PPM auto-adjust 11-16-25 Nightly

[MarkJ]

I’ve now had several instances where the tuner PPM auto-adjust is adjusting to an impossible number like -95.2 causing my Airspy mini to stop receiving altogether. I’ve now had it happen on two separate Airspy minis, so it’s probably not the dongle going bad. So far, it only happens on dongles that are not monitoring continuous control channels. It happens on dongles that are set to monitor a tuning range like 470-476 or 460-466 and receive conventional P25 channels and NBFM channels. I’ve shut off auto adjust on these dongles and everything works fine, but I never saw this behavior on 0.6.1 Final. Any idea what might be causing this?  

[sdrtrunk]

The new P25P1 and DMR demodulators are using a different approach to calculating the PPM offset which may be contributing to auto-correcting the tuner incorrectly.

I'll have to see if I can put some tighter constraints on that process to keep it from doing that.