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shall be clearly noted in any construction permit application documents <br /> and written notification of the use of any such materials shall be provided <br /> to SERS at the time of permit application submittal. Signs notifying <br /> occupants, emergency services and law enforcement personnel of such <br /> shielding conditions shall be conspicuously posted both at the entrance <br /> and on the interior of such areas. <br /> 511.4. Performance. A study shall be prepared and reviewed prior to plan <br /> approval that demonstrates that the signal levels within the proposed structure <br /> meet or exceed the criteria established below. When measuring the performance <br /> of a bi-directional amplifier, signal strength measurements are based on an input <br /> signal from the SERS system adequate to obtain a maximum continuous operating <br /> output level. Multiple carrier environments shall take into account the presence of <br /> non-SERS signals in the design of the amplifier system. Adequate Radio <br /> Coverage shall include all of the following measurement requirements: <br /> 1. A minimum signal strength of-95 dBm available in 90% of the area of <br /> each floor of the building when transmitted to a belt-worn portable radio <br /> equipped with a speaker microphone, from the closest SERS site; <br /> 2. A minimum signal strength of -95 dBm received at the closest SERS <br /> site when transmitted from a belt-worn portable radio equipped with a <br /> speaker microphone from 90% of the area of each floor of the building; <br /> 3. The frequency ranges which must be supported shall be 746 - 824 MHz <br /> and 851-869 MHz; and <br /> 4. The signal strengths shall be present at a 100% reliability factor at the— <br /> 95 dBm level. <br /> 511.5. Amplification Systems <br /> 511.5.1 Buildings and structures that cannot support adequate radio <br /> coverage, as identified, shall be equipped with either a radiating cable <br /> system or an internal multiple antenna system with FCC type accepted bi- <br /> directional amplifiers as needed. <br /> 511.5.2 If any part of the installed system or systems contains an <br /> electrically powered component, the system shall be capable of operating <br /> on an independent battery system for a period of at least twelve (12) hours <br /> without external power input. The battery system shall automatically <br /> charge in the presence of an external AC power input. <br /> 511.5.3 SERS may require that bi-directional amplifiers include filters to <br /> reduce adjacent band frequency interference at least 35 dB below the <br /> 19 <br /> 1 <br />