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.

On Jan 1, 2023 at 17:23 +0100, Benjamin Henrion via Starlink <starlink@lists.bufferbloat.net>, wrote:

Le dim. 1 janv. 2023 à 12:49, Oleg Kutkov via Starlink <starlink@lists.bufferbloat.net> 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

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