[hiredhand]

Find the input to the waveguide....and CUT IT OFF. Or, just take a pair of needle nosed pliers, and push a straight pin (or needle) such that both RF conductors are shorted, and make sure that it's not visible through the insulation....Problem solved!

This is a faily common trick now that rental car companies are tracking vehicles utilizing GPS.

Or....jam the GPS receiver on board and it won't exactly tell the "truth" about where you really are :-).

[narby]

Or....jam the GPS receiver on board and it won't exactly tell the "truth" about where you really are :-).

It's a bit expensive, but I can get you the equipment to do just that. It's a local "GPS simulator" and it can fool your GPS into thinking it's anyplace on earth. They use it for testing receivers.