Spurious headphone detection interrupts

[KC9UDX]

Using an isolated switch, but letting the socket do the audio route switching would then be ideal, I guess. The isolated switch could tell the software which output is active, but not rely on the software to do the routing.

Diagram C would not work for the PBP as designed, because it does not accept a microphone input. I would not eliminate that (even though I don't currently use it).

I still wish I had time to add a dedicated socket for the serial terminal.