73 Amateur Radio Today – July 1966
Issue Contents:
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 FETs
– It checks h11 h12 h21 and h22 …… K3LCV 30
A Field Effect Voltmeter
– Here’s a real transistorized VTVM: 22M input resistance …… K3LCV 34
An FET Audio Compressor
– Use FET’s for high input impedance …… K3VNR 38
The Kindly Keyer
– This IC keyer uses a commercial PC board …… WB6AIG 46
Save That Transistor!
– Defective transistors as Zeners and varactors? Sure! …… K9VXL 50
Lambda Lines
– Scraps of twinlead a make good Lecher lines …… W2DXH 54
Designing Transistor RF Amplifiers
– Good info for the serious experimenter …… Thorpe 58
A 75 Watt Two’er Linear
– It uses Bill’s favorite Compactron …… K1CLL 66
A Better Sideswiper for Electronic Keyers
– Your cat will like this one …… W6BLZ 70
Replace Your 811s with 572Bs
– The right way …… WB2EPG 72
UB5UG’s Five-band Vertical
– It’s pretty clever and simple too …… W8FAZ 74
Don Miller DXploring
– The life of leisure on a lush tropical island …… W9WNV 76
Gus: Part 13
– Gus keeps rolling along …… W4BPD 78
73 Amateur Radio Today – July 1966
