BDA Systems and ERCES Solutions

Keep emergency communications out of the dead zone

Our ERCES solutions can help you achieve the code-required radio coverage necessary to ensure first responders get the right message at the right time.

Emergency Radio Communication Enhancement Systems (ERCES)

During an emergency, reliable communication is critical. Staying informed with clear radio transmission between first responders inside a building and emergency personnel outside the building can help prevent further injuries and save more lives. Emergency Responders lose communications when in-building radio signals are weakened by structures such as concrete, windows, and metal.

 

 

 

 

 

 

 

Is a BDA System Right For My Property?

Not all buildings require BDA systems, nor do they need them to assure the health and safety of building occupants in the event of an emergency. Florida health and safety codes mandate that all new and existing high-rise buildings must have a minimum radio signal strength for public safety communication systems.

To determine whether a BDA system is appropriate for your building, qualified fire safety and system professionals must perform a BDA inspection, also commonly referred to as a radio signal survey.

Not sure if your Fire Alarm system needs a DAS?

Request a Site Survey

A Radio Frequency (RF) Site Surveys can help determine if existing radio coverage is adequate or justify the need for a Distributed Antenna System.

 

An RF survey is typically performed by a specialized FCC GROL certified technician and some fire department radio personnel. The survey measures the Downlink/Uplink signal strengths in decibels-milliwatts (dBm) using special measuring devices.

Oftentimes, site surveys are done in the pre-construction phase. A technician will conduct the RF survey on site then integrate the readings with a software-simulated radio propagation modeling. The outcome of this process results in heat maps that will show predicted signal coverage levels throughout the planned structure. Results are then submitted to the AHJ to determine if a BDA is required or if a waiver is appropriate. (1)

Need a Site Survey? B&C Fire Safety is certified to conduct RF tests as well as design and submit required documents and plans as well as install your DAS system.

Code References

In-building ERCES in Compliance with UL 2524
The completed 2021 edition of the International Fire Code (IFC) and the first draft version of 2021 NFPA 1 both include specific requirements for these systems to be certified to UL 2524, the Standard for In-building 2-Way Emergency Radio Communication Enhancement Systems.

 

Frequently Asked Questions

What does BDA stand for?

BDA stands for Bi-Directional Amplifier. In public safety communications, a BDA is used to boost radio signals so first responders can communicate reliably inside buildings where signals may be weak or blocked.

What is a BDA system?

A BDA system is a signal amplification system that strengthens two-way radio communications for emergency responders inside a building. It works as part of an in-building public safety radio system to ensure fire, police, and EMS radios function properly in areas like stairwells, basements, parking garages, and large commercial spaces. B&C Fire Safety designs and installs BDA systems to help buildings meet local code requirements and maintain reliable emergency communications.

When is a BDA system required?

A BDA system is typically required when a building does not meet minimum public safety radio coverage standards set by local fire codes or the authority having jurisdiction (AHJ). Many jurisdictions require testing during construction or renovation, and if coverage fails, a BDA or ERCES system must be installed to bring the building into compliance.

What is a BDA used for?

A BDA is used to improve radio signal strength inside buildings so first responders can communicate during emergencies. These systems help eliminate dead zones and ensure reliable two-way communication in critical areas such as stairwells, elevator lobbies, mechanical rooms, and large interior spaces.

How much does a BDA system cost?

The cost of a BDA system depends on the size of the building, the number of coverage areas required, the type of system needed, and local code requirements. Pricing can vary widely based on design, installation complexity, and testing requirements. B&C Fire Safety can evaluate your building and provide a code-compliant solution and accurate estimate based on your specific requirements.

What is an ERCES?

An ERCES is an Emergency Responder Communication Enhancement System. It is a complete in-building radio coverage system designed to ensure reliable public safety communications throughout a structure. An ERCES may include BDAs, antennas, cabling, backup power, and monitoring equipment to meet code and performance requirements.

What is the difference between ERCES and ERRCS?

ERCES and ERRCS are terms that are often used to describe the same type of system. ERCES stands for Emergency Responder Communication Enhancement System, while ERRCS stands for Emergency Responder Radio Communication System. Both refer to in-building public safety radio coverage systems required by many fire codes to support first responder communications.