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73 Magazine


 
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73 Magazine (May 1964)

Description: 73 Magazine May 1964 (#44) Flying Noise Lock ...... K2TKN 6 Matching VHF Antennas ...... K5JKX 12 Where Have Our Bands Gone? ...... W2DUD 16 The Quad-Quad - for two ...... W8HHS 20 Class D Amplifier - introducing a new type of audio circuit for transistors ...... K5JKX 26 12 Volts from 6 ...... K6BIJ 32 Single Tube Oscillator-Multiplier ...... K5JKX 34 SSB, DSB, AM, etc. ...... K6HJH 36 Inboard Calibrator for the NCX-3 ...... WB2MAH 42 Push-to-Talk for the ...

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73 Magazine (June 1964)

Description: 73 Magazine June 1964 (#45) T-51/ARQ-8: 6 Meter AM and SSB Transmitter ...... W5AJG 6 Nickel Cadmium Storage Batterys ...... W4VGS 14 ARB Aircraft Receiver...... W1MEG 16 ARR-1: Adding SSB ...... W6BHR 18 TV-10/A: 220 MHz Transverter ...... W5AJG 20 ARR-15 ...... W1MEG 24 R44/ARR-5 Receiver ...... Ives 26 Surplus Find ...... Gardiner 30 Propagation ...... Nelson 31 Really High Gain ...... K5JKX 33 Smaltz for Semiconductors ...... Kidder 34 Surplus Circuit B...

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73 Magazine (July 1964)

Description: 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 Semicond...

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73 Magazine (August 1964)

Description: 73 Magazine August 1964 (#47) Two-Band Transistor Transmitter ...... QZ7BQ 6 Two Meter Transistor Receiver ...... K6TOV 14 Stripping Transistor Radios ...... K8YCH 20 UHF Beacon ...... W6GGV 22 Squelch for Transistor Receivers ...... Geisler 28 Those Fragile Transistors ...... K4CPR 29 Transistor AM-FM VFO ... WA0HQA 30 Transistor Final for Forty ......W0TKX 34 Minute kW Power Supply .... K8IKA 40 The Signal Helper ...... W3WJN 44 Transistorized Receiver .....

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73 Magazine (September 1964)

Description: 73 Magazine September 1964 (#48) Linears for the Two'er ...... K1CLL 6 Linear for the Sixer ...... K1CLL 11 Portable Six Meter Station ...... W1OOP 16 Now That You Ask Me ...... W7IDF 29 More on the 6DQ5 ...... K5JKX 32 SJS Receiver ...... K5JKX 34 Another Antenna of Note ...... W2RWJ 40 Tuned Line Tank Circuits ...... WA4EPY 42 Six the Easy Way ......WA9CZQ 50 Simple Squelch ...... K5JKX 53 Souping the TCS ...... K7CJJ 54 Varicap Phase Modulator ...... W7C...

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73 Magazine (October 1964)

Description: 73 Magazine October 1964 (#49) A Ham In the White House? ...... K3SUK 6 Compact Full Size 20 Meter Beam ..... W3PMV 10 160 Meter Transmitter ...... W4MLE 13 432 MHz Pre-Amp ...... K6MIO 18 The SJS Receiver, Part 2 ..... K5JKX 26 The P&H 2-150 ...... K6LOP 30 The 432'er Transmitter RF Section ...... K1CLL 32 The 432'er Modulator ...... KlCLL 44 The HP-23 Powers the Swan 100 ...... K6LOP 47 Modulated Calibration Oscillator ...... Ives 48 Ten'er to Six ...... ...

