I set back to 20 yesterday evening and I’ve not had one dropped sample reported.
However, a really strange side effect is that since doing that, I’ve not reported a single MLAT aircraft.
MLAT is still enabled but I’m not synced to anyone else.
CPU usage went up (which I’d expect).
I’ll put it back to 12 now and see if it starts reporting MLAT again.
/edit - Yes, I’ve switched back to 12 and am reporting MLAT aircraft again.
How exactly are you checking?
It may be that the dongle is internally somehow dropping samples because it has insufficient voltage or whatever reason not to do its job.
Maybe that’s not reported on the console.
Yeah that should show it.
Very strange. But obviously it’s dropping samples otherwise MLAT should work.
Yup, I agree. Interesting experiment though.
Hi guys. Sorry for the long silence (lots of work on the new Airspy).
There’s another parameter involved: The firmware of the Airspy can also “silently” drop packets if the host’s USB controller is too slow. It requires a very complex protocol to track these drops, and it will cost even more bandwidth to communicate this information, which translates into more drops. No free lunch.
The good news is that the USB controllers (both Airspy and Host) give consistent results. If your test shows that there are no “hidden” drops, then your system is fine. If there are any other problems related to the non real-time nature of the kernel/RPi hardware, they can be detected, tracked and compensated for in the MLAT counter in airspy_adsb.
Would you say this is acceptable amount of Lost Samples 24 hours
there not constant but regular
pi3b
triple filter amp
flightaware antenna
gain
journalctl -efn -u airspy_adsb
– Logs begin at Thu 2016-11-03 17:16:45 UTC. –
May 31 22:25:25 piaware airspy_adsb[32151]: Caught signal 15
May 31 22:25:25 piaware systemd[1]: Stopping Airspy ADS-B receiver…
May 31 22:25:25 piaware airspy_adsb[32151]: Decoding stopped
May 31 22:25:25 piaware airspy_adsb[32151]: Client disconnected 127.0.0.1:33334 (beast)
May 31 22:25:25 piaware systemd[1]: Stopped Airspy ADS-B receiver.
May 31 22:25:25 piaware systemd[1]: Started Airspy ADS-B receiver.
May 31 22:25:25 piaware airspy_adsb[18711]: Listening for asavr clients on port 47806
May 31 22:25:25 piaware airspy_adsb[18711]: Listening for beast clients on port 47787
May 31 22:25:25 piaware airspy_adsb[18711]: Acquired Airspy device with serial 26A464DC28293293
May 31 22:25:25 piaware airspy_adsb[18711]: Decoding started at 12 MSPS
May 31 22:26:25 piaware airspy_adsb[18711]: Client connected from 127.0.0.1:38578 (beast)
Jun 01 05:40:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 05:50:05 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 05:50:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 05:50:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 05:50:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 06:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 06:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 06:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 06:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 06:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 06:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:20:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 07:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 07:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:02 piaware airspy_adsb[18711]: /!\ Lost 393216 samples /!
Jun 01 07:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 07:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 07:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:00:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:00:03 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 08:00:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:00:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 08:40:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 524288 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:00:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 09:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 10:20:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 11:00:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 11:00:03 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 12:40:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 13:20:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:20:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:20:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:20:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:20:03 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 13:20:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:20:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:20:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 13:30:05 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 15:20:04 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 16:50:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:03 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 16:50:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 16:50:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:02 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 262144 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
Jun 01 17:30:03 piaware airspy_adsb[18711]: /!\ Lost 131072 samples /!
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Pretty much no amount except on startup is acceptable for me.
Curious that you are having problems at 12 MHz.
Looking at the timestamps it is probably a cronjob running every 10 minutes.
What do you have installed on the RPi?
This is where most automatically installed cronjobs are found:
ls /etc/cron.d/
Just this
ls /etc/cron.d/
adsb-receiver-performance-graphs php
heres htop results
looks like i got 3 airspy-adsb running ?
3 threads all part of the same process. Completely normal.
Yeah it’s the graphs most likely combined with a weak power supply.
I’d suggest you switch to my graphs:
GitHub - wiedehopf/graphs1090: Graphs for readsb / dump1090-fa / dump1090 (based on dump1090-tools by mutability)
They don’t run 2 graph generations at the same time like adsb-receiver graphs and have some pause builtin between individual pictures being created.
After installing delete the cron file for the old graphs.
sudo rm /etc/cron.d/adsb-receiver-performance-graphs
You’ll need to use the URL to get to my graphs, the menu version won’t work anymore.
It will keep the accumulated data though.
Yes all done
thankyou
john
So interesting I have been trying to get the Airspy R2 to work and I can’t ever get it to sync up with MLAT. I tried it on my Pi replacing the receiver and always was out of sync. Built a new Odroidxu4 system that would have enough power to run it, using a 6 amp power supply and I can get it to work and MLAT on the FA page shows GREEN on the status, yet I am not synchronized with any sites. Any idea what I am missing here?
RPi 3B+ should be absolutely sufficient unless you use 20 MHz sample rate.
One of the most common problems recently: Location not set accurate enough.
The location shouldn’t be off by more than 20 ft.
That means using 4 or 5 decimals for GPS coordinates.
Also make sure the height is correctly set.
I suspect this is the site in question: https://flightaware.com/adsb/stats/user/csweeney05#stats-102685
Did you just today switch to the airspy on that feeder?
Seems like ADS-B positions aren’t as many as they should be either.
What is your airspy configuration?
That is the correct site, that is just my testing box, antenna sitting in the window it’s not going to pick up as many as my main site with the antenna outside. I was not able to get the RPi 3B+ to sync up at all, I tried different power supplies, the official one as well, nothing I did could get MLAT to sync. I build this Odroidxu4 system for more power and finally tried it on that the last few hours and was not able to get it to sync MLAT as well. The only difference in my success/failure was on the Pi the FA status page went RED on MLAT and said it was out of sync, now it shows in sync and green but sync with ZERO sites. I have confirmed the GPS coordinates to 5 decimals.
I have tried a few different configs the current one running is
OPTIONS= -v -f 1 -x -m 12 -b
And how is it connected to piaware?
How did you do the configuration?
Try removing the -x option, it can produce bogus messages. It’s unlikely this is a problem but still.
Is the airspy binary current?
Did you set the height above ground or above sea level?
Is anything else connected via USB?
The height is above ground and I used your script to install. The only other thing installed via USB is the other dongle for UAT 978 which maybe that could have been the problem on the Pi but on the Odroid there is no way having anything else plugged in should be a problem.
Seems that is not the case.
@thespeedycab couldn’t run -m20 while dump978 was doing it’s thing on the same machine (odroid N2?)
Anyway unplug the second dongle and check if it fixes your problem.
May very well be that the rtl-sdr driver used by soapy-sdr somehow interferes with USB by sending a lot of bogus packets or something like that.
I will try that for the heck of it and see what happens, but CPU is no where near loaded, and with USB 2.0 and 3.0 ports and one on 2.0 and one on 3.0 I just don’t think that would be a problem. I will give it a shot later and see what happens. Thanks!
That should indeed be separate controller chips then and unable to interfere.
Still trying it doesn’t hurt.
But i’m mostly out of ideas now.
(I suppose the MLAT worked with the same station in the same location but using a differnent dongle? One more reason it can’t be location.)
Any chance you are somehow using the same feeder-id on two devices at the same time?
Showing synchronized now.