[time-nuts] Dimension 4 and GPS time disagree, why?

David J Taylor david-taylor at blueyonder.co.uk
Tue Jun 12 11:09:06 UTC 2012


I run Dimension 4 as a time standard on my POC's, mainly for using
JT65 digital radio communications. It polls tick.usno.navy.mil for the
time. I have noticed since getting my ThunderBolt set up that the GPS
time is about 15 seconds in advance of my PC clock, despite a
correction via Dimension 4 immediately before checking the difference.
Why is that please? Thanks.

-- 
       Best Regards,
                   Chris Wilson.
________________________________________

Chris, you do know that GPS time and UTC are offset because of accumulated 
leap seconds?

  http://tycho.usno.navy.mil/gpstt.html

73,
David GM8ARV
-- 
SatSignal Software - Quality software written to your requirements
Web: http://www.satsignal.eu
Email: david-taylor at blueyonder.co.uk 




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