3 ms·
Sure, GPS SDR Sim[1] works just fine. You will want to be in an RF chamber of some kind not only to prevent the terminal from seeing natural GPS signals, but a
by jandrese 5y ago
Sure, GPS SDR Sim[1] works just fine. You will want to be in an RF chamber of some kind not only to prevent the terminal from seeing natural GPS signals, but also to prevent you from screwing up the GPS in nearby satnav systems. Also because broadcasting on those bands on public airwaves is illegal as a private citizen.
Of course putting your satellite antenna inside of a RF chamber also prevents it from working, so this may not be a viable long term strategy. Plus the terminal is undoubtedly using the GPS coordinates to calculate the antenna steering profile so you won't be able to lock on if your GPS is wrong. But since all they want to do is enable access to dump the firmware this probably isn't an issue.
[1] https://github.com/osqzss/gps-sdr-sim https://github.com/osqzss/gps-sdr-sim
- squarefoot 5y agoSpoofing GPS might be dangerous should the dish detect coarsely its position also from the IP satellite link. If it does, then having the incoming data telling one position and the GPS a very different one, would likely trigger some protection.
- ta988 5y agoI'm sure they would reactivate you if you say you work for the bounty. You do work for almost free...
- uniqueuid 5y agoYikes. Thanks for the details AND the warnings. An interesting question, however, is whether Starlink checks whether the satellite you're tuned to is plausible given the GPS coordinates ...
- ta988 5y agoThere is only one way to know until that thing gets reversed...
- useryman 5y agoFrom working on hardware with GPS-functionality tacked on before, I can suggest a simpler solution; 1: Find the GPS module, and look up its data sheet. 2: Spoof the data coming out of its IO ports. Cheap GNSS modules that spit out NMEA messages on a serial line are everywhere. (I guess because they're super cheap, and easy to integrate)
- jandrese 5y agoIf it is a separate chip this is a good solution, but these days you're more likely to find it integrated into something else.