73 Amateur Radio Today – January 1985
Issue Contents:
Eight Mods for the IC-730
– Customize your ICOM! Snip here. solder there and enjoy perfection …… N6HI 10
VIC RAMification: Part I
– Here’s how to turn 3 ICs and half an hour into 24K of extra VIC-20 memory …… Brefini 18
VIC RAMification: Part II
– W6LOB fills the 3K gap of Part I with a quick piggyback RAM expansion …… W6LOB 22
Transistors: A Biased Approach
– In Part II we evaluate base current and gain and use this information to design a working transistor circuit …… KC0EW 26
Automate the FT-757
– Ready for robot radio? An inexpensive micro is all that you need to computer control your Yaesu …… KA6IFQ 30
That Glorious Gonset
– With 300 Watts on 2 meters the Gonset 972 thumbs its nose at solid state. Rebuild one and be heard! …… KT2B 34
A Space-saver Seven Megger
– Stuffing full-wave 40m loops into tiny places is W8TYX’s specialty. We finally got him to tell us how he does it …… W8TYX 44
Shoestring RTTY
– Build a commercial-quality computer interface for under $30 …… W9ODK 46
Is Your Repeater Dying?
– With this 16 channel telemetry encoder you have a remote chance of finding out …… WA4TEM 50
How Good Is Six?
– Try 50 MHz with a transceiver you’ve built from scratch. There’s no greater pleasure than saying “I did it myself!” …… KL7GLK 57
73 Amateur Radio Today – January 1985
