73 Amateur Radio Today – October 1983
Issue Contents:
Six Antennas from Three Wires
– With these modified Beverage antennas you double your directions without doubling your cost …… K1VR N1RC 10
Join the Packet-radio Revolution -part II
– Warm up your soldering irons. This part offers the nuts and bolts of building your own TNC …… WA7CXD 20
Become a Low-band Pioneer
– Where does an audio transistor become a gccd rf amp? On 1700 meters of course …… KL7GLK 34
The Phantom Antenna of Possum Hollow
– The boys needed a good antenna fast-before winter set in. Thurman’s mysterious story was the solution …… W8VFT 40
Your Enemy Feedline Loss
– Let your swr meter stop this demon before it creeps up on you …… K3CSV 42
PVC Meets VHF
– Flush high cost down the drain and build these cheap antennas. The gain is free …… WA2NUB 44
A 10-mHz Antenna for $10
– If you’re still on 30 meters the Hanging Helix may be your last chance …… K9AZG 46
Slaughter’s Sway-bar Forest
– Are trees an antenna hindrance? Or are they the means to the best antenna collection you ever had? It just depends on your outlook …… K9AZC 50
The Phase-shift Oscillator Goes Hollywood!
– This circuit can be the star of your audio designs. All it needs is a tweak here and a taper there …… Goodson 54
Build the Harmonic Zapper
– When the TV starts sounding like Donald Duck you need this 20-meter trap …… W2YW 56
The Anti-gravity Antenna-erection System
– Now you can put your wire antennas as high as you want-maybe …… W0YBF 58
Your Own Beam-bruiser
– Muscle your beam around from anywhere with this local control box it’s perfect for serious tower work …… WB4FXD/1 62
Put Together the Shawnee Logic Probe
– It’s better than a tomahawk when you’re on the warpath against glitches …… Roth 66
Take the Drudgery Out of Contesting
– Let your Radio Shack computer dupe the log while you relax …… WB0NFX W0CZ 84
World’s Fair Super Squelch
– With this two digit DTMF decoder-a perfect club project-you hear only calls meant specifically for you …… WA4TEM 86
Defuse RFI
– A clean signal starts with a good earth ground. Make yours better with some coax and capacitors …… W0WUZ 88
73 Amateur Radio Today – October 1983
