[Android] Add option to beacon on active frequency or regional APRS watering hole frequency #385
Description
We need a new option in the APRS section of settings, after "Beacon my position".
"Beacon to frequency" with drop-down options:
- Current (selected by default)
- 144.3900
- 144.5750
- 144.6400
- 144.6600
- 144.8000
- 145.1750
- 145.8250
This will allow people to do things like listen on their local repeater, but beacon periodically to 144.39 (in the US).
We also need to update the automatic beacon code to first switch to the chosen frequency, beacon, then return to the previous frequency (or perhaps resume scanning if the user was scanning at the time of beacon).