73 Amateur Radio Today – March 1989
Issue Contents:
Mnemonic Morse
– Use one digital system to learn another …… W8LHL 52
Grid Square Location Aid
– Invaluable antenna aiming program for microwavers …… WB6IGP 55
Control Head for the TS-440S
– Go HF mobile -with the 440S in the trunk! …… WB0UVN 18
Switching for Older RF Amps
– Safely key any linear amp with a newer HF rig …… WA4BLC 19
Link Controller for the S-cOM 5K
– Turn this popular controller into a repeater networker …… KF7FW 24
Breadboard a VCXO
– CB-to-10 mods are back! …… N8BSG 43
Feed-point Protection
– Keep your bumper-mount feed-point free of dirt and weather …… K3OF 47
ISOTRON 80
– Indoor antenna for 80m …… VE1GA 20
KB6MT’s Video Technician Course
– Join the fastest-growing license-class group …… Reneau 31
The MFJ-931RF Tamer-ground
– Apartment-dweller’s way to better stray RF control …… N1BLH 34
Maggiore HPC-201 Repeater Controller
– Full-featured and priced right …… K1ZJH 37
The Heath HK-21 TNC
– Good things now come in smaller and smaller packages …… N7KHU 38
Yaesu FT-790RII All-mode Transceiver
– This rig offers versatile 70cm operation …… KT2B 49
73 Amateur Radio Today – March 1989
