Analysis of information sources in references of the Wikipedia article "PMR446" in English language version.
Es gibt im PMR-Funk einen „Bergsteigerkanal" der sich etabliert hat (Kanal 2: Bergsteiger- und Geocachingkanal).
The band 420-450 MHz is used extensively by the military agencies for land-based, shipborne, and airborne radar systems to perform important national security functions.
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