The fire protection authority has recently visited the managers of high-rise buildings or communal buildings more frequently. The fire brigade wants to ensure that the recently introduced digital mobile radio technology TETRA provides consistent reception within the building. As proof the authority wants to have measurements of the field strength of certified engineering offices. If the continuous wireless connection is not confirmed, the owner must provide signal amplification. The central authority for digital radio BOS (Germany) issues a guideline for the planning and realization of object supply. At country level, the guideline is made even more concrete.
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