Bi-Directional Amplifiers (BDAs)

Enhance Emergency Communications and Ensure Code Compliance

IES proudly offers a full range of Bi-Directional Amplifiers (BDAs) from trusted manufacturers like Radio Solutions Inc. (RSI) and Honeywell Fiplex. These emergency communication systems are designed to significantly improve in-building radio signal coverage for public safety and first responders.

Why Your Building May Need a BDA System

Modern building materials such as concrete, metal, and low-E glass can weaken or block emergency radio signals. As a result, emergency personnel may experience dangerous communication failures inside your facility during critical incidents.

If your building fails to meet the minimum required signal strength (-95 dBm), the only effective solution is the installation of a code-compliant signal booster (BDA).

Code Compliance & Approvals

The need for reliable in-building emergency communications was first addressed in the 2009 International Building Code (IBC).

Today’s codes and standards include:

  • IBC Section 916 (2018)

  • IFC Section 510 (2018)

  • NFPA 72 (2016)

  • NFPA 1221 (2016)

  • UL 2524

These require all commercial buildings to provide adequate radio coverage for emergency responders. Compliance is based on the existing public safety radio signal strength measured outside the building by the Authority Having Jurisdiction (AHJ).

Don’t Let Your Building Be a Communication Dead Zone

Structures such as high-rises, hospitals, underground facilities, and buildings with energy--efficient windows often fail to meet code. Yet, many developers and design professionals overlook these requirements during planning and permitting

If Emergency Responder Communication Enhancement Systems (ERCES) are not addressed during the submittal process, fire officials are required to alert design teams and building officials. Non-compliance may delay occupancy or result in costly retrofits.

How Do You Know if a BDA System is Needed?

A certified FCC GROL technician or qualified fire department radio personnel can perform an RF Site Survey to measure signal strength (uplink/downlink) in dBm throughout your building. Survey results are submitted to the AHJ, who will determine if:

  • A BDA system is required

  • A Waiver may be granted

Get Compliant. Stay Safe. Protect Lives.

IES offers turnkey BDA system solutions—design, installation, and certification—ensuring your building meets all public safety communication requirements.

Red industrial fire-resistant electrical control panels and boxes.
An orange emergency radio system cabinet labeled 'Public Safety Radio' and 'Emergency Radio System' with blue and yellow text, featuring black latches and electrical connections.

Contact us today to schedule a signal survey or get a free consultation.

Let’s make sure your building is ready when seconds count.