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73 Magazine (November 1964)

Description: 73 Magazine November 1964 (#50) VHF Log Periodic Beam ...... VE3AHU 6 SSB VFO ...... K9ALD 10 Color the Grommet Gone ...... K7IDF 12 Cartoon ...... Rogers 14 Tuneable Antenna for 432 ...... K1CLL 16 On the Air on 432 ...... K1CLL 18 Precision Audio Attenuator ...... K9QYI 22 6 Meter VFO Transmitter ...... WA2GCF 24 Sterba Curtain for Two ...... W2ZBS 30 Electrolytic Saver ...... W0HMK 31 KWM-2 Voltage Regulator ...... WA4NXC 33 80-40 Vertical ...... WB2CQM ...

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73 Magazine (December 1964)

Description: 73 Magazine December 1964 (#51) SSB Mobile Receiver - Lots of nice ideas in this one ...... W3ZFJ 6 Cheap Pair of Socks - Simple linear using inexpensive new tube ...... W6NKZ 10 28 Volt Supply - 10 amps at 28 volts for $10 ...... K6VNT 12 Weather Detector - Don't let a tornado suck you up ...... K5JKX 14 14 Elements on 432 - Simple yagi for 70 cm ...... K1CLL 16 Miniature Multiband Tuner - Very clever and useful ...... W6SFM 18 Bamboo Birdcage - Thanks to ...

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73 Magazine (January 1965)

Description: 73 Magazine January 1965 (#52) 120 Watts Mobile on Two - With a well-modulated 5894 ...... K5JKX 6 AM, the Ham and Transistors - It's not too easy to get linear modulation with transistors ...... Geisler 12 Diode Controlled Break-In - A very clever scheme for easy clean switching ...... VE2AUB/W5 16 Calibration and How to Get It - By one of the greatest hams ...... K6BJ 22 Tuned Feeders Forever - Nasty black snake ...... W5DWT 24 Pegboard Panacea - Clean up...

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73 Magazine (February 1965)

Description: 73 Magazine February 1965 (#53) The Ham and TVI - With clever cartoons by K3SUK ...... WA6OQP 6 Coffee Can VXO for Oscar III - Be ready for QSO's to Europe on two ...... W7SMC6, W6HEK 10 Transistor, Hi, Hi - A few interesting notes on Nipponese transistors ...... K6QKL/ KH6 11 Multiband Vertical Antenna - A simple high-frequency antenna for hams with space problems ...... W3UWV 12 Let's Go Ham TV - The details of getting on the air ...... K3DSM 18 Solid-Sta...

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73 Magazine (March 1965)

Description: 73 Magazine March 1965 (#54) Dual VHF Converter - Combination 144/220 MHz Nuvistor converter ...... W9DUT 8 Two-Band Collinear Antenna - For 40 and 15 meters, by George ...... W7CSD 10 The Parametric-Transistor Multiplier - A new development in electronics of great interest, no doubt ...... W6GXN, W6QUD 12 Improving the Garden City TU - Don't let the title fool you; it's a complete TU, whatever that is ...... W7CJB 16 The Ham - Don't miss this one. It hurts...

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73 Magazine (April 1965)

Description: 73 Magazine April 1965 (#55) Europe on Two? - Get ready for Oscar III ...... W7SMC/6 3 Letter from Gus - Beginning 73's monthly letter from the DX King ...... W4BPD/AC5H 4 1 kW PEP - 811's in a small box ...... W9EWL/0 6 6 Meter Heterodyne VFO Transmitter - A simple, stable, easy-to-build transmitter from Bill ...... K1CLL 10 Kostless Keyer - Well, maybe not kostless, but klose to it ...... W8MQW 14 Double Hula - A small new antenna. Looks like a halo, but ...

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73 Magazine (May 1965)

Description: 73 Magazine May 1965 (#56) 432 MHz Converter - Easy-to-build converter to get you on 70 cm ...... K6MIO 6 A New Approach to Phasing - Not all SSB transmitters use filters, you know ...... W8HXA 12 The Big Bomb - Runs a gentleman's gallon ...... W0SYK 18 Two for Two - Some antennas for our western hams ...... W6TKA 22 The Trouble with Fred - A fetching tale illustrated by K3SUK ...... Margolis 26 A Versatile Oscilloscope - Every ham needs a scope. This one d...

