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73 Magazine (500 Books)


 
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73 Magazine (October 1960)

Description: 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 ...

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73 Magazine (November 1960)

Description: 73 Magazine November 1960 (#2) Transistorized 10 Meter Converter - Not only that, but it uses a printed circuit you can make ...... W3BUL 9 Four Band Crystal Converter - 20-15-10-6 meters using the new International Crystal converters ...... W3UZN 12 FM VFO Exciter - Butchered BC-459 for 6 and 2 meter FM or NFM operation ...... W1TUW 14 Mobile Power - How to put some beef into that mobile signal ...... K5JKX/6 16 Cardboard Chassis - Building on the kitchen ...

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73 Magazine (December 1960)

Description: 73 Magazine December 1960 (#3) Transistorized 220 MHz Converter - Crystal controlled too ...... W3HIX 8 RF Sniffer - Snooper sensitive RF detector which you will build ...... K5JKX/6 11 SSB Dynamic Demonstrator - Teaching SSB calls for some tricky stratagems ...... W2UQB 12 Capacity Meter - Two ranges : 0-40 pF (resolves 1 pF) and 0-900 pF ...... K8ERV 14 Station Control System - Even if you don't build this one it will give you ideas ...... W1TUW 16 The Mu...

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73 Magazine (January 1961)

Description: 73 Magazine January 1961 (#4) Nuvistor Converters for Six and Two - 417A performance without 417A cost ...... K8ERV 8 Down With Drift - Step-by-step stabilization of your receiver ...... K5JKX/6 12 6N2 Completed - Eico, Heath, and Johnson kits add up to 100 watts on Six and Two ...... W3UZN 14 1296 MHz - Secret confessions of an UHF addict ...... K2TKN 16 Goblin Patrol - Hams team up with cops to louse up Halloween for the kids ...... W8UCY 18 Lost in a Tun...

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73 Magazine (February 1961)

Description: 73 Magazine February 1961 (#5) Rolling Your Own - We're determined that you're going to build something ...... K5JKX/6 11 Amplifier for Varicap Modulator - More for gain for the modulator in our October issue ...... W7CSD 16 World's Simplest Phone Patch - Average construction time: five minutes ...... K5JKX/6 17 Two Meter Pip-Squeak - Complete phone rig using only three 6CX8's ...... K6BP 18 Squawk - Guaranteed Houser. We should needle Ken into writing more...

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73 Magazine (March 1961)

Description: 73 Magazine March 1961 (#6) Translating Technical Journals - You'll read this one to anyone who will listen ...... K5JKX/6 9 Transistorized Grid Dip Oscillator - Severing the AC umbilical cord with a transistor ...... W3KET 10 Curing Ignition Interference - Step-by-step assassination of the noisy car gremlins ...... W8UCG 13 Superregenrative Receivers - Ten rules for getting good results from a super-regen illustrated ...... W5WGF 14 Decreasing Debugging Ti...

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73 Magazine (April 1961)

Description: 73 Magazine April 1961 (#7) Six Meter Nuvistor Converter - Two 6CW4's in cascade give a fearfully low noise figure ...... K8BYN 9 Power Meter - Another valuable piece of test gear for the ham shack ...... K8ERV 12 Surge Protection in Reverse - Protect your silicon diode power supply from destruction by shorting ...... Pafenberg 13 Let's Modulate, Not Crepitate - Getting good modulation out of a Heising Modulator ...... K4ZGM 14 A New Noise Limiter - Get out...

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73 Magazine (May 1961)

Description: 73 Magazine May 1961 (#8) G4 Zed Smith - A tri-bander without loading coils or traps, can be tuned from the shack! ...... W8VVD 9 Feedline Economy - Open-wire line just may become popular again after you read this one ...... W9HOV 18 Propagation Special Feature - Taking a look at sunspot numbers with an eye to predictions ...... K2IGY 20 Testing the KT-200 Receiver - Next month we have some of Bill Orr's ideas for modifying this receiver ...... K2DHA 22 Ham...

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73 Magazine (June 1961)

Description: 73 Magazine June 1961 (#9) Abe Lincoln - Two meter antenna for mobile or fixed. Looks awful, works great! ...... K2TKN 8 75M Transistorized Converter - Nice little one evening construction project ...... WA6DZL 12 Precision Capacity Measuring - Right down to a fraction of a pF ...... K6BJ 14 Propagation, Part 2 - When the sunspot null will really come and what it will be like ...... K2IGY 16 73 Tests the M-100 Modulator - Just how good is that gate modulato...

