This from Time Nuts mailing list, reposting without permission in the hope it may help...

Yes, all satellites dropped out from 00:16:51 to 01:54:02 UTC in Dallas, Texas. Was tracking 5 sats then, poof, none. Global warming? Gravity waves? More bogus GPS control segment uploads? Somebody gots some 'splain to do...

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Sent from my iPad

On 14 Feb 2016, at 15:46, Tim Sawyer <tisawyer@gmail.com> wrote:

We had an episode of 3 Trimble GPS units showing intermittent loss of lock. The problem started at zero hours Zulu and lasted for about 2 hours. All units are located within a 20 mile radius in Orange County Califorina.

The problem cleared on it own but I'm wondering what the heck happened. Did anyone else have this problem?

Tim

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