73 Amateur Radio Today – December 1979
Issue Contents:
New Product: Swan’s Astro 150 SSB Transceiver
…… WB8BTH 32
Low-cost Receiver for Satellite TV
– this modular design uses readily available technology …… N6TX 38
A Simple 2m/10m Crossband Repeater System
– work the world with an HT! …… K9EID 44
Audio Booster for Mil-surplus Receivers
– a must for headphone haters …… McClellan 50
Working with FETs
– part II : experiments with gain and supply voltage …… WA2SUT/nNN0ZVB 54
Build this $50 Mini-counter
– three-iC design goes to 135 MHz …… McClellan 58
A Versatile variable Active Filter
– dc switching and 8-pole response make this one a winner on RTTY or CW …… WA8HEB 66
Variable Tuning for WEFAX Receivers
– why be rockbound? …… N6TX 70
Ham Radio Marriage Manual
– a YL and her understanding spouse …… WB5YVE 76
The Space-saving Square Vee Antenna
– a directional radiator for cramped quarters …… W7DJB/6 80
License Upgrading -a Plan of Attack
– you need not fail! …… WB2RVA 84
Muffin Fan Mania!
– a compendium of knowledge about electromechanical air movers …… WA6NCX/1 88
Are Repeaters Ripping Us Off?
– some thoughts about open access to scarce frequencies …… KB2JN 92
My TR5-80 Is Here… Now What?
– first steps in programming your computer …… W3KBM 96
Teaching Your Micro to Count
– two methods for adding counter capability to your 6502 machine …… K6EW 104
Operation Santa!
– spread holiday cheer with this super club project …… WD8LPN 118
Tools and Techniques for Wire-wrapping
– an excerpt from 73’s new book …… W6SWZ 126
Working with Transistors
– useful knowledge begins where gobbledygook ends …… WA2SUT/nNN0ZVB 132
A Digital Clock with Analog Readout
– this is progress? …… W9IEA 138
Turn Off Repeater Windbags
– HT mod brings welcome relief …… WD5HYQ 144
Build a $5 Coax Switch
– why pay more? …… W8HXR 146
Hamdom’s Evangelical Crusade
– born-again ops arise! …… WB8TCC 148
The Memorizer Flies Inverted
– something Yaesu never told you …… W1WUO 150
Double-duty Decoder Project
– listen to SCA and tune in RTTY …… WA1UFE/5 152
Build a Simple HT Charger
– doubles as a 12-v supply …… W6SMJ 158
Do-it-Yourself Carrying Case for Wilson HTs
– save $14.88 …… K2GMZ 160
Come On In- The Viewing Is Fine
– an update on trends and developments in SSTV …… K4TWJ 168
Rack ‘Em Up
– glass jars and orange crates are “where it’s at” for parts storage …… VE2BVW 172
Gadzooks! A variable 0-260 V Ac Supply!
– junk-box delight …… WB8JCQ/lU1AKO 174
Scrounger’s Special: Used Dental Tools
– your DDS throwaways make dandy PCB drills …… WA7OYX 176
First Look at Latest Radio Laws
– the official work …… KB5AO 188
The Induction Relay: Self-powered Switching
– this unusual actuator doesn’t require a separate control voltage …… K6DZY 192
The Further Adventures of Keycoder
– simplified wiring for the toroidal cores …… AD9K 196
All About Ground Rods
– getting connected to Mother Earth …… Staff 200
73 Amateur Radio Today – December 1979
