Technical Appendix Specifications for the RADIO SYSTEM UPGRADE

B. The Contractor shall perform a sample installation of mobile equipment on one each of thevarious types of vehicles. The sample installations shall be modified as necessary and preapprovedby the City before additional mobile equipment is installed.C. Both positive and negative high-current power cables shall be run in parallel directly to thevehicle battery to ensure a noise-free installation. The contractor may take exception to adirect battery route only if it can be shown that alternator or ignition noise would not result inreceived or transmitted signals.D. Radio should power down when vehicle ignition is off, except for police vehicles. Thus, aseparate ignition sense lead must be provided on the radio, or external connection must beequipped with power relays.E. Installation of mobile equipment shall minimize the exposure to and possibility of damagedue to abuse, vandalism, and theft. Theft-resistant fasteners and mountings shall be usedwhen necessary. Cables shall be run in hidden and protected spaces to the degree possible.F. New microphone holders in vehicles shall be located in a position convenient to the driver;exact locations shall be coordinated with the City for each type of vehicle.G. Mobile installations shall not interfere with the vehicle’s air bag systems and appropriatesolutions for installing equipment in very limited physical space shall be part of theinstallation. Installations shall not interfere with the vehicle’s instruments or controls.H. When applicable, mobile installations shall require the complete removal of existing units.I. The contractor shall note that the mobile installations may also necessitate temporary removalor relocation of other existing vehicle radios and controls such as electronic sirens, etc.J. All cables associated with the installations shall be protected by rubber grommets whenrouted through vehicle chassis perforations.Control StationsA. The contractor is fully responsible for installing the radio transceivers, including furnishingand installing cables linking the control stations with the remotes.B. The City shall approve unit placement, antenna mounting locations.C. The City shall approve all interior and exterior antenna feedline routes. All exterior antennafeedline connection points shall be sealed with weatherproofing compound.D. All exterior antenna feedline runs shall not be hung or supported by nylon or other plastictype cable ties unless UV rated.E. All exterior mounting hardware shall be stainless steel or galvanized.Antennas and Transmission LinesA. Easiax cable cutting tool, Andrews Model 222951, shall be used to terminate all cables. Forreplacement blades, use Andrews Model 222954 blade kit (5 per kit).B. Antenna transmission lines shall be labeled with cable identification tags indoors at eachconnector. Labels shall denote the antenna model, frequency, height, azimuth and VSWR atinstallation. Labels shall be permanent and not hand written.C. The manufacturers’ minimum bending radius shall not be exceeded during installation.City of San Luis Obispo 78 Radio System Upgrade TECHNICAL APPENDIX