It happened early to mid evening by the look of things. Was
OK at 1300 UTC yesterday when I went out /P to check, but John was reporting
it low in freq at 2000. Ok again this morning.
The GPS constellation used to have periods when certain areas had poor
coverage, and if that were coupled with poor antenna view or
partial blockage, problems would occur. Apparantly the period
of the problem moves with sideral time, so it gets approximately
four minutes later each day.
However, these days although the constallation has to be much
the same as before, the GPS satellites Tx several dB more power and there are
more of them in orbit, albeit duplicating each other, so should be less of a
On 3 July 2013 10:54, DEHAYS Dominique <Dominique.DEHAYS@...>
Hi Andy ,
I'm interested to know at what time that signal loss
occured . I've lost
my GPSlock signal as well , Hdop up to 13! I get
this pb sometimes and I
don't know wether it is really an antenna
problem or maybe some kind of
GPS jamming? All looks normal in the
hardware so ???