73 Amateur Radio Today – November 1984
Issue Contents:
Color Computer SSTV: Part I
– Turn your CoCo into a complete SSTV terminal How? First build this high resolution display system …… K6AEP WB8DQT 10
Wrap Up TVI!
– Can you endure another evening without transmitting? Use this simple cure to choke out television interference forever …… KR7L 26
But I Know How To Solder!
– Anyone can dribble hot metal over a joint bit it takes an artist to really solder. Are you a Picasso or a pig? …… WD4S 28
Free-form Filter Design
– Build the ultimate audio filter: high-pass low-pass bandpass notch variable Q and cutoff frequency all in a single circuit. Circuit? Sorry that’s a single chip! …… KA4QVK 34
Your Own Optoelectronic Anemometer
– Light contral and car-top calibration make this project cheap to build easy to align and extraordinarily accurate …… K3VDB 42
Rampant RTTY
– Create the ultimate mallbox! K0WVN describes a system that operates from 45 to 1200 baud with dual shifts-automatically …… K0WVN 50
Decode Soviet Space Messages
– As you read this mysterious signals are being beamed into your shack. What do they mean? Where are they coming from? Use WD0BCI’s satellite-telemetry reading program to uncover facts …… WD0BCI 53
The End of the Line
– What’s the point of sending power up the coax if it never reaches the antenna? These tips on connector installation and care will help maximize your station’s signal …… WB5LBI 56
A Useful Present You Can Build
– How about a high-tech holiday gift? …… WB4YOD/pW8ZAF 58
Ham Over Fist
– Here’s a VIC-20 CW program with a twist: Its real-time display lets you watch your dits and ‘dahs dance across the screen. But be forewarned-you may not like what you see! …… WD8BHH 64
Homemade Defroster Shutoff
– This simple gadget has nothing to do with amateur radio but its a neat little project anyway …… KB2WM 68
73 Amateur Radio Today – November 1984
