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Jana Sprank, police commissioner, holds a new digital radio handset at the start of state-wide trial operation of tap-proof digital radio for the police in Waldeck, Germany, 29 November 2011. Mecklenburg-Western Pomerania
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The History of Police Communications in New York City – Part 3 -Post WWII Two-Way Radio Communications – The History of Policing in the City of New York
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