GPS unreliable NOTAMs

[Mxsmanic]

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.

--
Transpose mxsmanic and gmail to reach me by e-mail.

[BT]

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.
>
> --
> Transpose mxsmanic and gmail to reach me by e-mail.

[Bertie the Bunyip[_2_]]

Mxsmanic > wrote in
:

> Does anyone know what the "GPS IS UNRELIABLE AND MAY BE UNAVAILABLE"
> NOTAMs are all about?

Yes, I do.

Seen it plenty.

Send me 150$ and I'll tell you all about it.




Bertie