[time-nuts] GPS Outage

[Martin Burnicki]

Mark Sims wrote:
>> When is some organization going to explain what happened in February for almost two hours starting at 00:16 GMT?  That subject has gone silent.  Rob, NC0B
> I heard back from NAVCEN.  They said it was a Trimble issue and that Trimble would contact me (they didn't).   But that does not jive with reports of failures in Motorola, Navman, etc receivers.

I think we need to distinguish here.

The January 26 issue was due to faulty data sent by the satellites,
which caused GPS receivers to apply a wrong UTC correction which caused
the UTC time to be off by 13.7 us.

As explained by Luc Gaudin from http://naelcom.com (who obviously sell
Trimble GPS receivers) the February 13 issue was indeed just a Trimble
firmware problem. See:
https://www.febo.com/pipermail/time-nuts/2016-February/096042.html
https://www.febo.com/pipermail/time-nuts/2016-February/096050.html

Martin