[time-nuts] GPS jumps of -13.7 us?

Poul-Henning Kamp phk at phk.freebsd.dk
Tue Jan 26 16:32:27 UTC 2016

In message <56A78CE9.20200 at xs4all.nl>, Paul Boven writes:

>Has anyone else seen GPS time jump by -13.7 usec today?
>I just heard from several geographically quite distributed radio 
>observatories that they have seen their GPS receiver(s) jump compared to 
>their in-house standards.

Here is a quick plot:


The two receivers see the same (number of) satelites, but the jumps
happen at widely different times.

Magnitude around 14 microseconds seems confirmed.

These are both Oncore timing receivers.

Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.

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