I use my old #Kenwood #TM201A for my #APRS digipeater, but was just thinking it would be cool to switch the frequency from 144.39 (North America APRS) to 145.825 (ISS APRS) when the ISS was near the horizon.

Of course, I don't want to do this manually!

Was down a rabbit hole to figure out how the "remote jack" control port worked, but just realized that I can use the "up" and "down" buttons on the MIC connector--I am already running audio/PTT through it.

@smitty #Kenwood #TM201A, a whole 25W at high power. Send and receive still appear to work, but it was getting pretty hot.