ...... W3HB 40 Forget Ohm's Law ...... Stanfield 46 Brew Up A Signal Generator ...... Staff 50 Reprogram Your...

Topics: output, frequency, mhz, power, kit, circuit, amateur, radio, receiver, input, power supply, amateur...



73 Magazine March 1978 (#210) The New, Improved "Best Keyer Yet" - updating MINI-MOS ...... K4JEM 22 The Powerful Grounded Antenna - thrives on poor soil ...... W0SII 26 How To Cut Costs On Power Supplies ...... W9HDA 28 You, Too, Can Go Digital ...... K2RB 32 Old Receivers - A Hidden Gold Mine - updating those '405 receivers ...... W6GXN 36 Old Rigs Can Live Again! ...... K41PV 40 Novices, Paddle Your Way To Happiness - super deluxe Novice keyer ...... W0OGX 44 How Many pF is That...

Topics: power, antenna, mhz, frequency, kit, circuit, output, voltage, meter, receiver, power supply,...



73 Magazine November 1977 (#206) Build The Omni-OSCAR! - practical omnidirectional antenna ...... K2OVS 24 Get Set For OSCAR 8 - details on the new bird! ...... W3HUC 28 Build An OSCAR 2m Transverter - make QRP days a success! ...... W2GN 32 Predicting OSCAR Propagation - not always simple ...... G3IOR 34 Try OSCAR Mobile - the ultimate DX test! ...... W2GN 40 Tic Tac Touchtone - a new mentod! ...... W9CGI 44 Visual OSCAR Finder - nice side effects! ...... WB2BWJ 50 Cheap Ears For OSCAR - an...

Topics: mhz, oscar, antenna, frequency, kit, power, satellite, meter, amateur, model, power supply, amateur...



73 Magazine September 1976 (#191) Balloon to Balloon! - another 73 first ...... W2NSD/1 20 The Surprising DORA Low Noise Antenna - part II ...... Boyer 34 Ultrasimple Regulation with New IC - power supply design greatly simplified ...... WB0JLS 48 Can An Indoor Antenna Work? - making the best of a bad bargain ...... Staff 56 12 Inexpensive Volts for Your Base Station - parts right out of your local Radio Shack ...... WA8WVF 60 A Test Lab Bonanza - using a transistor radio ...... WA7SCB 64...

Topics: antenna, mhz, kit, amateur, frequency, radio, power, voltage, input, ham, amateur radio, barrel...



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 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 June 1977 (#201) Two Meter Scanner - for the IC-230 ...... K3JML 46 Try the Mini-Timer - prevents HT timeouts ...... WA2UMY 48 High Frequency Utility Converter - handy test rig for any shack ...... K4DHC 50 RTTY Scratchpad Memory - after this, try a UART ...... VE3GSP 54 Build This CW Filter - darned good ...... VE3EXA 55 The London Bus Tuner - effective for short antennas ...... Staff 56 The W1BB Story - a visit with the king of 160 ...... WB1ASL 58 Ten Watts on 2 - it's possible...

Topics: amateur, radio, mhz, kit, frequency, power, antenna, fcc, circuit, meter, amateur radio, power...



73 Magazine August 1980 (#239) The Soft Mount -mobile mounts enter the space age ...... W2QFC 32 Notes from Big Sky Country - the further adventures of Dr. Hess ...... W6CK 36 Meet the Little Giant - everyman's sheet-metal tool ...... K4JHN 46 On Ten FM - home of the free, land of the brave ...... WB2EQG 52 The Rains of Morvi - duty in disaster for Indian hams ...... VU2ST 60 Those Fabulous Fifties - an era in retrospect ...... W1FK 64 Trash All Your Worries - Baron Von Rhonstead and the RFI...

Topics: radio, mhz, amateur, magazine, frequency, antenna, ham, rtty, kit, amateur radio, power supply,...



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 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 November 1983 (#278) Construct the Callsign Power Supply - KAIQZ put together aesthetics and electronics to produce a power supply that gives you more than good regulation ...... KA1QZ 10 The Magical Audio Filter - A variable frequency notch filter plus a peaking circuit will do wonders for your reception. And this project will almost build itself ...... W6QIF 14 Keyboard Your Way to Happiness - If happiness is perfect Morse, then this project is pure heaven. Special construction...

Topics: amateur, mhz, radio, antenna, tor, frequency, ihe, output, circuit, morse, amateur radio, power...



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 November 1986 (#314) A Power Supply Primer: Part I - First part of the last word on those big heavy things ...... K4IPV 26 Born-Again Bargain Boards - Put surplus (cheap!) printed-circuit boards to work in your shack ...... Thompson 30 Defuse RFI - The answer to the question, "What's a coaxial ground?" ...... W0WUZ 32 Commodore's RTTY Riot - Super-simple way to put your C-64 on RTTY ...... W8CHK, WB8YOB 34 Transistors On The Bias - The straight scoop on how to build a...

Topics: amateur, radio, mhz, antenna, power, ham, frequency, voltage, vhf, amateur radio, check reader,...



