--- title: Top 5 Common Misconceptions About ERCES and BDA Systems description: Learn the truth behind the top 5 misconceptions about ERCES/BDA systems coverage, code requirements, and public safety radio amplifiers. image: https://blog.koorsen.com/hubfs/BDA_Misconception.jpg --- [![Koorsen Fire & Security](https://blog.koorsen.com/hs-fs/hubfs/KoorsenFireSecurity_April2017/Images/koorsen-logo.png?width=209&height=50&name=koorsen-logo.png "Koorsen Fire & Security")](https://www.koorsen.com/) [CONTACT US](https://www.koorsen.com/contact-us/) [BILL PAY](https://www.koorsen.com/koorsen-payments/) [1.866.311.7753](tel:8663117753) - [About Us](https://www.koorsen.com/about-us/) - [History](https://www.koorsen.com/about-us/history/) - [Case Studies](https://blog.koorsen.com/case-studies) - [Koorsen Companies](https://www.koorsen.com/about-us/companies/) - [Koorsen Training Center](https://www.koorsen.com/about-us/training-center/) - [Kasey Program](https://www.koorsen.com/about-us/kasey-program/) - [Pay Bill](https://www.koorsen.com/koorsen-payments/) - [Products + Services](https://www.koorsen.com/products-services/) - [Fire Protection](https://www.koorsen.com/products-services/fire-protection/) - [Security](https://www.koorsen.com/products-services/security/) - [Communications](https://www.koorsen.com/products-services/communications/) - [Mobile Equipment Solutions](https://www.koorsen.com/products-services/mobile-equipment-solutions/) - [Additional Products + Services](https://www.koorsen.com/products-services/#additional) - [Industries](https://www.koorsen.com/industries/) - [Healthcare](https://www.koorsen.com/industries/healthcare/) - [Industrial](https://www.koorsen.com/industries/industrial/) - [Education](https://www.koorsen.com/industries/education/) - [Restaurants](https://www.koorsen.com/industries/restaurants/) - [Property Management](https://www.koorsen.com/industries/property-management/) - [Hospitality](https://www.koorsen.com/industries/hospitality/) - [Retail](https://www.koorsen.com/industries/retail/) - [Construction](https://www.koorsen.com/industries/construction/) - [Locations](https://www.koorsen.com/locations/) - [News](https://blog.koorsen.com) - [Koorsen Blog](https://blog.koorsen.com) - [Koorsen In The News](https://www.koorsen.com/in-the-news/) - [Kasey the Dog Blog](https://blog.koorsen.com/kaseys-adventures) - [Careers](https://www.koorsen.com/about-us/careers/) # Top 5 Common Misconceptions About ERCES and BDA Systems Posted March 20, 2026 by [Koorsen Fire & Security](https://blog.koorsen.com/author/koorsen-fire-security) ![BDA_Misconception](https://blog.koorsen.com/hs-fs/hubfs/BDA_Misconception.jpg?width=1200&height=800&name=BDA_Misconception.jpg) If you’re a building owner or facilities manager, you’ve probably heard of [Emergency Responder Communication Enhancement Systems (ERCES)](https://www.koorsen.com/products-services/communications/emergency-response-communication-enhancement-systems/) or Bi-Directional Amplifiers (BDAs). These systems ensure that firefighters, police officers, and EMS personnel can maintain reliable radio communications inside your building during an emergency. Unfortunately, misconceptions abound. Some property owners confuse BDAs with consumer cell boosters, while others assume every building must install one, or that once installed, they never need attention again. Misunderstanding the facts can lead to code violations, unnecessary expenses, or even unsafe conditions during an emergency. In this post, we’ll clear up the five most common misconceptions about ERCES/BDA systems—so you can make smarter, compliance-ready decisions for your facility. [![Emergency Notification System Questions? CLICK TO CONTACT US NOW](https://no-cache.hubspot.com/cta/default/1973249/544a14da-967f-4fdc-bbb8-db83dac9982e.png)](https://cta-redirect.hubspot.com/cta/redirect/1973249/544a14da-967f-4fdc-bbb8-db83dac9982e) **Misconception #1: “BDAs are the same as cell phone boosters.”** At first glance, BDAs look similar to cellular signal boosters. Both use antennas and amplifiers to extend signal coverage. But that’s where the similarities end. Using the wrong equipment is more than ineffective—it can actually interfere with public safety networks. That’s why ERCES/BDA systems must be designed, installed, and tested by certified professionals who understand the NFPA and IFC codes and coordinate with the local [Authority Having Jurisdiction (AHJ)](https://blog.koorsen.com/what-is-an-ahj-and-why-you-need-to-know). *Bottom line:* Cell boosters help your staff make calls, but BDAs help first responders save lives. **Misconception #2: “All buildings are required to have an ERCES/BDA.”