Sure we do.. those of us in the SW US know..
Look at "where it is".. and then think.. space based communications
channels.



"Mxsmanic" wrote in message
...
Does anyone know what the "GPS IS UNRELIABLE AND MAY BE UNAVAILABLE"
NOTAMs
are all about? Some of them have a radius of nearly 400 nm. That's an
area of
half a million square miles--almost three times the area of the State of
Texas. If it's a test of jamming equipment, it sure is conducted on a
large
scale ... large enough that it starts to negate the utility of GPS.

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