73 Amateur Radio Today – August 1974
Issue Contents:
Directional Wattmeters and Novel SWR Meter
– Build every thing in this article and give your retflecto meter a rest …… G3PDM 17
FETS on 450 MHz
– Nobody can build an rf amplifier like Bill …… K1CLL 27
GDO To Find C
– A unique 1000pF reader …… G3OGR 35
Super Trimline for 2
– Maybe no one will notice if you borrow the extension in the bedroom for a while …… K4TWJ 37
R-390A Modifications for Improved Performance
– A great buy – if you can get it …… W6ONL 39
R-392 On The Air
– A great buy -if you can get it (sounds familiar) …… W7UGV 47
Super Selective CW Tracking Filter
– You’ll flip over this one …… W2FSO 49
An Audible Voltmeter
– Here’s one you’ll really enjoy …… WA0AQC/9 55
Midland 2m Base or Portable
– A review of interest …… WB4MYL 61
Cheap and Easy 230V AC Power Supply
– A must for everyone …… K5LLI 64
Universal Power Supply
– Five power supplies for the price of one …… Calvin 65
Review of Grounded Cathode Linears
– Learn all about the mysterious class X amplifier …… W7CSD 67
Slide Rule Rules
– After reading this 10 to .1 you’ll no longer have to guess about where to put that decimal point …… K8GOU 72
SSTV Scan Converter
– Sensational Article – Don’t Miss It! …… W0LMD 73
House Cleaning The Logical Way
– Perspicacity all the way – that’s what I always say …… W3HPX 85
ID Timer
– After you build it you’ll probably sit and watch it for hours …… WB4MYL 95
Fail Safe Switching Improved
– Get out your October 1971 73 – here’s an update …… Hunt 97
73 Amateur Radio Today – August 1974
