I've had no GPS false alerts since Craig added the NMEA checksum validation and I fixed the VW e-Up state detection. That is, until war on Ukraine began. Since then, I've had multiple alerts, mostly late night. I wouldn't have thought military GPS jamming or spoofing would have an effect with that range, the next war region is ~ 1.200 km from here. I've added some more logging to see if we can detect and filter this. Reduced log from the latest event below. HDOP jumps from 1.8 (good) to 5.6 (bad), but only after the alert has been triggered. Should we generally scale the alarm threshold by HDOP (if available)? Regards, Michael 01:31:35 vehicle dist=15 smoothed=13 alarm=500 gpsmode=AA satcount=6 hdop=2.0 gpsspeed=0.0 01:48:30 vehicle dist=15 smoothed=15 alarm=500 gpsmode=AA satcount=5 hdop=1.8 gpsspeed=0.0 02:04:10 vehicle dist=15 smoothed=15 alarm=500 gpsmode=AA satcount=4 hdop=1.9 gpsspeed=0.0 02:20:50 vehicle dist=14 smoothed=16 alarm=500 gpsmode=AA satcount=3 hdop=500.0 gpsspeed=0.0 04:15:15 vehicle dist=260 smoothed=60 alarm=500 gpsmode=AA satcount=4 hdop=1.9 gpsspeed=0.0 04:15:15 vehicle dist=297 smoothed=107 alarm=500 gpsmode=AA satcount=4 hdop=1.9 gpsspeed=0.0 04:15:20 vehicle dist=216 smoothed=129 alarm=500 gpsmode=AA satcount=4 hdop=1.9 gpsspeed=8.5 04:15:20 vehicle dist=184 smoothed=140 alarm=500 gpsmode=AA satcount=4 hdop=1.9 gpsspeed=8.5 04:16:00 vehicle dist=1162 smoothed=344 alarm=500 gpsmode=AA satcount=4 hdop=1.9 gpsspeed=0.0 04:16:00 vehicle dist=1322 smoothed=540 alarm=500 gpsmode=AA satcount=4 hdop=1.9 gpsspeed=0.0 04:16:00 CEST W flatbed.moved gpsmode=AA satcount=4 hdop=1.9 gpsspeed=0.0 04:16:05 vehicle dist=1419 smoothed=716 alarm=500 gpsmode=AA satcount=5 hdop=1.8 gpsspeed=0.0 04:16:05 vehicle dist=1426 smoothed=858 alarm=500 gpsmode=AA satcount=5 hdop=1.8 gpsspeed=0.0 04:17:25 vehicle dist=710 smoothed=828 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=5.2 04:17:25 vehicle dist=303 smoothed=723 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=5.2 04:17:30 vehicle dist=245 smoothed=627 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:30 vehicle dist=233 smoothed=549 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:35 vehicle dist=161 smoothed=471 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=13.7 04:17:35 vehicle dist=143 smoothed=405 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=13.7 04:17:40 vehicle dist=100 smoothed=344 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:40 vehicle dist=87 smoothed=293 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:45 vehicle dist=50 smoothed=244 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:45 vehicle dist=36 smoothed=203 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:50 vehicle dist=127 smoothed=187 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:50 vehicle dist=136 smoothed=177 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:55 vehicle dist=110 smoothed=164 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:17:55 vehicle dist=104 smoothed=152 alarm=500 gpsmode=AA satcount=5 hdop=5.6 gpsspeed=0.0 04:18:00 vehicle dist=107 smoothed=135 alarm=500 gpsmode=AA satcount=6 hdop=1.8 gpsspeed=0.0 04:18:05 vehicle dist=57 smoothed=119 alarm=500 gpsmode=AA satcount=6 hdop=1.8 gpsspeed=9.4 04:18:05 vehicle dist=44 smoothed=104 alarm=500 gpsmode=AA satcount=6 hdop=1.8 gpsspeed=9.4 04:18:10 vehicle dist=34 smoothed=90 alarm=500 gpsmode=AA satcount=6 hdop=1.8 gpsspeed=7.2 04:18:15 vehicle dist=17 smoothed=66 alarm=500 gpsmode=AA satcount=6 hdop=1.8 gpsspeed=7.8 04:18:15 vehicle dist=6 smoothed=54 alarm=500 gpsmode=AA satcount=6 hdop=1.8 gpsspeed=7.8 04:18:25 vehicle dist=25 smoothed=35 alarm=500 gpsmode=AA satcount=6 hdop=1.8 gpsspeed=1.7 04:18:25 vehicle dist=29 smoothed=34 alarm=500 gpsmode=AA satcount=6 hdop=1.8 gpsspeed=1.7 04:18:35 vehicle dist=25 smoothed=30 alarm=500 gpsmode=AA satcount=5 hdop=1.8 gpsspeed=0.0 04:32:25 vehicle dist=15 smoothed=15 alarm=500 gpsmode=AA satcount=4 hdop=1.9 gpsspeed=0.0 04:48:15 vehicle dist=15 smoothed=14 alarm=500 gpsmode=AA satcount=5 hdop=3.1 gpsspeed=0.0 04:48:20 vehicle dist=15 smoothed=14 alarm=500 gpsmode=AA satcount=5 hdop=3.1 gpsspeed=0.0 04:48:25 vehicle dist=18 smoothed=15 alarm=500 gpsmode=AA satcount=4 hdop=3.1 gpsspeed=1.5 04:48:30 vehicle dist=14 smoothed=16 alarm=500 gpsmode=AA satcount=4 hdop=6.2 gpsspeed=0.0 -- Michael Balzer * Helkenberger Weg 9 * D-58256 Ennepetal Fon 02333 / 833 5735 * Handy 0176 / 206 989 26