Where a BDA is the amplification engine, a DAS is the distribution network. A DAS consists of a series of antennas connected by coaxial cable or fiber to a central signal source — typically the output of a BDA. These antennas are distributed throughout the building — floor by floor, wing by wing, stairwell by stairwell — ensuring every part of the facility receives a consistent signal level. Without a DAS, an amplified BDA signal would only cover areas near the building perimeter. DAS networks are commonly installed in stadiums, convention centers, hospitals, airports, hotels, and campus environments, and are required in many jurisdictions for large commercial buildings as part of in-building compliance.
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