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San Francisco County/City

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Misc System Information

Overview of Current Systems

(courtesy of the following document: "City & County of San Francisco, Request for Information, 800 MHz Public Safety Radio Replacement Project", July 30, 2014)

"The primary public safety radio system for the City is the 800MHz Citywide Emergency Radio System (CERS). It is a mixed-mode, simulcast, 800MHz radio system, deployed at 8 radio sites throughout the City. The initial system was installed in 2000 and was a Motorola SmartZone 3.0 System, but had a major upgrade in 2009 to add a P25 Master Site Controller as well as a 700MHz Interoperability system. The system was designed to provide 95% in-building coverage throughout San Francisco... There are approximately 6700 Radios operating on the system, including portable handheld radios, mobile (in-vehicle) radios and fixed consolette radios."

"In addition to the public safety radio system, there is also a radio system dedicated to the City’s public service departments. The Public Service Emergency Radio System (PERS) is an analog 800MHz system deployed at 4 radio sites (which are a subset of the CERS radio sites). The system is simulcast, and was designed to provide 95% on-street coverage. The system was installed in 2007, and was integrated into the CERS Master Site Controller, as another simulcast cell."

SFPD Talkgroup Usage

A1 & A2: Southern and Tenderloin Stations
A3 & A4: Bayview and Mission Stations
A5 & A6: Central, Park and Northern Stations
A7 & A8: Richmond, Ingleside and Taraval Stations
A9 - A12: Spares, special events, etc
A11: Various units, incl. Traffic, Marine, etc
A13 & A14: car to station, etc. Not Dispatch monitored
A15: not used
A16: Tow Channel

Note that Central station was recently moved from A1 & A2 to A5 & A6 due to the high volume of radio traffic in the Southern and Tenderloin areas.

A Note on Multi-Selects

Multi-Select (temporary simulcast on multiple talkgroups) is constantly used on this system. SFPD dispatchers will multi-select both the mobile and portable talkgroups for their area (ex: PD-A1 and PD-A2) for BOLs and announcements, and dispatchers may also do "All Calls" by multi-selecting A1-A8 and A11. Fire dispatchers will multiselect SFFD Control A1, A2 and A3 for fire dispatches, plus EMS3 or EMS4 if city or private ambulances are dispatched as well.