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Originally Posted by Tallboy
My Passport9500 detects laser. I know, because it lights up with the word "Laser". Plus, when I see a couple short blips of K or KA, I know someone is watching.
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If it detects the LASER then you're already hit. Which I don't think it does. I think it's picking up RADAR and telling you that as a gimmick. Laser is a return system in that it hits and object and then reads back instantly the speed (less than 2 seconds). Which means that there's no cone for which to pick up on a detector (the beam has a width but not a cone). A user can hit a license plate and there's no way it will pick it up.
RADAR on the other hand has a cone and can be detected... but like I said, it's also too late since you've been tagged and the user already estimated your speed with + or - 3mph (1mph if they're an Instructor).
So I highly doubt that device is telling you an accurate story. But if anyone is in Colorado with these devices I'd love to test them for you. But I think you're going to be disappointed.
I welcome anyone/everyone to educate themselves. Search LIDAR vs RADAR and find some legitimate sources to read up on. Of possible interest is this one:
Article
Quote:
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The laser beam is very narrow (about 4 feet wide at 1,000 feet), which allows the lidar operator to select the target vehicle. The lidar signal only hits one vehicle, so there's little doubt which vehicle's speed the unit displays. As an operator, you can obtain a speed reading for a specific vehicle as long as you have a direct line of sight with that vehicle.
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4 feet at a 1,000 feet distance is the front bumper and therefore undetectable.