Technical Appendix Specifications for the RADIO SYSTEM UPGRADE
Technical Appendix Specifications for the RADIO SYSTEM UPGRADE
Technical Appendix Specifications for the RADIO SYSTEM UPGRADE
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VHF Mobile Radio <strong>Technical</strong> <strong>Specifications</strong>Table 17A. – VHF Mobile Radio Transmitter <strong>Technical</strong> Specification - FireFrequency range150 -174 MHzFrequency spread (min.), no degradation24 MHzProgrammable channel steps2.5 and 7.5 kHzPower output, vehicular (EIA Intermittent)50 WSpurious and harmonic emissions-70 dBcTable 17B. – VHF Mobile Radio Receiver <strong>Technical</strong> Specification - FireFrequency range150-174 MHzFrequency spread (min.), no degradation24 MHzChannel steps2.5 and 7.5 kHzAnalog Sensitivity, 12 dB SINAD-116 dBmDigital Sensitivity, 5% BER (DAQ 3.0)-116 dBmSelectivity, EIA, @ 25 kHz bandwidth (analog) -80 dB@ 12.5 kHz bandwidth (analog) -70 dBIntermodulation immunity-80 dBSpurious and image rejection-80 dBSpeaker input power, (minimum)8 WEquipment Housing and Physical RequirementsA. The transceiver housing shall house all electronic circuits and/or circuit cards associated with<strong>the</strong> equipment.B. Microphones, external speaker housings and transceivers housings shall be constructed ofhigh impact polycarbonate plastic or o<strong>the</strong>r suitable high impact material.C. Trunk mounted transceiver housings shall be equipped with a base plate. The base plate shallallow <strong>for</strong> <strong>the</strong> removal of <strong>the</strong> transceiver from its mounted location <strong>for</strong> replacement orservicing. Removal of <strong>the</strong> transceiver from <strong>the</strong> base plate shall not expose its internalcircuitry.D. The physical operating requirements <strong>for</strong> mobile radios are:1. The radio and associated hardware shall meet specifications under ambient conditions of-30° to +60° C, and 5% to 90% relative humidity.2. The equipment shall meet or exceed all <strong>the</strong> requirements of MIL-STD 810C, D and Estandards <strong>for</strong> shock, vibration, salt, fog, dust and rain.3. Cable connectors shall be securely attached to <strong>the</strong> mobile via hermetically sealedconnectors.4. Fuses or circuit breakers installed in vehicles shall be easy to reach, labeled "<strong>RADIO</strong>",and have <strong>the</strong> proper replacement fuse amperage identified.5. One spare fuse <strong>for</strong> each mobile installation shall be provided.6. Details of mounting and installation will vary among vehicle types and shall becoordinated with <strong>the</strong> fire mechanic.City of San Luis Obispo 56 Radio System Upgrade TECHNICAL APPENDIX
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