Fire codes mandate that minimum Emergency Responder Radio Coverage (ERRC) must be sufficient in any new building. At the national level, both the International Fire Code (IFC Section 510) and the National Fire Protection Association (NFPA-72, Section 24.5) include these requirements. Many states and jurisdictions have adopted these regulations into their local ordinances.

Some of the technical requirements necessary for occupancy include:

  • Sufficient signal strength (-95 dbm)
  • Minimum coverage area (+95%)
  • Secondary power supply (24 hours)

Although the codes require adequate coverage for occupancy, they do not necessarily require a system to be installed if the outdoor macro network is sufficient.

How do you determine if a system is needed during construction?

HetNet has developed a modeling tool to determine whether coverage enhancement will be necessary before, or during, building construction. By taking the outdoor signal at the street level, we are able to propagate the anticipated expected coverage, post-construction.

If modeling shows that additional coverage is needed, HetNet can design a system to minimize the system cost and meet all the requirements of the fire codes. If the outdoor macro network signal is strong enough, the system will not be needed. An acceptance test at the end of construction will be sufficient to meet the authorities Having Jurisdiction (AHJ) requirements.


To determine your best strategy for meeting the Emergency Responder Radio Coverage, please contact us via the form below.