ERCES / BDA Public Safety Radio Systems

In-building public safety radio coverage systems (ERCES/BDA) designed to meet IFC requirements and pass AHJ acceptance testing — installed nationwide.

Authorized installer

We deploy industry-leading ERCES / BDA systems

Tap a manufacturer below to see what we deploy and how we engage on each platform.

  • ADRF
  • Wilson Electronics
  • Nextivity
  • Westell Public Safety DAS

Code-Compliant Public Safety Radio Coverage

Every commercial building over a certain size or occupancy type must demonstrate adequate first responder radio coverage under IFC and local AHJ requirements. When the building's construction attenuates radio signals below the required threshold, an Emergency Responder Communication Enhancement System (ERCES) — also called a BDA or public safety DAS — is required. JB Technologies is a Shield ERCES-certified installer and designs systems to pass AHJ acceptance testing the first time. Note for procurement and code documents: ERCES and ERRCS (Emergency Responder Radio Communication System) refer to the same in-building public-safety radio enhancement system. ERCES is the term used by the 2025 NFPA 1225 standard and most current model-code references; ERRCS is the legacy term still used in many AHJ contractor packets, procurement specs, and existing-building documentation. JBT works to whichever term your AHJ uses.

Donor Antenna & Signal Source

We conduct an RF survey to measure the signal level available from the nearest public safety tower, then specify the appropriate donor antenna type, placement, and mounting height to maximize captured signal before amplification.

BDA / Bi-Directional Amplifier

We specify and install UL 2524-listed bi-directional amplifiers sized for the building's frequency bands, square footage, and construction type. BDA output power is calculated to meet the required signal levels throughout the building.

Distributed Antenna System

We design the intra-building radiating infrastructure — coaxial cable, splitters, taps, and omni-directional antennas placed to achieve the required -95 dBm signal coverage in all areas, including stairwells, elevators, and below-grade spaces.

Battery Backup & Monitoring

ERCES systems require minimum 24-hour battery backup. We install appropriately sized UPS systems and configure SNMP or dedicated monitoring to alert the building's monitoring service on system fault or battery degradation.

ERCES Systems by Building Type

ERCES requirements vary by construction type, occupancy, and local AHJ. JB Technologies has designed systems for a wide range of commercial and institutional buildings nationwide.

High-Rise Office

Multi-story office buildings where structural steel, concrete, and low-e glass attenuate public safety signals below IFC thresholds.

Healthcare

Hospitals and medical campuses with large floor plates, shielded rooms, and underground parking requiring full-building coverage in all zones.

Education

Universities, K-12 campuses, and large academic buildings where concrete construction or campus layout blocks reliable radio coverage.

Warehouse & Industrial

Large-footprint warehouse and distribution center buildings where metal construction and square footage create radio coverage dead zones.

Parking Structures

Below-grade and above-grade parking structures are among the most common ERCES trigger conditions — coverage must extend to all levels.

Multifamily

High-rise and mid-rise residential buildings where construction type and floor count trigger ERCES requirements under IFC and local amendments.

ERCES System Capabilities

RF Survey & Coverage Prediction

Pre-design RF survey to measure available signal levels and predict in-building coverage before any equipment is specified.

Shield ERCES Certified Installation

JB Technologies is a Shield ERCES-certified installer — trained and authorized for Shield-platform ERCES systems.

UL 2524 Listed Equipment

We specify only UL 2524-listed BDA equipment meeting the current IFC requirements for public safety radio amplifier listings.

AHJ Coordination

We coordinate with the local fire marshal and AHJ throughout design and installation to ensure the system passes acceptance testing without costly re-work.

24-Hour Battery Backup

All ERCES systems include properly sized battery backup systems to meet the IFC 24-hour minimum standby requirement.

Annual Inspection Support

ERCES systems require annual AHJ inspection. We offer post-installation inspection support and system recertification services.

Standards We Design To

Every ERCES system is designed to meet IFC, NFPA, and local AHJ requirements for public safety radio coverage.

IFC Section 510

International Fire Code requirements for emergency responder radio coverage — the primary code standard governing ERCES system design and acceptance testing.

NFPA 1221

Standard for the Installation, Maintenance, and Use of Emergency Services Communications Systems — supplemental ERCES design and battery backup requirements.

UL 2524

Standard for In-Building 2-Way Emergency Radio Communication Enhancement Systems — the equipment listing standard for compliant BDA units.

Codes & Standards That Govern ERCES (and ERRCS)

ERCES (Emergency Responder Communication Enhancement System) — also written as ERRCS in older AHJ packets and procurement documents — is governed by a stack of overlapping federal, model-code, listing, and licensing standards. Every JBT design references the specific edition each AHJ has adopted.

NFPA 1225 (2025)

Standard for Emergency Services Communications — the 2025 consolidation of NFPA 1221, 1061, 1801, and 1802. Sets the in-building radio coverage requirements (DAQ 3.0, 95% / 90% grid pass, signal threshold) most U.S. AHJs now reference for ERCES acceptance testing.

