Texas DPS loves to shoot KA I/O. 90% of the time i never recieve a pulse signal. The strenght meter always shoots to 7-8 strength but never pulse. Even a point blank. Is the Stalker that fast on Instant on? Also before i get blasted with I/O Ka i always recieve a KA 1 then off then KA 9. It has saved my ass many times. I have Rev c and i love it. I picked up a Motorcycle cop on a busy Rd Ka band 2.3miles. I have seen officers in there cars aiming the antenna down on the dash then back on the road for Instant on. This could explain the brief weak signal or a radar hand held gun.