Technical Appendix Specifications for the RADIO SYSTEM UPGRADE

H. Radios shall be capable of conventional repeater operation or talk-around on any of thewideband or narrowband frequencies in the 150-174 MHz or 450-470 MHz land-mobilebands (as appropriate).I. Coded squelch encode and decode tones shall be channel-slaved, and the radio shall becapable of operating with encode selections that are different from the receiver decodeselections, or having a mix-mode (analog and digital) on a per-channel basis. A monitorswitch shall be provided to enable or disable the coded squelch function for maintenance.J. Radios shall be housed in rugged cases, with all points of access gasketed and sealed againstdust and directed water. No internal ventilation shall be required. Cable connectors shall besecurely attached to unit.K. Metering and alignment of all essential circuits shall be possible while the radio is installedand operating within the vehicle, and shall be accomplished through software control.L. Time-out Timer: A time-out timer shall turn off the transmitter after a time interval(adjustable up to three minutes) of continuous transmit, generate an alert tone on the radiospeaker, and reset upon release of the PTT switch.M. Primary power to the radio shall use a dedicated cable direct to the battery. Fuses or circuitbreakers shall be easy to reach; labeled "RADIO" with the proper replacement fuse amperageidentified. Spare fuses for mobile installations shall be provided.N. Radios shall not receive, or transmit, ignition noise, alternator whine or other forms ofinterference. The Contractor shall be responsible to equip radios with noise reducinghardware, and/or redesign installation wiring to eliminate interference problems if they occur.O. As the City has exclusive use of its channels, the radio should operate in coded squelch at alltimes regardless of whether the microphone is off or on the hang-up switch.P. The contractor shall provide the City with a radio master list indicating radio model number,serial number, and programming template. This list shall be provided in paper, and inMicrosoft Excel.Q. Radios and associated control heads shall meet all specifications when operating within 15%of 13.8 VDC, negative ground, and be protected against damage in the event of lead reversal.R. Radios and associated control heads shall be capable of "cloning" radio personality (withoutindividual ID numbers) to minimize future reprogramming costs.S. PTT ID: Radios shall be capable of individual identification numbers that are transmittedwith every PTT.T. Mobile radios, including the control heads, and motorcycle types (if any) shall meet MilitarySpecification 810C, 810D, and 810E for high- and low-temperature, shock, vibration, andmoisture resistance.U. Service and programming software shall operate on Windows XP Professional PC basedlaptops.V. All radio types shall be provided with an ignition sense lead that may be used in cases wherehigh-current power cables need to run directly to vehicles batteries for performance reasons.City of San Luis Obispo 51 Radio System Upgrade TECHNICAL APPENDIX