Why are radar detectors described as dual band, triband, wideband or superwideband?

Early detectors needed only to listen for X band radar. When K band arrived, dual band models able to receive both frequencies (X and K) were required. The introduction of Ka band photo radar (34.3 GHz) led to the development of triband models able to detect X, K, plus a small portion of Ka band.

A fourth category of radar receivers called wideband, with X, K and "wideband" Ka (34.2 - 35.2 GHz) detection capabilities reached the market following the introduction of Stalker radar. And finally, in response to the BEE 36A a new generation of radar detectors were developed termed superwideband, which cover all radar guns operating on X, K or "superwideband" Ka (33.2- 36.0 GHz). What frequencies are used?

Except for a few early units, X band (10.525 GHz) was the only frequency used for police radar until the mid 1970's. In 1976 radar guns using K band (24.150 GHz) were introduced; this led to the development of the first dual band (X/K) radar detectors. A proliferation of radar guns using ... more.

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