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<p>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. <br>
</p>
<p>But for normal operation, they use GNSS (GPS + Galileo) to set
the system time faster.<br>
</p>
<div class="moz-cite-prefix">On 1/1/23 19:09, Mike Puchol via
Starlink wrote:<br>
</div>
<blockquote type="cite"
cite="mid:895ff23b-a263-4cf1-abf5-d403a63e5b0c@Spark">
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<div dir="auto">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.</div>
</div>
<div name="messageSignatureSection"><br>
Best,<br>
<br>
Mike</div>
<div name="messageReplySection">On Jan 1, 2023 at 17:23 +0100,
Benjamin Henrion via Starlink
<a class="moz-txt-link-rfc2396E" href="mailto:starlink@lists.bufferbloat.net"><starlink@lists.bufferbloat.net></a>, wrote:<br>
<blockquote type="cite" style="border-left-color: grey;
border-left-width: thin; border-left-style: solid; margin: 5px
5px;padding-left: 10px;">
<div dir="auto">
<div>
<div class="gmail_quote">
<div dir="ltr" class="gmail_attr">Le dim. 1 janv. 2023 à
12:49, Oleg Kutkov via Starlink <<a
href="mailto:starlink@lists.bufferbloat.net"
moz-do-not-send="true" class="moz-txt-link-freetext">starlink@lists.bufferbloat.net</a>>
a écrit :<br>
</div>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Hi,<br>
<br>
Starlink has a multisystem GNSS receiver with data
filtering, so it<br>
can't be fooled with the single HackRF (i tested it).<br>
</blockquote>
</div>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">Here they describe another method with gps
jammers:</div>
<div dir="auto"><br>
</div>
<div dir="auto"><a
href="https://gpspatron.com/spoofing-a-multi-band-rtk-gnss-receiver-with-hackrf-one-and-gnss-jammer/"
moz-do-not-send="true" class="moz-txt-link-freetext">https://gpspatron.com/spoofing-a-multi-band-rtk-gnss-receiver-with-hackrf-one-and-gnss-jammer/</a><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto">
<div class="gmail_quote">
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
I experimented with NMEA data injected directly into
the Dishy operating<br>
system, so I can tell there is no way to cheat the
system.<br>
Satellites know your location a wouldn't accept a
connection from the<br>
client in an unexpected Cell. All connection slots for
all clients and<br>
areas are scheduled.<br>
<br>
Besides this, Starlink requires valid and strict GNSS
and 1PPS to sync<br>
the local clock, that's vital for the TDD system.<br>
<br>
<br>
On 1/1/23 13:18, Benjamin Henrion via Starlink wrote:<br>
> Hi,<br>
><br>
> Just wondering if you could pay less by
pretending to be in Colombia<br>
> by spoofing gps sats with a HackRF board:<br>
><br>
> <a
href="https://mobile.twitter.com/GeoffreyHuntley/status/1609490537484275712"
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true" class="moz-txt-link-freetext">https://mobile.twitter.com/GeoffreyHuntley/status/1609490537484275712</a><br>
><br>
> Best,<br>
><br>
> _______________________________________________<br>
> Starlink mailing list<br>
> <a href="mailto:Starlink@lists.bufferbloat.net"
target="_blank" rel="noreferrer"
moz-do-not-send="true" class="moz-txt-link-freetext">Starlink@lists.bufferbloat.net</a><br>
> <a
href="https://lists.bufferbloat.net/listinfo/starlink"
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true" class="moz-txt-link-freetext">https://lists.bufferbloat.net/listinfo/starlink</a><br>
<br>
--<br>
Best regards,<br>
Oleg Kutkov<br>
<br>
_______________________________________________<br>
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href="https://lists.bufferbloat.net/listinfo/starlink"
rel="noreferrer noreferrer" target="_blank"
moz-do-not-send="true" class="moz-txt-link-freetext">https://lists.bufferbloat.net/listinfo/starlink</a><br>
</blockquote>
</div>
</div>
</div>
_______________________________________________<br>
Starlink mailing list<br>
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</blockquote>
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<br>
<fieldset class="moz-mime-attachment-header"></fieldset>
<pre class="moz-quote-pre" wrap="">_______________________________________________
Starlink mailing list
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</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Best regards,
Oleg Kutkov</pre>
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