This may be a bit niche for people, but does anyone else contribute ADS-B or MLAT data, and what’s your setup?
I used to used a generic DVB-T tuner with a Raspberry Pi Zero. I’ve recently upgraded to the new FlightAware Pro dongle with the built in low pass filter and the newer Raspberry Pi Zero W.
For those who don’t know, this is a way to track aircraft.
360Radar is the best way to track military and non-commercial aircraft. It does this by calculating the pings between users base stations and calculating where the aircraft is (as the most basic explanation).
By feeding to these services I get a premium account for free.