I was approaching known stationery X, K, or Ka sources. It was in highway mode auto learning off auto mute off I did this in four places. The first 9500ix that had false laser alerts was giving alerts miles in advance on some and triple the distance on others (very pleased) with the bad unit on X, K, Ka bands. 3 of the 9500ix made 1910 have very little sensitivity most in plain sight or 300 feet away something is off.