73 Amateur Radio Today November – 1971 Issue

73 Amateur Radio Today November – 1971 Issue

Return to 73 Amateur Radio Today Index


Issue Contents:

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 Audio Amplifier

– Who among us is without bias? …… W5JJ 37

The Split Site Repeater

– Greatly improves repeater coverage …… K6MVH 39

The Art of T-hunting

– Have you been missing this fun? …… WB6IQS 45

An Ultra-simple Selective Audio Filter

– Ideal for the CW op moonbounce etc …… W8RHR 49

Transistor/diode File Box Tester

– Better lay in a supply of file boxes …… WB4ITN 51

Crystal Tester

– Two transistor go/no go tester …… K6VCI 55

A Compact Kilowatt for Six Meters

– Think of the TVI records you can set with this! …… K1ZJH 57

The 3-4-6 Quad

– “The first stateside signal of the day …… K2MNJ 63

Let’s Revise the Morse Code

– Isn’t it really about time? …… W7OXD 79

A Pie-Net for Transistor Finals

– Specifications for all bands 160 – 6m …… W5PAG 85

Changing the 75S3 into a Better CW Performer

– Using a $58 Collins mechanical filter …… OA4KF 93

Why Coax?

– Twin lead is cheaper and has less loss …… G3BID 95

Communications Yardsticks

– dB dBm dBmc and other erotica …… Lenkurt 101

Metalphoto Your Nameplate

– This will really fake out the vjsitors …… W6BLZ 107

Amateur Radio and the Disabled

– Great hobby for the shut-in …… WA2CGA 109

Solid State Microwaves for Amateurs

– Crystal control on 2300 MHz …… K1CLL 113

Those Funny Looking Cards

– A Washington lobby? Who needs it! …… WA1GFJ 123

73 Amateur Radio Today November – 1971 Issue

Return to 73 Amateur Radio Today Index


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