jks

Okay, the bug is that where you say echo "Selected antenna: $sel" you need to say antennas i.e. plural. This is because most of the backends have the possibility of mixing antennas and hence returning multiple antennas selected at the same time. The parsing of the response is fixed and looks for "antennas" specifically.

Your script is very good. I had the impression you didn't quite know what to do. But it's absolutely fine. Here's a version with a simulation mode (SIM=1) I used to find the problem without actually having the raas4 hardware:

What happened to your previous script? It was much closer to being correct. That vibe thing is crap.

Your AntSW_ShowBackend function needs to return info in the exact format as shown below (example from the beagle-gpio backend). A version number as second parameter is missing. The number of channels 3rd parameter is missing the "ch" directly after the number. A "mix" or "nomix" 4th parameter needs to indicate if the switch can mix antenna selections.

Get rid of that case ... esac stuff at the end.

AntSW_ShowBackend() {
  ...
  echo "beagle-gpio v2.0 10ch mix not-applicable"
  ...
}

Thanks. Will be fixed in the next release (v1.811)

The most common three Alpha stations are currently active. ID'd by their relative timing using the Kiwi FFT extension with Alpha integration preset. Heard on Kiwi in Finland, Tambov and Khabarovsk.

Okay, I fixed this. Wasn't too bad. Will be in the next release.

Will allow any future internal extensions that use the waterfall to work also (currently our WSPR and FT8 internal extensions only use the audio stream).