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73 Magazine (June 1965)

Description: 73 Magazine June 1965 (#57) A VFO With FSK Provisions - A stable VFO for the SSB-RTTY man ...... W6TKA 18 Shoulder Strap Portable - An easy-to-build 6 meter rig for portable operation ...... K1CLL 22 Superimposing 6 Meters on Your Tri-Bander - The ideal match for a transmitting converter ...... W4API 25 The Waters Cadax - A very fine all-purpose electronic key ...... WA2TDH 26 73 Tests the Henry 2K Linear - An Imperial Gallon ...... W2NSD/1 28 Gus, Part 2 -...

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73 Magazine (July 1965)

Description: 73 Magazine July 1965 (#58) A Two Meter Transistor Transceiver - To give you a little encouragement to go portable on VHF ...... I1SLO 6 A Simple Two Meter Collinear - Build your own CushCraft collinear ...... W5GVE 14 220 Converter Number 9 - The last tube converter Hank built, but a good one ...... W1OOP 18 Reviewing the CushCraft Squalo - It works ...... WA2ZCH 20 Push-Pull 5763s on 144 - You might call it a forest of 5763s ...... WA6VTL 24 2C39 Amplifie...

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73 Magazine (August 1965)

Description: 73 Magazine August 1965 (#59) This One Sounds Good - Like a Transmitter Should - A fancy name for an article about a 20 watt six meter AM transmitter ...... W2BHT 6 Going RTTY: Part 3 - The scope monitor ...... W4RWM 12 Imagineering With Meters - Put those miscellaneous meters to good use ...... W8BPY 14 The EHS Portable Dipole - Works from 80 to 6 ...... W9FQN 16 Some Notes on Grounded-Grid Linear Amplifiers - And some interesting ideas in a 8072 linear .....

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73 Magazine (September 1965)

Description: 73 Magazine September 1965 (#60) Der Kleiner Keyer ...... WB2KPE 6 QRM on 432! ...... W2NSD/KP4 14 Practical Meteor Scatter ...... K1CER 20 A Simple DX Antenna ...... W6WAW 24 The Ultimate in Transmitter Control ...... WB2CCM 28 DSB Circuits ...... W6TKA 34 The Zorch-Proof Connector ...... W4WKM 36 An One Filament Transformer Bridge ...... W5NGX 38 The Cheap SWR Bridge ...... WIJJL 42 Simplified Tuning for the Drake 2B ...... W7ZC 44 W2NSD in Hungary .........

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73 Magazine (October 1965)

Description: 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 Co...

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73 Magazine (November 1965)

Description: 73 Magazine November 1965 (#62) We Got Across! - Catching up with the past: No.3 ...... W2AAA 6 An Audio-TV Transmitter - Broadcast sound and video on the same carrier ...... W8VCO 14 Hybrid Phone Patch - Of course, we don't really approve of phone patches ...... KH6IJ 18 A Coax Antenna for Twenty - Or fifteen or ten ...... W2NQS 20 Six Solid Watts an 160 - We keep telling you that tubes are obsolete ...... K9IAH 22 Half-Rack Panels - Sure beats those orang...

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73 Magazine (December 1965)

Description: 73 Magazine December 1965 (#63) Solid-State 432 Exciter - Puts out 8 watts on 432 MHz. A ham scoop ...... W9SEK 6 8058 Nuvistor Preamp for 432 MHz - Complete plans and layouts ...... I1L0V 10 UHF-VHF Dipper - 50 to 500 MHz with no work ...... WA1CCH 11 Transistorized FSM - Printed circuit board available for this one ...... W1JJL 14 Ham Christmas Gifts - Ho, ho, ho! It's that time again ...... 16 RF Measurements - Build a Q-meter and impedance bridge .........

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