Remember that radios of this vintage require an old, slow DOS computer, or the system won't talk properly.? I use a Compaq 386 "lunchbox" computer that is native DOS (and works just dandy on Desktracs), so I can't comment specifically on your setup, but make sure it's running slow.
The switch on the Desktrac selects whether you are programming (1) the main radio, (2) the repeater radio, or (3) the remote panel.?
As I recall, the procedure is to use the Maxtrac software to program the radios, then go back and use the special Desktrac software to finish up.
For what it's worth, Desktracs seem to all have their own firmware version (V5.36).
Also don't forget that if you are going out of the original frequency range, you will need the modified ham firmware or power out and deviation will be unpredictable.? Details on this are found in the Ham Friendly Firmware articles in the Maxtrac area here on Repeater-Builder, or you could email me.
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Good luck - Kurt
