![]() Most radar detectors listen for X, K, Ka, or laser bands before getting close to the gun itself. By measuring the difference between the original frequency and the new one, the gun can automatically determine the speed of the car. When a car passes through the gun's sights, its body bounces a portion of that signal back while changing the frequency. ![]() ![]() Ideally, this detection will happen long before a radar gun has your vehicle in its sights.Ī radar gun usually works by broadcasting a continuous, consistent signal. The main purpose of a radar detector is to actually detect the signals radar guns put out when measuring the speed of a car. Key considerations Frequency detection range Many police forces use aircraft-based or specialized speed detectors that don't rely on the radio or laser bands typical radar detectors pick up. Radar detectors have limitations when it comes to speed enforcement protection. Our list of top radar detector models will also give you a good place to start to find the right one for your needs. We've included important information, considerations, and features you should know to make the best decision. Newer detectors, however, have expanded to keep up with evolving radar gun technology, so you can find different models with greater capabilities as well.Īs you start your search for the best radar detector, check out this handy guide for help. Regular detectors can pick up the most common police gun frequencies like X and K. When buying a new radar detector, a large range of detection capabilities should be high on the priority list. Cobra makes some of the best radar detectors available. A common detector monitors the area surrounding a car, picking up the radar or laser signals guns use to bounce off of moving vehicles to determine speed. Buying guide for best cobra radar detectorsįor drivers who want to stay away from speed traps, a radar detector is a common choice to pick up the signal of a radar gun.
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