73 Amateur Radio Today – December 1967
Issue Contents:
250 kHz to 29.75 MHz Stabilized Converter
– A phase-locked receiver with 500 kHz bands …… K5LLI 6
Some Experiments With Stacked Beams
– Getting more gain out of your array …… VE1TG 14
Simple Antenna Mount for Satellite Work
– An el-ez antenna mount using two rotators …… W4HJZ 20
Strong Signal Interference
– AGC modifications for improved cross-mod performance …… K6KA 22
Charging Dry Batteries
– An approach to longer-lived primary cells …… WA6NIL 26
A Forty-meter Vertical Array
– Lots of gain for 7 MHz DX’ing …… K8DOC 30
Hamateur Acoustics
– One man’s sound is another man’s noise …… W3RZD 34
A Workbench Clutter Filter
– Get rid of that mess on your work bench …… WA6UVS 38
General Information About Amateur RTTY
– What it’s all about …… WA0OBJ 42
Computer Card Construction
– Use those surplus printed-circuit computer cards …… K1EUJ 48
Station Accessory Control Unit
– Put all your station controls in one neat box …… K6ZHO 52
A True Parasitic Monitor
– A no-power CW monitor …… K4FQU 56
The Mini-sWR Bridge
– Perfect for tuning up antennas …… W2EEY 60
Yes Old Timers There is a Santa Clause
– I’d mark that true on a true-false test …… W0HJL 62
The Contest Caper
– How to win contests…… K8KFP 66
Jean Shepherd WB4DOH
-the piano protege …… Roberts 79
Bmmmfff!
– The information explosion …… G3KPO 83
The Waters Band-adder Antenna
– 20 15 and 10 with a 75 meter mobile antenna …… W0HJL 84
Hallett Signal Saver
– Top-notch shielded ignition system …… WB6KFI 86
Gus: Part 30
– Return to South Africa …… W4BPD 91
73 Amateur Radio Today – December 1967
