X, K, and Ka band radar are simply names for different frequencies of police radar (just like different radio station names on FM radio) When your detector alerts you to one of these three radar bands, it has detected radar waves that fall within that particular band.
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16.1 Radar Frequency Bands Radar BandFrequency (GHz)Wavelength (cm)Millimeter40–1000.75–0.30Ka26.5–401.1–0.75K18–26.51.7–1.1Ku12.5–182.4–1.7Radar Systems – an overview | ScienceDirect Topics www.sciencedirect.com › topics › engineering › radar-systems
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