TNC220

From: VE3PAZ@VE3JF.ON.CAN.NA
Subject: pac-comm problem with UO-14

Following message has been reformated from a binary file dump collected
from FO-20 by the automatic AMSAT station operated by ve3paz in Ottawa.
Hope this helps anyone over this way who is having the same problem

Hello All @ AMSAT
 
The following modification to the 220 will allow your Tnc to operate at
9600 bauds in Fullduplex. For those of you who thought you already could I
suggest you try it.
 
It must be mentioned at this stage that the version of my 220 is 1.3. If
yours is a different version then the story may be different, but I doubt it.
The reason for this mod is to allow my station to operate on UOSAT3 FULLDUPLEX.

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Previous to this mod I have been ripping my hair out as to why I could not
digipeat via UOSAT3. When one day I discovered that when I changed the
baud speed to 9600 and then put Fullduplex on the txbaud rate changed back
to 1200 whilst the rx rate remained at 9600. Most perculiar I thought.
CONTINUED IN FILE TNC220.1