Thanks to everyone for their suggestions. I have the controller up and running now, thanks to the DTMF encoder built into the RCP software. The Repeater-Builders Friend will have to wait for a bit, most likely until a hamfest, when I come across an old HT or a unmounted encoder, for cheap-like, I really don't need the microphone, but it was free, which fits well into my budget for the project.
73's Jeremy Lobaugh KB3BAM
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