73 Amateur Radio Today – March 1975

73 Amateur Radio Today – March 1975 with Index

Issue Contents:

Can a 7 foot 40m Antenna Work?

– The small loop …… W0PJG 33

The Secret of Antenna Gain

– (Shhh -it’s capture area!) …… K2OAW 39

Twinlead Phased Array

– Two elements on 40m – or any other band …… WB2NQT 47

The Incredible Capacitive Antenna

– Now: an 18″ allband antenna …… W0KGI 49

An 80m Phased Array

– Switchable directivity …… W2OZH 52

A Coax Amplifier for 450 MHz

– 6 dB stacked collinear …… W5GDQ 58

Invisible Antennas

– Why ask for trouble? …… WA8BHR/5 61

Another Look at the Swan Beam Antenna

– Testing …again …… WB6PDN 66

City Dweller ‘s Multiband Antenna

– An inverted Windom? …… W4ATE 69

40m Inverted Vee Beam- Satisfying

…… WA7OET 72

The Unofficial Standard Standard

– Quack Rot Vice? ……W7IDF 74

The Mystery of Antenna Radiation

– Is it still a mystery? …… VE3DDS 81

The Double Inverted Vee

– A remarkable wire beam …… VK6IZ 91

A Short and Sweet 160m Antenna

– Build this simple portable topbander …… W2NYU/ WA1JJV 93

Pete’s Dipole

– A better method of feeding …… WA4NWM 95

The Magic of the Log Periodic

– Special Book Supplement …… W4AEO 97

Avoiding Traps with Antennas

– Three great multiband designs …… Staff 126

A New National Amateur Radio Society for Canada

– Introducing C.A.R.F. …… VE3VCA 129

Mobile SSTV Breakthrough

– 73 discovers the cassette recorder …… W2NSD/1 139

Yet Another Etching Technique

– Something fishy here …… Anderton 143

73 Amateur Radio Today – March 1975 with Index

Return to 73 Amateur Radio Today Index


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