73 Amateur Radio Today – June 1973
Issue Contents:
Simple Generator for 222 MHz
– This three transistor oscillator and attenuator will enable you to tune up a 222 receiver or antenna and measure the sensitivity. There are still new worlds to explore -try 222 …… K1CLL 23
Miniature 80 and 40 Meter Antenna – Brand new idea for the experimenter
– don’t say there isn’t anything new that amateurs are working on. Get cracking …… W2EEV 29
UHF Output Meter
– Accurately measuring rf power at 444 MHz is a problem …… K2EE 37
FCC-approved Repeater Application Info
– Makes nice reading on a sunny afternoon …… FCC 46
Color Slow Scan Television
– A system for direct viewing of color slow scan. What next? …… K4TWJ 49
RTTY Autoswitch
– Great for two meter RTTY …… K2YAH 51
40 Meter Transmitter
– Hybrid rig for inexpensive fun on 40 CW. Good Novice rig ……WB6BIH 55
Polar Mount for Moonbounce
– Don’t all rush to make this up okay? …… W4KAE 59
The Urban Quad
– Tri-bander you can make good performer …… K3MNJ 63
Understanding Reflected Power
– Oddly enough very few engineers understand it. Read and confound the experts …… W5JJ 65
The K2OAW Counter Improved
– Improved accuracy timebase check burnout protection etc …… W9CGI 70
The Perfect Summer Job
– A 73 work-ethic special. Combine hamming with a vacation and get paid for it …… WA8MLG 75
Double Coaxial Angenna
– Get Increased bandwidth with this all coaxial folded dipole …… W2EEY 79
Non-falsing Tone Decoder
– A circuit that keeps illegal transients from tripping your COR …… W1ELU 83
Calibrated Signal Strength Meter
– Did you calibrate your antenna to the meter or vice versa? …… VE3CES 85
Portable FM Battery Pack
– An easy way to fake it if you can’t afford a hand unit …… K4YKB 87
An In-circuit Ohmmeter
– Tackle squeamish circuits with this low current device …… W6HDM 91
Amateur Rules and Regulations Part I
– Who will bet that they’ll change while we’re in midstream? …… FCC 95
73 Amateur Radio Today – June 1973
