[ntp:questions] GPS and the December 5/6 Solar Flare

David J Taylor david-taylor at blueyonder.not-this-bit.nor-this-part.co.uk
Fri Apr 6 16:36:46 UTC 2007

John Ackermann N8UR wrote:
> David J Taylor said the following on 04/06/2007 02:26 AM:
>> John Ackermann N8UR wrote:
>>>> Further to the news today that the solar flare on Dec. 5/6, 2006
>>>> caused GPS disruption, it just so happens I was logging the signal
>>>> strength (average of all satellites tracked) of an M12+T timing
>>>> receiver at that time.  For what it's worth, the attached plot
>>>> shows what I saw.  This was the only significant signal strength
>>>> anomaly in over one year of data capture.
>>>> John
>> Could you please provide a URL for the plot, John?
>> Attachments are not allowed in the text newsgroup.
> It's at http://www.febo.com/pages/gps_solar_flare .  As of now there's
> just an directory listing with the plot file, but I'll add a real
> index page with some content when I get a chance.
> John

Many thanks, John.  That's quite surprising (although I don't plot any GPS 
strength as a matter of routine so I'm not really in a position to 
comment).  I presume this affect is simply within the earth's atmosphere, 
rather than being any drop in ERP from the satellites themselves?


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