73 Amateur Radio Today – March 1980
Issue Contents:
Good-bye to Autopatch Hassles
– low-cost remedies to common problems …… WB2LEI/4 30
Baudot-aSCII Converter Follow-up
– add a FIFO buffer for typing ease …… VE4YD VE4CM 34
CB to 10
– part XXII: more talk power for the TRC-11 …… N4APN 38
The L With It
– an alternative to the variable inductor …… K4KI 40
Future Rig and Rigamarole
– are you ready for faster-than-light propagation? …… W6HDM 44
Gone But Not Forgotten
– supermods for the HW-2021 …… AD5X 48
The History of Ham Radio
– part XI …… W9CI 54
CB to 10
– part XXIII: the Sears Roadtalker 40 …… W6SZS 58
Neat Readout for the 2036
– displays frequency on S-meter face …… K3GRX 62
Modernize That Boat Anchor!
– older tube rigs are more fun when you give them the solid state treatment …… AD5X 66
Ham Shack Numerology
– a gentle introduction to electronic math …… W6HDM 70
COMPULOG: A Multi-purpose Record Keeper
– whither the paper logbook? …… WA1ZSE 74
Computer System I/o Interface
– handles RS232 20-mA loop and KC Standard conversions …… VE3CAF 78
Number Fun on your Micro
– explore mathematical curiosities with your TRS-80 …… W3KBM 80
Baudot Message Formatter
– In BASIC …… W6RLL 82
Lab-quality Hi I Supply
– part I …… McClellan 88
A Do-it-Yourself Speech Compandor
– let’s experiment! …… W6TNS/7 96
Morse Converter for Frequency Displays
– another break through for blind hams …… WA6AXE/kH6 107
On the Trail of the Hamburglar
– retrieving ripped-off radios …… W0EX 116
73 Amateur Radio Today – March 1980
