Radar Detectors – Frequently Asked Questions



Q: What does sensitivity mean?

A: In few words, sensitivity stands for the performance of a radar detector at picking up police radar signals. Sensitivity, as you may well expect, is paramount for having a timely warning before reaching the police radar and getting a fine for speeding up.


Q: What does selectivity mean?

A: Selectivity is the ability of a radar detector to differentiate between the signal transmitted by the police radars and the ones transmitted by other kinds of devices that use the same frequency. For instance, automated doors, which are a fixture for garages and department stores, and microwave ovens that happen to be close by, can determine a radar detector to go off, apparently for no reason. If your radar detector has decent to high selectivity, it will be able to ignore the non-radar signals, and therefore minimize the number of times when it would alert you without any police radars in sight.


Q: How far can a radar detector pick a police radar signal?

A: This is the kind of question that cannot have a straightforward answer. There are many factors that influence the capacity of a radar detector to pick up signal, such as terrain, weather conditions, the frequency band used and so on. On good models, expect to get alerted between half a mile and one mile from a police radar, which, as a general rule, will leave you enough time to lower your speed.


Q: Do radar detectors work all the time?

A: While Beltronics radar detectors can pick a signal from a police radar most of the times, you need to know a bit about the technologies used. For instance, if a traffic agent uses a laser powered radar gun, your radar detector cannot do anything about it. What you need to avoid getting fines this way is to use a laser jammer, but be aware that these jammers are illegal in many states.

ing a fine, with the help of a radar detector, you will increase your chances of escaping with your pockets unscathed.


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