More experimenting with the QDX:
I told WSJT-X to listen for FST4W on 600m, and it works.
Decoded a few stations!
Just RX only, since I can't tune the antenna for those bands, and I have no idea if the QDX would want to TX on those bands safely.
Looking at the radio computer. Debian 12 upgrade clonkered shared libraries and broke built-from-source WSJT-X software.
No problem. I'll move aside the /usr/local/bin/wsjtx binary, and default to the packaged version.
Ooo, which is more recentful!
Any higher freq FST4W activity? Yes, on 20m! Supposed to suck there, because long tx with wiggly band behavior works poorly.
Well, I can't put up a 2200m quarter wave vertical, can I? Ha! Nope!
So I will squeak on 20m.