I originally posted this in a thread but instead I'm going to make a thread out of it. Have any of you all tested this before? Today just for the heck off it I purposely turned on POP detection on my 9500ix and turned it on next to my back up Cobra. What do you know... Ka and POP interchangeably pulsed about every 5 seconds on the Escort. The interesting point is that I had it in spec mode and it registered the same frequency as actual Ka police radar although I can't remember Specifically what it was. Now I see why you all hate Cobras so much!