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.
Rich
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.
That should provide enough info to get you started with building up a command set list. Serial is very easy to sniff the data from.
That model uses the typical PC/IF interface which I think is actually TTL level at the radio so keep that in mind if you decide to try and sniff the data. It may be easier to use something like one of the Icom CT-17 CI-V clone interfaces as they convert back to RS232 levels at the computer end plus the TX and RX lines are available separately at the computer end.
For simple data sniffing, the TTL/RS232 voltage difference should not really be an issue though as long as whatever you are using to isolate the sniffing wire from the actual rx/tx wire can detect the voltage swing so it can detect 1's and 0's (high and low voltage swings).
TTL will generally be a lower voltage than RS232 so no harm should be done by your sniffing interface as you won't be injecting any voltage back onto the TTL level bus.
You should also be able to confirm the baud and serial protocol used with a sniffer tap and a decent terminal program where you can select the protocol and baud rate.
I don't know if Mac has a serial terminal program but I'd imagine you can find something that will run on Mac or Linux.
I use Symantec's Procomm Plus on a Win machine for my serial needs.
I found it a lot easier to customize compared to the older versions of say Hyperterminal. Telix was also another favorite of mine back in the DOS days but I never liked the Win version of Telix. So I got hooked on Procomm which I think was written by another company, in Columbia, MO, before Symantec bought them. I don't recall if there was a DOS version of Procomm before Symantec messed it all up.
Any decent serial terminal program should work fine though as long as you can capture and log the data once you get the baud and protocol set correctly. Then run whatever control software you can find through all it's commands and see what shows up when you send commands to the radio!
I also believe what pro92b said to be correct about the baud rate being 9600.
There was also a problem with some of the data ports on the PRO-2051's.
I think that has to do with what pro92b was saying about two different firmware versions. Possibly fixed with the newer FW version?
Here is an old short thread about the issue:
http://forums.radioreference.com/radio-shack-scanners/25275-pro-2051-computer-interface-issue.html
Good Luck!