Allright, so I have done multiple passes by the local grocery store that puts out a false K single. My test was to see if the 'g;arestrip/tintstrip" i put on my windshield affectts my radar. I mounted the detector behind it, and below it ( in the middle of the windshield ) and i have seen NO difference between the two. i have sat infront of the store ( facing it ) and have put it behind, and not behind - no difference. Today i got a mile+ detection on Ka, behind the strip. it IS 5%, but I dont really think it affects it at all.... what do you guys think???