Bi-directional Amplifier Systems
Also known as BDA/DAS systems, these systems provide emergency professional the communications needed to remain safe in all emergency situations in or around your facility.
ABS Fire and Security install, service, and inspect these systems. Fire alarm systems also work with these systems to alert ABS Fire and Security if there is a communication trouble with the system. ABS Fire and Security can handle all of your BDA system needs.
A BDA/DAS system not only helps your commercial property’s wireless connection, but it’s also a fire safety requirement to be up to date for emergency responder use. At ABS Fire and Security, we sell and install BDA and DAS systems in the state of South Carolina.
A BDA/DAS installation can cost anywhere from $20,000 to $250,000+. The final cost depends on many factors, including the size of the site or building, the layout of the site or building, the strength of connectivity in the area, and more. To get a free on-site estimate from a professional bi-directional amplifier installer, contact ABS Fire and Security.
Frequently Asked Questions about BDA Systems
What is a BDA System?
A Bi-Directional Amplification system (BDA) is a “reliable in-building public safety radio coverage infrastructure system used to safeguard emergency communications”. In short, a BDA is a system that helps to enhance in-building radio frequency signal coverage for public safety use. This system is primarily used to address the performance of emergency responders’ portable radios and maintain wireless communications with the first responders inside buildings and emergency personal outside the building during medical emergencies, fires, etc. Building construction, size, and construction features (such as Low-E windows) can absorb or block radio communications. With adequate levels of signal strength, efficient communications can save the lives of first responders and building occupants alike. You can read more in the detailed Bi-Directional Amplifier (BDA) Brochure.
Who is required to install/maintain a BDA system?
Emergency Radio Communication Enhancement Systems (ERCES) were first introduced in the 2009 International Building Code. Currently, AHJ’s are the determining factor on whether a system is needed for a particular building and/or if a current system is adequate. A determination will not be made until an RF survey, performed by a specialized FCC GROL license holder, is completed. Results are then submitted to the AHJ for final determination of what will be required (Full System, Partial System, and Waiver). If a building does not meet the required signal strength (-95dBm), the only effective solution is the installation of a signal booster (BDA).
Where are the requirements of the BDA System?
NFPA 1221 (2016 Edition), NFPA 72 (2013, 2010 Editions) all specify the requirements for these systems. International Fire Code (IFC – Section 510). IBC Section 916 (2015 Edition), IBC Section 915 (2012 Edition).
When are BDA systems going to be Required?
The South Carolina Fire Code (SCFC) requires all buildings to achieve adequate Emergency Responder Radio Coverage (ERRC) based on signal strength and Delivered Audio Quality (DAQ) and does not provide specific criteria based on occupancy, size, or building height. Section 510 of the 2021 SCFC requires a minimum inbound radio strength of -95dBm and DAQ of 3.0 or higher. A minimum outbound radio strength shall be provided to ensure a DAQ of 3.0 or higher. The design professional, working with a qualified vendor, is responsible for assessing the need for the system and providing the results to the local jurisdiction.
Why Are BDA Required?
Reliable radio coverage is essential for first responders during emergencies, yet 56% of fire departments have experienced communications failure during an emergency incident within the last two years. If a building has areas where emergency radio signals are not sufficient for reliable communications, a distributed antenna system (DAS) will amplify and distribute the signals to the needed areas. If a system is installed but coverage isn’t equal, the solution could be as simple as installing a distributed antenna system (DAS) to help distribute the RF signal throughout a building, stadium, hospital or other defined areas. A notable time when a system failed is during the 9/11 attacks. Clear warnings from emergency command centers were received by first responders around the buildings instructing crews to pull fire fighters out due to obvious structural damage. These warnings were sent 21 minutes before the 2nd tower fell. Even though the ground crews communicated that information through the radio system, the lack of signal strength inside the buildings contributed to hundreds of lives being lost that day.
Always Be Safe. Always Be Secure.