The military air communications monitoring enthusiasts over at milaircomms.com have been using a system involving RTL-SDRs to monitor military air traffic through ADS-B. While military aircraft generally do not transmit GPS position information like commercial aircraft do, they are still able to record live information such as the aircraft’s hex code, registration number, aircraft type, the base station location and a graph of recorded altitudes. They also log all this data showing where military aircraft have been spotted over time.
To receive this information they so far have a network of about 30 volunteers running RTL-SDR based ground stations that use their custom MilAirComms1090 software. If you want to contribute, the software is available for Windows and for Linux/Raspberry Pi.
Previously we posted about how it was possible to listen in on Mexican (or Brazilian?) military satellite radio pirates’ SSTV communications using an RTL-SDR. Now over on YouTube user legion elmelenas has uploaded a video showing some more Brazilian pirates using these military Fleetsatcom satellites for voice and data communications. To receive these signals he used a turnstile antenna.
SATCOM BRAZILIAN PIRATES RTL-SDR SDRSHARP USA FLEETSATCOM SATELLITE