Reliable Two-Way Emergency Radio Communication over BDA


emergency responder and 2 way radioEmergency Responders lose communication when radio signals in-building are weakened by structures such as concrete, windows, and metal. Staying informed with clear radio transmissions between first responders inside of a building and emergency personnel outside of the building can help prevent injuries and save lives.

bi-directional amplifier mounted to wallNOTIFIER’s Bi-Directional Amplifier (BDA) System is a signal boosting solution designed to enhance in-building radio frequency (RF) signal coverage for public safety radio. When combined with industry leading fire systems, NOTIFIER provides the reliability and quality expected from a life safety solution.

Reliable Performance

Specifically designed to meet UL2524 In-building 2-Way Emergency Radio Communication Enhancement Systems, NOTIFIER’s Class B, Bi-Directional Amplifier Solutions provide a high power, band-selective radio signal booster system that can be designed and customized to meet all public safety frequency band ranges. This state of the art BDA System is developed to provide a high rejection of interfering signals, and is designed for excellent heat dissipation, corrosion resistance and ease of wall-mounting.

Features and Benefits

  • UL2524 for In-building 2-Way Emergency Radio Communication Enhancement Systems listing, CSFM listing
  • NFPA72 2010 Edition, NFPA 1221 2016 Edition and IFC 2018 compliant
  • Supports all US public safety frequency bands
  • Directly integrates with NOTIFIER Fire Alarm Control Panel
  • Single BDA to cover multiple sub-bands with a wider bandpass
  • Automatic and self adjusting oscillation prevention and uplink squelch support
  • Lower power consumption for long term reliability and efficiency
comm-dead-zone-diagram

The Challenge: A Weak Radio Signal

The performance of emergency responders and public safety radio systems can be affected by building construction, building size, construction features and other elements that absorb or block radio communication. Signal strength can be negatively impacted by:

  • Concrete or metal construction
  • Large buildings
  • Underground structures
  • Low-E glass windows

An RF survey is conducted to determine if a building requires a BDA system. This survey, typically conducted by a specialized FCC GROL certified technician and some fire department radio personnel, measures the current buildings Downlink/Uplink signal strengths in decibels-milliwatts (dBm). Survey results are submitted to the Authority Having Jurisdiction – who will determine if a BDA solution is required.

The Solution: A Strong Notifier BDA System

Tested and evaluated in accordance with UL 2524 1st Edition requirements for In-building 2-Way Emergency Radio Communication Enhancement Systems, NOTIFIER’s BDA solution enhances two-way radio signal strength inside buildings, tunnels and other structures. The design delivers reliable performance to meet signal strength requirements, even in the most challenging RF environments.

NOTIFIER Class B, Bi-Directional Amplifier Solutions are a high power, band-selective radio signal booster system that can be designed and customized to meet all public safety frequency band ranges. NOTIFIER’s state of the art BDA System is developed to provide a high rejection of interfering signals, convenient quick-disconnect terminals and built-in End Of Line (EOL) resistors for alarm connections, that allow for easy troubleshooting and channel expansion. At the same time, the signal booster is designed for excellent heat dissipation, corrosion resistance and ease of wall-mounting.

NFPA Coverage Requirement

Critical Area Coverage – 99% (NFPA 1221 9.6.7.4) coverage required in Critical areas:

  • Emergency Command Center(s)
  • Fire Pump Room(s)
  • Exit Stairs
  • Exit Passageways
  • Elevator Lobbies
  • Standpipe Cabinets
  • Sprinkler Sectional
  • Valve Locations

General Area Coverage – General building areas should have (90% NFPA 1221 9.6.7.5) and (95% “all floors of the building,” IFC 510.5.3, DRAFT 2018 edition) coverage

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