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Components of BDA Systems
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BDA
A radio frequency amplifier that boosts signals in two directions.
Dedicated Monitoring Panel
Dedicated annunciator panel is required. It is independent from the fire alarm system.
Battery Backup
Battery backup provides 24 hour emergency backup in case of power failure.
Donor Antenna
A donor antenna is connected to the BDA via coaxial cable. The antenna is typically placed on the roof of the building being serviced and pointed in the direction of the repeater site.
Distributed Antenna System (DAS)
The Distributed Antenna System is a network of spatially separated antenna nodes connected to the BDA by coaxial cable. The system is comprised of different components: fiberglass “stick” antennas, signal splitters and couplers, signal taps and RF connectors.
Coaxial Cable
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Typically Plenum Rated, ½” diameter
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Low insertion loss is required
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We now use red cable
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Some AHJs have special labeling requirements
RF Connectors
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Installed using a specialized tool
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Easily done by a trained technician
Signal Splitters and Couplers
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Used for signal distribution
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Come in different coupling values
DAS Antenna
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Fiberglass “stick” antennas have the best performance
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Other antennas, such as low-profile are available
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Various mounting options are available
