Was playing with the Stalker LZ1 yesterday targeting rear shots through my windshield at receding traffic. Targeted a white Ford pickup & got good feedback chirps but no readings. First went from the tail gate but after getting no reading I lower to the license plate. Nothing. Targeted from 200 to about 2000 feet & still no reading. Went to the next vehicle & readings start to pop back up instantly again up to about 2000 ft. No doubt I was jammed. Stalker works OK through clear glass up to about 2000ft. Now the search is on. Who was this jammin' dude in my area of town?