the cause of a failed Emergency Responder Radio Coverage System (ERRCS) test
Most property owners assume radios will work automatically because cell phones do. They don’t operate the same way.
Public safety radios use dedicated frequencies that must penetrate stairwells, basements, mechanical rooms, and elevator shafts.
Buildings typically fail for these reasons:
• Underground levels block signal
• Stairwells act like concrete shields
• Low-E glass reflects radio frequencies
• Metal roofing absorbs signal
• Larger floor plates exceed signal reach
• Nearby towers are too far away
