FM radio stops after a short while

[ChicagoEyeTVguy2 0]

For the last few days FM radio has been stopping. The sound stops, timer stops. None of the controls or changing stations will unstall it.  Switching to TV and then back to Analog radio will get it going again, but only for a short while (20 seconds to 3 minutes or so.) . Unplugging and replugging the dongle with get it going again, but only for a short while. Quitting ad restarting EyeTV will get it going again.

I'm on a 2012 Intel Mac Mini running 10.11.

EyeTV Hybrid (the only one with FM- 2009?)

Things I've tried, with no success:

-updating to latest EyeTV for my mac (3.9 build 7530)

-swapping in a known good dongle

-moving the archive from the external drive (USB) where it's been working fine forever to the internal drive

-restart

-different USB cable

-contacting geniatech (no response.)

Thanks for any suggestions.  The only thing I can think of that really changed was that a backup drive went kablooyey (it was the drive that backed up the drive where the EyeTV archive normally lives) and was a bit toxic. The drive where the archive normally lives is fine.