Technical Appendix Specifications for the RADIO SYSTEM UPGRADE

I. Channels: Radios and associated control heads shall be capable of any combination of 256channels/talk groups (minimum, not including talkaround channels using a switch or button),up to 256 digital conventional systems, and sixteen digital systems (minimum).J. Channels: Radios and associated control heads shall be capable of any combination of 256analog conventional or digital conventional channels (if applicable) not including talkaroundchannels using a switch or button.Mobile Radio Features (Police)Mobile radio equipment and motorcycle radios shall be equipped with the following features:A. Mobile radio transceiver shall be remote-mounted unless specified otherwise.B. The radio shall be equipped with a control head with a 14-character dot-matrix alphanumericdisplay to allow the user to assign a descriptive name to each operating condition. Controlhead displays shall be clearly labeled and visible in bright sunlight, with variable brightness.The display shall be either backlit or vacuum florescent for night visibility.C. Multi-Control Head: Vehicles equipped with more than one control head may utilize a singleradio, which is interfaced to multiple control heads.D. Radios shall be capable of the following features (some features are described later in thissection):Priority ScanCaller ID DisplayEmergency AlarmPTT-IDE. Emergency Button: Radios shall be supplied with an emergency alert button that, whendepressed, will transmit the individual identification number of the unit in distress. Thebutton shall be protected from inadvertent activation.F. Priority Scan: Units will provide conventional priority scanning with the followingoperational requirements:1. Capable of priority scanning user-selected conventional channels. Radios shall becapable of prioritizing the selected channel, and of simultaneous scanning a mix ofup to 64 other conventional channels.2. Capable of instantaneously (in under 300 ms) locking-out up 64 active channels fromthe scan list by pressing a single switch, without deleting it from the user-definedscan list. The channel shall be "undeleted" by cycling the power, or by selecting adifferent channel.3. In priority scan mode, the display shall continue to show the selected channel (thechannel that will be transmitted upon) unless another active channel is beingreceived.G. Conventional talkaround: A button on the control head assembly shall enable the talkaroundfunction on any selected conventional repeater channel, using the receive CTCSS code as thetransmit CTCSS code. Talkaround should operate when in scan mode.City of San Luis Obispo 53 Radio System Upgrade TECHNICAL APPENDIX