An ERCES/BDA RF grid test is a systematic method of evaluating public-safety radio coverage throughout a building. Designated floor areas are divided into test grids, and RF measurements are taken within those areas to determine whether radio coverage meets the applicable requirements for the project.

Grid testing can identify weak-signal areas, dead zones, and other coverage deficiencies. Absolute uses professional RF test equipment, including PCTEL scanning technology, to measure and document coverage conditions. The resulting data can support project evaluation, AHJ coordination, and the determination of whether existing coverage is adequate or whether additional testing or an ERCES/BDA solution may be needed.

An RF coverage test measures public-safety radio signal performance throughout designated areas of a building. Testing commonly evaluates received signal strength (RSSI) to determine how strong the radio signal is in each test area and may also include Delivered Audio Quality (DAQ) evaluation when required by the project, public-safety radio system, or Authority Having Jurisdiction (AHJ).

These measurements help identify weak-signal areas, dead zones, and other locations where emergency responder radio coverage may not meet applicable requirements. The documented results can then be used to determine whether existing coverage is adequate or whether additional testing, system improvements, or an ERCES/BDA solution should be evaluated.

Public-safety radio coverage should be considered early in the construction process so potential coverage issues do not become a last-minute obstacle to final inspection or occupancy. The appropriate testing schedule can vary depending on the project, building construction, local requirements, and the Authority Having Jurisdiction (AHJ).

Preliminary RF testing may help identify potential coverage concerns earlier in the project and provide time to coordinate pathways, equipment locations, power, monitoring, and other ERCES/BDA requirements if a system is ultimately needed. Final RF coverage testing is typically performed when the building is sufficiently complete to provide representative in-building radio conditions and in accordance with applicable AHJ requirements.

No. The purpose of an RF signal survey or grid test is to determine whether a building has adequate public-safety radio coverage based on the applicable requirements for the project and jurisdiction.

If testing shows that required coverage is already present, an ERCES/BDA system may not be necessary. If coverage deficiencies are identified, the test results can be reviewed with the project team and Authority Having Jurisdiction (AHJ) to determine the appropriate next steps. The goal of RF testing is to document actual coverage conditions and determine whether additional evaluation or system improvements are needed—not to assume that every building requires a BDA system.

RF coverage testing requirements depend on the codes adopted by the local jurisdiction, the public-safety radio system, building conditions, and the Authority Having Jurisdiction (AHJ). Depending on the project, applicable requirements may reference NFPA 1225, the International Fire Code (IFC), locally adopted codes, and specific criteria established by the AHJ or radio system administrator.

Requirements may address items such as the applicable public-safety radio frequencies or bands, testing methodology, grid size, required coverage areas, signal strength (RSSI), Delivered Audio Quality (DAQ), critical areas, and documentation. Because these criteria can vary by jurisdiction and radio system, Absolute performs testing around the requirements applicable to the specific project.

Absolute Security, Fire & Design uses professional RF testing equipment, including PCTEL scanning technology, to evaluate in-building public-safety radio signal performance. This equipment allows us to collect detailed RF measurements across designated test areas, evaluate signal strength and coverage conditions, and identify variations in radio coverage throughout the facility.

The collected data can be used to document coverage conditions, identify weak-signal areas, dead zones, or potential deficiencies, and support project planning and coordination with the project team and Authority Having Jurisdiction (AHJ).

After testing, Absolute can provide documented RF coverage test results showing the signal conditions measured throughout the designated areas of the building. Depending on the project requirements, the findings may include identified weak-signal areas, dead zones, RSSI measurements, coverage deficiencies, and DAQ findings when required.

These results can be used to support project planning, coordination with contractors and design professionals, and review with the Authority Having Jurisdiction (AHJ). If coverage deficiencies are identified, Absolute can also help determine the appropriate next steps, including additional evaluation or development of an ERCES/BDA solution when necessary.

Yes. RF coverage testing can be performed in existing buildings to evaluate current public-safety radio coverage, investigate reported communication problems, identify weak-signal or dead-zone areas, or document coverage conditions when requested by an AHJ, building owner, or other project stakeholder.

Testing can also be performed on existing ERCES/BDA systems for troubleshooting, system evaluation, periodic or annual testing when required, and to identify areas where coverage conditions may have changed. Absolute can document the findings and help determine whether additional testing, service, system adjustments, repairs, or other corrective action should be considered.