Late with this one,
If the R100 s/w is like the Motorola Comapct the Euro version then there's an option create a e prom form scratch? look for a "select device" menu?
I've still got business radio users running these and the work well for that,?
For Ham use the 10W version will run 10-15W all daythe 25 W ones wont do "ham" lenthg overs unless you fit a lot of fans and do the PSU mod
Swap the linear PSU for a Good SMPS and the box runs much cooler,if you want to keep the linear psu swap the 100uf caps at least if not all!
On the TRC (Control) bd check the 100uF cap's its likely they will have leaked and that causes all sought of issues? probably worth swapping all the caps, never had issues with the caps on the radio chassis.
The sticky pad that holds the crystal on the radio processor board eats the leads out of the crystal if the can's rusty remove the pad and re fix, if your lucky the crystal will be Ok
Easy to to add a controller or your chose? there's a Compact manual in the RB files section that has a few added notes .
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Both R100 and the Compact? s/w will run on Win10 using dos box and a USB serial lead (FTDI)
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Cheers Jake g1yff