I've been using radar detector's since 1996 and consider myself a seasoned user, but something has been driving me nuts over the last two years. I have a Revision 5 Escort 8500 x50 that I bought 3 or 4 years ago and it has served me well. On the highway I never have a problem as cops usually use the K or Ka bands, but something is going on with the city cops where I live. Over the last year or two I notice these city cops pointing their hand held guns at me and my detector never signals any kind of alarm. I live in Denver CO and know where the cops hide on my way to work, so I watch for them as much as I rely on my detector. On at least a dozen occasions I have visually spotted mostly motorcycle policemen aiming their (what I think is) a laser gun at me and my detector remains silent. I have also noticed a few cops in their cars doing the same thing - pointing it right at me and nary a noise.
Is there some new kind of radar band that doesn't exist in my Escort? I would at least expect the laser signal to light up when something like this happens, but no such luck. Let me know what you think this is. My detector is mounted high on my windshield using a bracket and suction cups and is not obstructed in anyway.