Installing Public Safety DAS to Ensure Code Compliance
Public Safety DAS uses Bi-Directional Amplifier technology that offers 2-way radio communication and enhances it via an antenna system. This way, first responders like the fire department and police officers can maintain communications during emergencies. The Bi-Directional Amplifier system goes inside a building, receives signals from outside, and amplifies them internally using a signal booster. It then evenly distributes those signals for maximum coverage using Distributed Antenna System (DAS). Public Safety Code Requirements:
IFC and NFPA codes are the widely used standards for public safety DAS, and most local authorities have adopted these. Therefore, it is imperative that your building and its installed public safety DAS system meets them. Let’s have a glance at these regulations: - Signal Strength: The minimum signal strength according to IFC and NFPA should be -95 dBm for proper coverage.
- Wireless Coverage: According to NFPA; 99% wireless coverage is required in areas with ‘vital importance’ designated by the local fire department. Other areas can have 90% coverage.
- Equipment Safety: All public safety DAS equipment should be encased in NEMA-4 compliant enclosures.
- Fire Ratings: There must be a 2-hour fire rating for the cables connecting public safety DAS electronic equipment.
- Battery: There must be a 24-hour battery backup available for equipment supporting the public safety radio system.
- Antenna Isolation: There should be a 15 dB or higher antenna isolation than amplifier gain
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