"Newps" wrote in message
...


Larry Dighera wrote:

On Fri, 15 Apr 2005 09:28:30 -0600, Newps wrote
in ::



Suppose you are navigating solely by GPS. What are you going to do in
the event the military chooses to disable the GPS system while you're
airborne

Can't be done. There is no on/off switch.


True. But the military does have the ability to jam GPS to thwart
incoming missiles. The effect for the pilot would be similar...

Not on an instantaneous basis. Some general somewhere doesn't detect an
incoming missile and then flip a switch to make GPS unreliable. It takes
days.

I'll bet somebody at SpaceCom could turn that thing of within minutes should
they be ordered to.