Do you have jagged, wiggly MLAT tracks when viewing your local dump1090 client? If you’re using the ADSBexchange image install for Raspberry pi, it’s likely because the dump1090 display is showing both FlightAware and ADSBexchange MLAT results. FlightAware does have a more complete (but filtered/obfuscated) MLAT network, so your best bet if these squiggly tracks bother you is to simply have your dump1090 show only FA tracks. If you want to do this, here’s the procedure:
SSH into your pi Login: pi Password: flightaware (it's based on the piAware 3.1.0 image, of course!) cd adsb-exchange nano adsbexchange-mlat_maint.sh (Now arrow down to the 2nd to last line of text, starting with "/usr/bin/mlat-client" and arrow all the way over to the end of the line, likely off the screen) Delete the last part of the line "--results beast,connect,localhost:30104") Press Control-x, then "Y", then enter. Reboot your Pi with the command "sudo reboot now"
That will cause mlat-client not to request ADSBexchange feed back MLAT results to your pi. You will still be sending your data to ADSBexchange to
allow MLAT calculations, however.