** Not every building needs an ERCES/BDA. The requirement depends on the results of an RF (radio frequency) survey performed during construction or major renovation. [Codes like NFPA 1225 and IFC Section 510](https://blog.koorsen.com/what-are-the-building-codes-and-standards-for-erces/bda-systems) don’t automatically mandate systems in every facility. Instead, they set coverage thresholds: If your building already meets these standards, you may not need an ERCES/BDA system. However, most large facilities—such as hospitals, high-rises, warehouses, and schools—often fail the RF survey because of structural materials that block radio waves. *Bottom line:* Testing comes first. Systems are only required if your building cannot meet coverage thresholds. **Misconception #3: “Once a BDA is installed, you never have to test it again.”** This is one of the most dangerous myths. ERCES/BDA systems are not “set it and forget it” solutions. Over time, changes in building layout, renovations, or even updates to public safety radio networks can affect performance. That’s why codes require: Skipping testing not only risks non-compliance—it could mean the system fails during a real emergency, leaving responders without communication inside your building. *Bottom line:* Think of ERCES/BDA like your fire alarm system. It requires regular testing and maintenance to stay reliable. **Misconception #4: “All BDAs are basically the same.”** It’s easy to assume that one BDA system is like another. In reality, BDAs must be carefully engineered for each specific building. Key factors that vary from project to project include: Using a “one-size-fits-all” approach can result in coverage gaps—or worse, interference with the very networks the system is meant to support. *Bottom line:* Every BDA system must be custom-engineered, installed, and tested for your facility and jurisdiction. **Misconception #5: “ERCES/BDA systems are just another code requirement with no real benefit.”** Some building owners see BDA systems as nothing more than a box to check for occupancy permits. But the real purpose is far more important. During emergencies, [reliable radio coverage](https://blog.koorsen.com/the-crucial-role-of-public-safety-das-in-erces/bda-systems) allows responders to: Without clear communication, responders may waste precious minutes navigating blind spots—or worse, be left unable to call for help. In life-or-death situations, those minutes matter. *Bottom line:* ERCES/BDA systems are not just about compliance—they’re about saving lives and protecting property. **Final Thoughts** Misunderstandings about ERCES and BDA systems are common, but they don’t have to derail your project or put your building at risk. The key is to separate myth from fact: At Koorsen Fire & Security, we specialize in guiding building owners through the entire ERCES/BDA process: from RF surveys and system design to installation, annual testing, and AHJ coordination. With decades of experience and a reputation for compliance excellence, [call Koorsen Fire & Security today](https://www.koorsen.com/contact-us/) to help ensure your system is both code-compliant and life-saving. [![Questions! Contact Us Now!](https://no-cache.hubspot.com/cta/default/1973249/27550866-4d2c-46fb-8ec4-ef118de52673.png)](https://cta-redirect.hubspot.com/cta/redirect/1973249/27550866-4d2c-46fb-8ec4-ef118de52673) - [Tweet](https://twitter.com/share) Topics: [Bi-Directional Amplifier](https://blog.koorsen.com/topic/bi-directional-amplifier) ## Contact Us Now! *Disclaimer: The information in this article is for informational purposes only. It is believed to be reliable, but Koorsen Fire & Security assumes no responsibility or liability for any errors or omissions in the content of this article. It does not constitute professional advice. The user of this article or the product(s) is responsible for verifying the information's accuracy from all available sources, including the product manufacturer. The authority having jurisdiction should be contacted for code interpretations.*  ### Related posts [The Art of Monitoring and Maintenance for ERCES/BDA Systems](https://blog.koorsen.com/the-art-of-monitoring-and-maintenance-for-erces/bda-systems) [How To Bridge Communication Gaps WitH ERCES/BDA Systems?](https://blog.koorsen.com/how-to-bridge-communication-gaps-with-erces/bda-systems) [The Crucial Role of Public Safety DAS in ERCES/BDA Systems](https://blog.koorsen.com/the-crucial-role-of-public-safety-das-in-erces/bda-systems) [What Are The Building Codes and Standards for ERCES/BDA Systems?](https://blog.koorsen.com/what-are-the-building-codes-and-standards-for-erces/bda-systems) [![Questions! 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