NFPA 1221 (legacy)

Installation of Public Emergency Services Communications Systems — superseded by NFPA 1225 in 2025 but still cited verbatim in many AHJ ordinances and current contracts. JBT designs to whichever the AHJ has formally adopted.

NFPA 72

National Fire Alarm and Signaling Code. Governs fire alarm panel integration with the ERCES (annunciation, supervisory signal, antenna failure trouble) and the inspection / test cadence shared with the fire alarm system.

NFPA 1

Fire Code adopted in many states (notably Florida) as the umbrella that pulls IFC 510 and NFPA 1225 / 1221 into the local enforcement regime.

IFC 510

International Fire Code Section 510 — Emergency Responder Radio Coverage. The most commonly cited code clause for new construction in 2018, 2021, and 2024 IFC editions across the Southeast.

IBC

International Building Code — sets the construction occupancy classification that triggers ERCES under IFC 510 and the supporting structural / fire-rated pathways the BDA system requires.

UL 2524

Standard for In-Building 2-Way Emergency Radio Communication Enhancement Systems. Listed-equipment requirement for BDAs, signal source equipment, and battery backup. JBT installs only UL 2524-listed BDAs.

FCC Part 90

Land Mobile Radio Service licensing — governs the public-safety frequencies the BDA amplifies, donor-antenna isolation requirements, and the FCC-license-holder approval that must be on file before the BDA can transmit.

NICET ERCES Standard 27 51 29.17 (Sept 2024)

NICET's formal Emergency Responder Communication Enhancement System certification. Many AHJs now require a NICET-certified technician to sign the grid test report. JBT holds the certification.

State amendments & AHJ packets

Florida Building Code, NYC RCNY Ch. 35, Georgia State Minimum Fire Code, Atlanta Fire Rescue 510 Requirements, Hall County ERCES Contractor Packet, Hillsborough & Collier County ERCES guidelines — every AHJ publishes its own contractor packet that we work at design time.

Equipment Platforms We Deploy

Public-safety BDA / ERCES platforms — UL 2524-listed bi-directional amplifiers tuned to the AHJ's P25 talkgroup list:

ADRF

Public-safety BDAs (ADXV-PS V2, SDR DAS Master/Remote, ADX-V Class B), donor antennas, and NMS monitoring. Strong fit for high-rise and campus ERCES on the SLERS-2, VIPER, Palmetto 800, and TACN networks.

Westell

Apex public-safety BDA, signal source equipment, and DAS infrastructure. Common on multi-floor commercial and healthcare buildings; we deploy where AHJ acceptance practices already accept the Westell platform.

Nextivity Sentry

Nextivity's public-safety Sentry line (separate from the CEL-FI commercial cellular series). Channelized BDA design that fits smaller commercial buildings and mid-rise multifamily without the conduit footprint of a full DAS.

Commercial cellular DAS platforms — deployed alongside ERCES on shared cabling where buildings also need carrier voice/data coverage:

Nextivity CEL-FI

Commercial cellular DAS — GO G41, QUATRA enterprise series, plus the QUATRA 6000 for large-building cellular coverage. Deployed alongside ERCES on shared cabling pathways where buildings need both public-safety and carrier coverage. JBT is an Authorized Nextivity Reseller.

WilsonPro

Commercial cellular signal boosters — Pro 70 Plus, WilsonPro 1300 / 4300 / 4300R, IoT 5-Band. Carrier-agnostic (AT&T, Verizon, T-Mobile, US Cellular) for buildings where carrier coverage is the gap. Cellular only — not for public-safety / P25.

SERVICE AREAS

ERCES Coverage by State

We design and install IFC-compliant public safety DAS systems across the United States. Each state has unique AHJ requirements and a different P25 system — click your state to see local mandate details, enforcement timelines, and how we work with your fire marshal. See the full P25 Phase II hub →

Georgia IFC 510 · Atlanta HQ Virginia USBC Mandate · Jan 2024 North Carolina IFC 2021 · Jul 1, 2025 Florida FBC · NFPA 1 South Carolina IFC 2018 · Charleston FM Tennessee IFC 2018 · Nashville MFD Alabama IFC · Birmingham · Huntsville New York FDNY · RCNY Ch. 35 Nebraska IFC · Omaha · Lincoln

CITY GUIDES

ERRCS Compliance Coverage by City

City-level guides covering AHJ requirements, common building types, and how we work with local fire marshals. Each guide breaks down public-safety radio coverage rules for new construction, healthcare, high-rise, and warehouse projects in that market.

Alabama

Florida

South Carolina

State Guides

By Building Type

Request an ERCES / BDA Quote

Permit requirement, AHJ citation, or new construction — we'll survey the building and design a system that passes inspection.

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