[ntp:questions] Sure board not seeing sattelites.

unruh unruh at invalid.ca
Tue Feb 21 23:49:26 UTC 2012

On 2012-02-21, unruh <unruh at invalid.ca> wrote:
> I am having trouble with my Sure gps. I have the gps inside and have run
> the antenna out to the edge of the roof ( the window looked out on a
> bunch of trees, which seemed to block the gps a lot). The antenna sees
> about 1.4 of the sky which should be lots to see enough sattelites to
> get a time fix. However, I am finding that it will suddenly stop getting
> a fix for long periods of time ( almost 15 hours now). 
> Here is an output from the unit right now. 
> $GPGGA,230334.993,,,,,0,0,,,M,,M,,*4E
> $GPGSA,A,1,,,,,,,,,,,,,,,*1E
> $GPGSV,3,1,11,32,86,163,,20,62,291,,31,60,077,,01,39,224,*77
> $GPGSV,3,2,11,23,31,262,,14,19,072,,11,18,212,,30,16,136,*7D
> $GPGSV,3,3,11,25,15,041,,17,04,294,,13,03,255,*41
> $GPRMC,230334.993,V,,,,,0.00,228.53,210212,,,N*47
> which seems to say that it is seeing some of the sattelites, but not
> getting a fix at all. The blue light is not flashing. 
> I have no idea what is happening here. 
> Any suggestions?
> The antenna is on the edge of the flat roof. There are two large cedar
> trees to the east about 3m away partially blocking about 1/3 of the sky.
> If you want to see it, go to 49 15' 59.68N  123 15 06.09W. The trees The
> building extention to the west is about 2.5m high so does not block out
> that much of the sky. There seems to me to be no reason why the system
> should not be seeing enough of the sky to get enough sattelites for a
> fix. Defective unit?

And suddenly after about 18 hours of not working, it works again Here is
a working report



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