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510.4.2.4 Signal Booster Requirements
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If used, signal boosters shall meet the following requirements:
- All signal booster components shall be contained in a National Electrical Manufacturer's Association (NEMA) 4-type waterproof cabinet.
- Battery systems used for the emergency power source shall be contained in a NEMA 3R or higher-rated cabinet.
- Equipment shall have FCC or other radio licensing authority certification and be suitable for public safety use prior to installation.
- Where a donor antenna exists, isolation shall be maintained between the donor antenna and all inside antennas to not less than 20dB greater than the system gain under all operating conditions.
- Active RF-emitting devices used for in-building, two-way emergency responder communication coverage systems shall have built-in oscillation detection and control circuitry.
- The installation of amplification systems or systems that operate on or provide the means to cause interference on any in-building, two-way emergency responder communication coverage network shall be coordinated and approved by the fire code official.
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