Radar Detector Code Meanings: What Each Alert Tells You

K identifies a radar band used by some enforcement equipment, but K-band sources also include vehicle safety systems and other devices. The label identifies a frequency band, not the identity of the transmitter.

Ka is another radar-band label used by traffic radar systems. Its precise frequency range and alert presentation depend on the detector and its settings, so check the manual for the model you own.

It indicates the relative strength of the signal being received by the detector. A stronger display is not a reliable distance reading and does not by itself confirm a police radar source.

Repeated K alerts can come from non-police sources, including traffic sensors, automatic doors and some vehicle safety systems. The Uniden support guidance explains that filtering can reduce nuisance alerts but may also affect legitimate K-band warnings.

On directional models, arrows indicate the direction the detector associates with a signal. Valentine One describes its arrows as Ahead, Beside and Behind; other models may use different displays or definitions.

A laser alert reports detected laser light; it does not mean the detector has blocked or defeated a speed measurement. Follow local laws and drive within posted limits.