We can’t increase the signal strength of our radio system. The same holds true for fire and police radios. Perhaps you may have noticed that in some buildings, your cellphone does not get an adequate signal. Modern construction materials wreak havoc on radio signals. The biggest problems in radio communications today lie with the buildings themselves. In fact the Town of Chelmsford recently invested almost $2,000,000 in radio equipment to improve the quality and reliability of radio transmissions. The Chelmsford Fire Department and Chelmsford Police Department provide all members with top-notch radio equipment. So are you saying that fire department and police department radios are substandard? The solution is a network of interconnected antennas (Distributed Antenna System, or DAS) attached to a signal booster (BiDirectional Amplifier System, or BDA).Ĭontractors and building developers must present the fire prevention office with a satisfactory radio survey prior to a final inspection being scheduled Low-E glass, concrete, and steel have a huge impact on radio signals.ĭid you know that triple pane glass or low-E glass blocks almost all radio transmission in or out of a building? You may have noticed this signal degredation when you try to make that cell phone call in certain buildings.įirefighters and Police Officers have been injured or killed in the line of duty because of communication failures. The Chelmsford Fire Department requires testing and if necessary, Emergency Responder Radio Coverage in all existing buildings undergoing Level 3 Renovations.Īs construction methods and materials have evolved over the recent years, firefighters and police officers experience increased difficulty in transmitting and receiving radio signals inside a building because of the shielding properties of modern construction materials. This section mandates that in new buildings and buildings undergoing substantial (Level 3) renovations, downstream and upstream radio signals for public safety radios must meet certain thresholds for radio signal strength. The Chelmsford Fire Department enforces the Emergency Responder Radio Coverage code as found in the Massachusetts State Building Code, 780 CMR 915, 9th ed.
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