Article 221 of comp.binaries.cbm:
From: RUDMANS@meto.govt.uk
Newsgroups: comp.binaries.cbm
Subject: Digicom 64  (Part 0/1)  64
Date: 27 Feb 1995 18:59:02 GMT
Organization: Gustavus Adolphus College
Lines: 43
Approved: mmiller3@gac.edu (comp.binaries.cbm)
Message-ID: <3it7dm$dpk@news.gac.edu>
NNTP-Posting-Host: poblano.gac.edu
Originator: mmiller3@poblano

DIGICOM>64    COMPUTER NETWORKING BY RADIO

Enclosed is v3.60 Digicom>64, a radio networking program for
the 64 implementing the AX.25 protocol. Thanks are due to Florian 
DL8MBT for writing it and putting into the public domain.

There are 3 essential files here. digicom-v3.60 and dc-par-1
and dc-par-0 which contain startup parameters affecting 
operation. When you have uudecoded these files using the 
decoder in the marvellous ACE operating system or a uudecoder
available from eg nic.funet.fi, run LOAD "DIGICOM-V3.60",8,1 and RUN.
Digicom should start without problem. Hopefully x1541 has done
its stuff and I transferred everything ok! Use :HELP or :DISPLAY
to show commands. Preceding a line with : means it's a command
to DIGICOM. No : means transmit these characters on to the radio
link. Set your callsign with MYCALL ????? where ????? is your callsign.
Use  CONNECT ????? to connect to another station with callsign ?????. 

It's a good idea to listen to packet activity for a while to get an
idea of the local scene before starting to transmit. Remember to
observe your country's laws regarding amateur radio transmissions!
Other hams will help you explore Digicom's many features!

CWID-64 is a program that you should run before loading digicom
if your country demands you transmit your callsign in morse during
your packet radio transmissions (once every quarter hour in UK). It
is a patch to digicom that you only need to run once and is irreversible so
keep a spare copy of digicom.

The digicom modem plugs into the cassette port. A nice design appeared
a while ago which was by Craig Rader N4PLK and others which used a
single chip modem (TCM3105) powered from the cassette port. I've built it
and it is only 3" by 2". Then a simple cable will connect you to the radio
push-to-talk switch, microphone, and audio connectors. Even a walky talky
can be used to good effect.

rec.radio.amateur.digital.misc would be a good place to ask general 
radio networking questions.

Stephen Rudman
srudman@email.meto.govt.uk               1994