BDA - ERCES Systems



Bi-Directional Amplification Systems also known as Emergency Radio Communication Enhancement Systems are code required systems for all new construction. Many questions arise that are associated to the new building code requirements.

Here are a few:
  • Does the Building Code require BDA's for Police and Fire?

    The 2016 California Fire Code 510.1 requires systems for both new and existing buildings.

  • What certifications or qualifications are required to install the ERCES?

    CFC 510.5.2

    1. A Valid FCC issued GROL (General Radio Operators License)

    2. Certification of in-building systems training issued by a nationally recognized organization, school or certificate issued by the manufacturer of the equipment being installed.

  • What are the NFPA's requirements for an annunciator at the FACP or is FACP monitoring adequate?

    The BDA system shall have it own local annunciator and the following BDA statuses shall report to the FACP:

    1. BDA Antenna Failure
    2. BDA Trouble
    3. BDA Power Loss
    4. BDA Charger Trouble
    5. BDA Low Battery

  • Does the system need to be UL Listed or California State Fire Marshal Approved?

    The AHJ for the project will specify the required listings. It is good practice as a specifier, building owner or AHJ to require that the ERCES be UL listed 2524 and California State Fire Marshal Approved on their BML listing service.
    Sierra Building Systems, Inc. is GROL Certified by the FCC and factory trained to survey for the existence of radio signals within the building, design BDA’s for proper coverage to eliminate and reduce attenuation and ensure proper isolation. SBS is certified to install and commission ERCES systems and also provide the annual and 5 year maintenance requirements.

  • How does one determine whether the existing radio coverage is adequate, of justify whether an Enhancement System is needed?

    An RF survey must be performed by an FCC Certified GROL license holder using specialized equipment that measures Downlink/Uplink signal strengths in decibel-milliwats (dBm). Results are then sent to the AHJ to determine if a BDA is required or waived.

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The BDA system offered by Sierra Building Systems, Inc. is industry proven and reliable.

Features and Benefits

BDA Diagram

  • All public safety frequency bands supported with various models available:
    • UHF
    • VHF
  • 700 MHz FirstNet
  • Dual 700 MHz FirstNet and 800MHz
  •  UL, NFPA and IFC Compliant
  • NFPA 1221 2016 Edition and IFC 2018 compliant signal boosters that do not require external DC power supplies, chargers or alarm interface feeds
  •  Integrated dual power supply system with two independent AC circuit breakers
  • Integrated Gamewell/FCI Monitor Module for Gamewell/FCI fire alarm panel connection for monitoring of the BDA
  • 24 hr Battery Backup with standard battery backup package
  • Integrated intelligent battery monitoring and diagnostics with automatic load testing
  • Additional 6 alarm relay outputs for 3rd party fire alarm monitoring
  • Includes a supervised dedicated annunciator panel with 6 status lights.

Sierra Building Systems, Inc. offers all of the components, certifications and knowledge to survey, design and implement a BDA system to meet the building code and AHJ requirements.

Why wouldn't you have your life safety partner provide you with a complete turnkey solution for your BDA system?