12/19/1995 - Laserfiche WebLink

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BDD9 96 pArF- 822 EQUIPMENT/FEATURE COST WITH 1993.1994 OR 1995 SYSTEM DESIGN 1. Mutual Aid (State required upgrade) - Since the original system design in 1993, the State has changed the design for mutual aid channels requiring the West multi -site tower to mirror the simulcast system East towers. This adds communications equipment not originally anticipated. Compliance must be achieved for the issuance of licenses by the FCC. 2. Additional Consoles - A total of three (3) additional consoles were added: two for the Vero Beach PSAP and one for the Sebastian dispatch location. 3. Digital Interface Backbone and User Equipment - Only mobile -to -mobile and portable -to -portable digital capability was included in the original system design. The digital interface was not included in the console switch to provide for digital capability throughout the system in terms of other consoles, talk groups, logging recorders, encryption, towers, and digital user equipment. 4. Telephone interconnect - The 1993 system did not include the capability of the radio system to interconnect with existing telephone systems. This equipment receives radio signals and converts the signal into a mode to interface with telephone lines. 5. Uninterrupted Power Supply (UPS) (One system each tower) - The original system provided for a minimal UPS system for the on-site computer memory retention only. The recommended system ensures continuous and transparent operation when electrical outages occur. EQUIPMENTI_F_EATURES REQUIRED TO E%PAND SYSTEM TO 15/5 1. Increase 10 -Chancel System to a 15 -Channel System (Both North and South Sites) - The original 10/2 channel system designed in 1993 was based on approximately 1,000 users. The number of users in 1995 totals 1,565 radios which requires a 15/5 channel system which the backbone must be designed to accommodate plus some potential growth is included. This is based on the FCC loading requirements of 100 radios per channel. It should also be noted that in the original survey in 1993, all radio users within the County did not indicate a preference to join the proposed system or did not respond to the survey. Other factors include more radios for the Sheriff's Office due to additional staffing and the oversight of not including the pump panel radios on fire engines or the rear mounted radios in ambulances. 2. Fifteen Channel Not Stand-by at Hobart Tower (Back-up system) - The 1993 system did not include a stand-by system, ready at all times to come on line in the event of failure of the simulcast mode of operation, preventative maintenance, or software upgrades. Without this capability, all users of the system would be out of service until the main system came back on line. 3. Seamless 5 -Chancel West Multi -Site - The original system did not include a West tower in the system design, rather the study anticipated utilizing an existing tower. The propagation study completed by Ericsson concluded that existing towers were not positioned in a location that would provide the necessary coverage for the Fellsmere and Turnpike area. The original system also included a requirement for the radio operator, when. traveling west, to physically switch the radio to the west tower when the signal became weak from the east transmitter sites. The recommended system makes the west tower a five channel seamless system which will automatically switch the radio and it will be transparent to the radio user ensuring coverage and personal safety. 4. Additional Installation/Engineering - Costs were not included in the original system design for additional installation and engineering for the 15/5 recommended communications system. 5. IRC User Equipment Accessories - The 1993 and 1994 system estimates did not detail any user equipment accessories such as batteries, chargers, microphones, etc. The 1995 proposal includes an expense for accessories in the amount of $87,829. 52 December 19, 1995