thatguy1234 wrote:Umm to reply to the first paragraph of what you just said DON'T MOUNT IT AS HIGH AS YOU CAN.The thing is that you will get better reaction time for some situations, but stationary police using just radar guns and or laser guns don't aim at your roof they aim at your headlights or grill or some where low on your car to make sure that the beam hits the car. Which means that sometimes your radar detector may not even pick it up. Just a word of warning or advice which ever.
I know where they point. Energy beams like light bend and refract. Look it up in physics books. For early warning you want to sniff out the "stray" waves as they bounce off of or refract around other cars and objects (over the peak of the hill, for example). If they are aimed squarely at your car, unless you have amazing brakes and reaction time, you are pretty much SOL. IIRC, most manufacturers, including Valentine, instructs owners to mount it as high as possible (obviously not behind tinting or the dotted sun screen).
Also, energy beams spread over distance, just like light from a flash light. Even laser does this only not as dramatic. Mounting the detector high, you're trying to catch the fringe of the "spotlight" to get a warning before you are in the bulls-eye, where they can get a solid reading on your speed.
FYI, they don't normally aim at the grill or headlight, the latter more likely then the former. They usually aim at your front license plate, a nice flat surface to bounce the signal back, which is why they require a front plate!