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73 Magazine (July 1961)

Description: 73 Magazine July 1961 (#10) A Tinker-Toy for Two - Two meter antennas made out of aluminum tubing and a Tinker-Toy set ...... K8LFI 8 Ready-Made Emergency Antenna - New, improved type mobile antenna. Really works out! ...... W7CSD 12 Two Meter Line Amplifier - Nuvistor pre-amplifier -for hottening up your two meter converter ...... Bullock 14 Amplitude Modulation Systems - Review of AM systems with special reference to an oldie you'll like ...... W7CSD 18 G...

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73 Magazine (August 1961)

Description: 73 Magazine August 1961 (#11) Frequency Deviation Meter - Another little garget to build from the brain of one of the top hams of all time ...... K6BJ 6 Noise Limiter - For the car. Transistorized, printed circuited, and the board is available ...... W3BUL 8 SSB vs. AM - Year-by-year count of band occupancy by SSB and AM. (SSB is winning) ...... K0AXY 12 Square Antenna - The Bi-Square is easy to build and works out beautifully ...... W8GUE/6 14 The Drake Re...

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73 Magazine (September 1961)

Description: 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...

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73 Magazine (October 1961)

Description: 73 Magazine October 1961 (#13) Six Meter Linear Amplifier - 90 watts AM, 360 watts PEP SSB, 2-1/2 watts drive to pair 7378s ...... W2LPC 6 Simple High Stability, VFO - 5763 osc., 5763 buffer. Colpitts circuit ...... W2RWJ 14 73 Tests the Central 200V - It works ...... Staff 18 CQ de 73 - Converting the ARA-26 surplus keyer for ham work. Inexpensive, and lots of fun ...... W2WKM 22 Like New Mixer Circuit - New way to improve sensitivity and stability of your...

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73 Magazine (November 1961)

Description: 73 Magazine November 1961 (#14) Linear for Sunspot Lows - Do-it-yourself F2 layer. A kilowatt six meter linear for SSB ...... K6QQN & W6QMN 6 Transistor Mike Pre-Amplifier - Outboard pre-amp to make up for audio deficiencies of your rig ...... K6PZT 10 Transistorized RTTY Audio Oscillator - Printed circuit, generates mark and space tones for RTTY ...... W5SFT 12 Have You Met These Characters - TVI brings out some remarkable characters ...... K3HNP 15 TV Tun...

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73 Magazine (January 1962)

Description: 73 Magazine January 1962 (#16) Kilowatt Sideband Transceiver - Single band rig, but amazingly compact ...... W6JAT 8 Rotate That Tower - Instead of just the antenna ...... K2LZF 14 73 Tests the Alco GDO - It works fine ...... W4WKM 18 Rotors - Why TV rotors usually fail as beam twirlers ...... K2TKN 20 Speakers for Command Sets - Making use of midget speakers for built-in sound on the ARC-5 receivers ...... W4WKM 24 Chase That Dampness - Cure the number one...

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73 Magazine (February 1962)

Description: 73 Magazine February 1962 (#17) V-Loop Beam - Angie claims this thing works out. Looks easy to build, give it a try ...... W2NQS 8 Final Tanks - It's about time someone did a through job on this subject. Technical article ...... W6JAT 12 Converting 6 Volt Radios to 12 Volts - Basic conversion for car radios, Motorola, and link transceivers, etc ...... W4OHM 20 RX for the RTTY Bug - Nice TT converter, complete with scope ...... W0RQF 26 A Page from a Designe...

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73 Magazine (March 1962)

Description: 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 app...

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73 Magazine (April 1962)

Description: 73 Magazine April 1962 (#19) Six Meter SSB Exciter/Transmitter - Since sideband is going to be the big thing on 6, you'd better start soldering ...... W5JSN/K8NIC 6 Field Strength Meter for Ten and Six - Using a midget loaded whip to improve the sensitivity of your F.S.M ...... W3YZC 9 Forty Meter ZL Special - As the sunspots go, so go the higher bands. Try this 40M amplifier ...... W4AXE 10 73 Tests the Poly-Comm 62B - Pollytronics has really done it: Six ...

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73 Magazine (May 1962)

Description: 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 n...

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73 Magazine (June 1962)

Description: 73 Magazine June 1962 (#21) Echo Deluxe - Two meter transmitter with a commercial appearance ...... W9DUT 6 The Friendly Frequency - 52.525 MHz ...... W9YCB 14 Six and Two Meter Nuvistor Pre-Amplifiers - Pre-amplifiers are easier to build than converters ...... K9ARA 16 Milliwatt RF Power Measurements - For those low power transistor rigs and transceivers ...... K4UWX 18 Noise Limiter for the NC-300 - Rate-of-change type limiter ...... W8IQN 20 Six Meter Tr...

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