Richard Hertz wrote:

No, but I am sure you will enlighten us.

Well, I will, in any case. Jamming a signal blocks it in such a way that it is
pretty much useless. Jam the GPS signals, and your receiver can't tell where it
is. Spoofing signals causes the receiver to report an incorrect location while
"thinking" that everything's working correctly.

George Patterson
A diplomat is a person who can tell you to go to hell in such a way that
you look forward to the trip.