73 Magazine December 1984 (#291) A Times Square Data Display - Build this scrolling touchtone decoder for your favorite repeater. What you see is what you hear ...... WA4TEM 8 Color Computer SSTV: Part II - Complete the picture by adding weather-satellite facsimile to your new color SSTV system ...... K6AEP, WB8DQT 18 Transistors: A Biased Approach - In Part I, KC0EW takes the mystery out of solid state with clear talk and practical examples ...... KC0EW 34 Yikes! Spikes! - You paid good money...

Topics: amateur, display, antenna, mhz, contest, radio, output, rtty, tor, amateur radio, power supply,...



73 Magazine August 1984 (#287) Top-Notch Tuner Time - Can't get your signal out of the backyard? Build KC2NT's antenna matcher and hear what you've been missing ...... K2NT 8 Cheap Power Ploy - This rugged supply will give you more power than you ever dreamed possible. Have we gone too far this time? ...... K9QLL 10 Penn's Two-Tone Gadget - Clue one: We're talking about lab quality. Clue two: Get your junk box ...... W1BG 21 Yaesu, Icom Graft Revealed - Splice Icom's headset to Yaesu's talkie...

Topics: amateur, output, radio, ihe, mhz, frequency, antenna, tor, ttie, amateur radio, power supply, radio...



73 Magazine March 1985 (#294) TVRO Trivia - To those would-be satellite enthusiasts wondering which way is "up," W6SMJ offers the comfort of his years of experience in home satellite TV reception ...... W6SMJ 14 All This and PCII! - Would you like a fully-programmable Morse keyboard that will balance your checkbook and play Sousa marches? Then read on! ...... W4FXI 26 Do Volunteer Examiners Work? -A 73 Special Report - National VEC W5YI says yes. He should know ...... W5YI 28 The...

Topics: radio, amateur, amateurs, mhz, antenna, repeater, fcc, ham, tor, radio amateurs, amateur radio, utc...



73 Magazine June 1985 (#297) Tune In the TU-1000 - Has your RTW budget hit bottom? Then dust off that soldering iron-K9EUI's no-nonsense terminal unit gives store-bought performance at a build-it-yourself price...... K9EUI 14 Secrets of Telehamming - When the bands are dead, try trading your transmitter for a telephone. Operators are standing by ...... K9EI 24 CoCo's Counter - Use this dirt-cheap method to tune up your AFSK generator ...... KG4Q 26 Is Ham Radio Baking Us? - What damage occurs...

Topics: radio, amateur, amateurs, mhz, rtty, program, antenna, arrl, frequency, radio amateurs, amateur...



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...

Topics: antenna, amateur, radio, mhz, novice, antennas, repeater, frequency, ham, amateur radio, flea...



73 Magazine July 1988 (#334) Code Test Sure Shot - Pass 5wpm without learning code! ...... KA0NTK(SK) 10 Sequential Two-Tone Encoder - Easy encoder project ...... WB7CPT 14 Novice Band Nets - Check in and upgrade, too ...... W6DDB 18 How To Improve Code Speed - Learn from others' hard work ...... W9NGP 21 Direction Finding Loop - T-hunt antenna in a can ...... WA4UZM 22 Morse Code Motivation - Pointers for teachers from a teacher ...... KZ1Z 24 Hornblower Two - Unlimited control flexibility...

Topics: radio, amateur, mhz, code, antenna, net, ham, frequency, amateur radio, morse code, ham radio,...



73 Magazine April 1988 (#331) Welcome, Newcomers! - Hams were meant to serve in the public interest ...... KA1HY 4 Ham Radio at Its Best - The IARN: A shining example of service ...... KA1PZV 11 San Salvador Earthquake - Volunteers, please step forward! ...... W9ELR 12 The BEARS Project - An innovative middle school radio program ...... KZ1Z 14 Universal Power Supply Module - Your power problems arc solved with this project ...... K1BQT 20 Emergency Packet - Definitive portable packet for...

Topics: radio, amateur, antenna, mhz, frequency, ham, band, amateur radio, power supply, feedback card, ham...



73 Magazine September 1988 (#336) Antenna Systems - Sometimes "good" is bad and "bad" is good ...... W3ZC 10 Aluminum Cloud - A top performer for cliff dwellers ...... NF0R 14 Balloon Supported Antennas - How to really get out on 80 and 160 meters ...... W1GV 18 MARS and Amateur Radio - The military affiliated radio system ...... W1ZM, NNN0WAJ 23 Auto VIM: Part Two - Smart power supply for every bench ...... W4RNL 27 Pee Wee Thirty Transceiver - A compact 30 meter CW/AM QRP...

Topics: antenna, amateur, radio, mhz, power, swr, antennas, frequency, amateur radio, feedback card, power...



73 Magazine November 1989 (#350) Sing for the unsung Heroes - Let's recognize our clubs selfless volunteers! ...... K5CVD 36 1989 Holiday Wish List - Some of the best values for holiday gifts ...... 73 Staff 60 FLAVORIG! - Have a Radio Shack Flavoradio? Turn it into a 80-meter CW transceiver! ...... KBlUM 12 The Bitchaser - Build this versatile piece of test equipment for digital circuitry ...... K4OND 18 Bargain Audio Frequency Meter - $10 and an easy evening of home-brew gets you this very...

Topics: radio, amateur, mhz, antenna, frequency, ham, amateur radio, feedback card, ham radio, power...

