Thanx, but this is not what I need. The owner's manual does NOT have any information on the interface.
The "software" will be what I create to communicate with the radio.You didn't say what software you will be using.
Probably depends on what software you will be using, check their documents and/or help files.
I was afraid that was the case, as a thorough Internet search turn up nothing.Radio Shack historically has not released protocol for its scanners since they often sold licenses to for profit software vendors who write such programs. The PRO-2051 was never particularly popular and is supported only by Scancat as far as I know. The Scancat site indicates the radio had two firmware versions that need different program timing. Baud rate is 9600 bps according to info on the Scancat site.
If Scancat has a free demo version you can use a serial port monitor to learn the commands by running the demo. The radio also has a clone mode that may provide another way to reverse engineer the protocol using a serial port monitor. Maybe all this would be more entertainment than you bargained for but I don't expect you will find the protocol spelled out in a file on the web.
Yep, I'd try what pro92b said and just build yourself a little serial breakout box and try and sniff the serial data. Run a program like Scancat or ARC433 (much better) and run it through all the possible keystrokes and other commands while you capture the sniffed data.I was afraid that was the case, as a thorough Internet search turn up nothing.
I'll see what the Scancat demo looks like, if it can be run on Wine.
Thanx for the suggestions.