Originally Posted by
PurpleToolBox
I've been GPS jammed. It went on for 18 minutes. Our actual navigation performance grew to a couple of miles (I forget the actual value now). This jamming was not part of an exercise.
Probably not jamming, at least not targeted at you. GPS jamming targeted at you would render it useless. GPS signals are very weak.
It might have been RF inteference, either authorized or unauthorized. Might also have been jamming targeted at something else nearby, depending on where you were when it happened. In the US they issue NOTAMs before they do that.