The performance of a windshield mounted radar detector depends on a several factors, aside from the features and limitations of the detector itself. The detector needs to be configured properly, installed in the right location on the windshield, and mounted at the just right angle for optimal pickup of both radar signals and laser beams. There is one more factor to consider. It is a key consideration of your entire radar defense system that is often overlooked, but is very important, because it can severely hinder performance of any radar detector, low or high end, no matter how good it may be.
It's your windshield.
If your windshield is tinted, as most are these days, it will likely affect the ability of your radar detector to detect radar or laser. Some tinted windows use polymer or ceramic films, coatings or dyes. Other tinted windows, particularly those installed in some luxury vehicles, use a tint containing metals. Radar does not penetrate metal well, and if your radar detector cannot pick it up from the other side of the glass, you won't get an alert.
In addition, since the primary purpose of window tinting is to shield against the sun and other bright light, it can also reduce the intensity of a laser beam as it penetrates the glass. This can negatively affect the ability of your detector to detect a police laser threat.
The scope of the problem depends on the type of tinting you have, of course, and the area it covers. If only the top portion of the glass is tinted, you're in luck, all you need to do is reposition the detector below the tinted area. However, if your windshield is fully tinted, beware. You may have a problem.
If you purchase a radar detector and it doesn't seem to work or perform to your expectations, check your installation before you return it or toss it in the trash. It may not be an issue with your detector at all, it could be your windows.
