Originally Posted by Lifesaver2000
Hey Mike. Interesting you should mention the old Tandy Color Computer. Did you ever use it for Packet Radio back in the 80's or 90's? I used to have one, used an MJF-1270 TNC and some old software called "CoCoPact" or something like that. I don't think that software would work for what you want to do, but I haven't heard MJF and Tandy Color Computer in the same sentence in many years and was just curious if you were an old packet operator.
I used to have software for my CoCo to translate HF Weather FAX transmissions. You simply plugged the radio into the CoCo's cassette interface with no additional hardware required. There was also a few that worked similarly for CW and RTTY which worked rather well (although tuning and receiver frequency stability was quite critical).
To the OP, you may try a generic terminal emulation software (here are a few http://www.ttwin.com/
) set to standard ASCII emulation mode. You'll need the manual (which it sounds like you've found) for the interface hardware since you'll need to manually send it the necessary commands that the normal software normally would handle for you. These codes would be used to switch between command mode and terminal mode (or whatever terms your interface calls them anyway), amoung other things. In command mode you would send commands to activate RTTY mode, set options, etc. and the commands wouldn't be sent out to your transmitter. In terminal mode, what you type would be sent out to your transmitter.