As of 9/25/2019 GL01 Airspy rdfeed66 Xon Pilot-256 odroid-delaware Airspy 004-035 GB3WB egph-fedder-01 DutchRadar-Plaats Chuck-02 jest-1 UNEE rfmyrick CookieMonster BlackstarX feeder01 M98 adsbgsp miami-wings T-RJCC17 Marina-01 spadge007 realtek_syno2 BoistiKTown0 kron-flight BADK-01 thobie-01 termigrator-01 kuuno-02 RADAR SRT2022_2 sq2cet-01 flightfinder benny EDDH205 GF1 pired0 WHS39 seltsam MANU68_60274b_1.26vlan ELLX3 WilSG HansW ULERK-03 polder-feed-nl Sushi adsb01 RoundyADS-B AndosPi Rush pbmk14 phpsystems-01 skywatch_red01 Spacer piFront If you are one of these feeders, you need to verify you hemisphere (lat, long) and make sure Pi clock is synced with NTP or GPS.
It's also possible that an insufficient power supply is the cause, you can check like this: Code: sudo dmesg --ctime | grep voltage If under-voltage was detected, you need a better power supply. The Official Raspberry Pi power supply is a good choice. As it's not descreibed above, this is how to install NTP: Code: sudo apt-get install ntp