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right. "GPS testing" seems inconsistent with a footprint that increases in diameter as it goes up.

If they were changing something at the satellite I think you would expect the opposite.

"GPS jamming" I could believe.

On Nov 19, 2010, at 4:53 PM, John Hafen wrote:

Look at the location of the outage. The epicenter.

I wonder if setting off a nuclear weapon interferes somehow with GPS reception.

JH

On Nov 19, 2010, at 5:02 AM, Rick Titsworth wrote:

FYI, FAA has posted an advisory here that will knock out GPS coverage for a large portion of the southwestern US for a 4 hour period on 20 November.

<Released_GPS_Flight_Advisory__ACC_10-28.pdf>
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