73 Amateur Radio Today – December 1973
Issue Contents:
IC Code Speed Display
– Check the FCC’s code machine with this one …… VE1BU 25
2 Meter Linear Amplifier
– In case you want to try Moonbounce …… W4KAE 29
A Simple IC Keyer
– Nice 3 IC Keyer …… K2BLA 37
Precision Waveform Generator
– Sine square and sawtooth waves from one IC …… VE3GSP 41
Helical Resonators
– Rise from the depths of QRM …… W0PSF/2 49
Sensitive RF Voltmeter
– Check out your rig’s emotional problems …… WA6NIL 53
The Greenie
– The first half of a possible Christmas article …… K1YSD 63
Rapid Receiver Control
– Using touch switches …… W2EEY 67
Increase SSB Efficiency
– With this simple mic preamp …… WA6QJU 71
Identifying Unmarked ICs
– Cash in on surplus bargains …… WA6IGU 73
The QSL From BY Land
– QSL QRT…… KA6IX 79
Sequential 2-tone Decoder
– For the bust repeater that needs more than single tone access …… W3JJU 81
A Satisfying Minimum Regulator
– A throw together regulator for quick projects …… KL7EVO 87
Take-apart 2 Meter Beam
– Folds down like an aluminum Christmas tree …… W1BHD 89
Making The Most of Auto ID
– Autocall anyone? …… K6HKB/1 91
Choosing and Using an Electronic Calculator
– Some outlets carry 10-15 models! …… K2OAW 97
Optimum Design of CW Filters
– Electronic and physiological factors …… W6AGX 107
Amateur Rules and Regulations VII
– This months a crowd gathers to witness the sailing of the Spanish Armada …… FCC 117
73 Amateur Radio Today – December 1973
