There is also interesting behavior. If you physically disconnect the Starlink GNSS receiver from the SoC, it still connects to the Starlink satellites, but it takes up to 20-25 minutes. It looks like there is some fallback mechanism, like RF sync on their own satellites. But for normal operation, they use GNSS (GPS + Galileo) to set the system time faster. On 1/1/23 19:09, Mike Puchol via Starlink wrote: > I can confirm that spoofing with “non-milspec” methods don’t seem to > work against the receiver in the Starlink terminal. I tried with a > HackRF and a USRP and it didn’t work, while an Android phone was > spoofed fine. I was however able to jam the receiver with very > moderate power levels and a sweep generated with a HackRF Portapack > and patch antenna. > > Best, > > Mike > On Jan 1, 2023 at 17:23 +0100, Benjamin Henrion via Starlink > , wrote: >> Le dim. 1 janv. 2023 à 12:49, Oleg Kutkov via Starlink >> a écrit : >> >> Hi, >> >> Starlink has a multisystem GNSS receiver with data filtering, so it >> can't be fooled with the single HackRF (i tested it). >> >> >> Here they describe another method with gps jammers: >> >> https://gpspatron.com/spoofing-a-multi-band-rtk-gnss-receiver-with-hackrf-one-and-gnss-jammer/ >> >> >> I experimented with NMEA data injected directly into the Dishy >> operating >> system, so I can tell there is no way to cheat the system. >> Satellites know your location a wouldn't accept a connection from the >> client in an unexpected Cell. All connection slots for all >> clients and >> areas are scheduled. >> >> Besides this, Starlink requires valid and strict GNSS and 1PPS to >> sync >> the local clock, that's vital for the TDD system. >> >> >> On 1/1/23 13:18, Benjamin Henrion via Starlink wrote: >> > Hi, >> > >> > Just wondering if you could pay less by pretending to be in >> Colombia >> > by spoofing gps sats with a HackRF board: >> > >> > >> https://mobile.twitter.com/GeoffreyHuntley/status/1609490537484275712 >> > >> > Best, >> > >> > _______________________________________________ >> > Starlink mailing list >> > Starlink@lists.bufferbloat.net >> > https://lists.bufferbloat.net/listinfo/starlink >> >> -- >> Best regards, >> Oleg Kutkov >> >> _______________________________________________ >> Starlink mailing list >> Starlink@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/starlink >> >> _______________________________________________ >> Starlink mailing list >> Starlink@lists.bufferbloat.net >> https://lists.bufferbloat.net/listinfo/starlink > > _______________________________________________ > Starlink mailing list > Starlink@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/starlink -- Best regards, Oleg Kutkov