73 Amateur Radio Today – July 1973
Issue Contents:
Tuneable Oscillators for 2m FM Receivers
– ICs are a lot cheaper than crystals …… K1CLL 21
Basic ATV System
– A T-44 transmitter strip does most of the work …… WB0FQF 29
High Performance Small Yagis
– Mount a supercharger on that 2 element beam …… WA3CXG 33
Multiple Output Frequency Standard
– Lets you calibrate your receiver in .0625 Hz increments …… W4HSA 37
Digital Identification Unit
– Be ready when you’re asked to produce your papers …… K1OZS 39
Topographic Repeater Maps
– Docket 18 8 03 forces us to run a free ad for the government …… USDI 50
DX Mobile Installation
– Add horsepower to an otherwise low octane signal …… K4TWJ 53
450 MHz Power Divider
– Easily constructed matching system for stacked arrays …… WA3AXV 57
The Role of the FCC
– Does it serve and protect or unnerve and reject? …… W2NSD/l 59
CW Filters Bared and Compared
– Complete with scope traces and bandwidth specs …… W6AGX 65
85 dB Gain 2m Antenna
– Don’t submit this one to the FCC …… K1TKJ 71
Compromise Multi-band Antennas
– Do you expect to work all bands without compromising? …… W2EEY 75
Spinoffs from NASA
– Our undercover agents are stopped by nothing …… WB2ICV 83
Grid-dip Tuning the Quad Antenna
– Something to do on a hot afternoon …… VE3GSP 87
Amateur Rules and Regulations Part II
– This month Jason and the Argonauts battle seasickness in the Aegean …… FCC 91
73 Amateur Radio Today – July 1973
