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HAM Radio 3.2
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Ham Radio Version 3.2 (Chestnut CD-ROMs)(1993).ISO
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mods
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mods.exe
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TAPR.1
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1990-09-05
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36 lines
TAPR.1
Brimming with success, I next tackled the State Machine Mod
Kits for TNCs using other than XR 2211 Demod circuitry. No problems
were encountered with assembly - everything dropped right into place.
After the first unit was completed, I began to install it in the KPC-2.
The installation instructions provide information about installing
the unit in TNCs containing the more common generic single-chip
modems. Required inputs consist of +5 Volts, Ground, Recieve NRZI data,
DCD output from the modem chip, and a clock signal source (19.2 khz or
38.4 khz for 1200 baud). I discovered that the KPC-2 did not have a
clock source available, so I went to plan 2 - my KAM.
The instructions covered installation in a KAM, so I thought I
had it made. All the connections were made and checked. All looked
fine. Then, I put the audio to it. It worked - backwards... The
KAM needed positive DCD out and the instructions used the negative
DCD out. I lifted the green wire and put down the yellow wire and...
EURIKA !!!
CONTINUED IN FILE TAPR.2