Dave's Public Safety Frequency Page


Office of the Sheriff, Santa Clara County

156.210 - Countywide Patrol - Frequency 1 - multiple-site simulcast repeat - analog 155.700 - West Side Patrol - Frequency 2 - multiple-site simulcast repeat - digital 156.150 - South County Patrol - Frequency 3 - multiple-site simulcast repeat - digital 154.650 - County wide tactical - Tac 4 (simplex) 154.800 - West Side tactical - Tac 5 (simplex) 155.370 - South County tactical - Tac 6 (simplex) 154.740 - County Department of Correction - Jail Transportation units - Frequency 7 154.920 - California Law Enforcement Mutual Aid Radio System (CLEMARS) 156.075 - Cal Cord (California Coordination)
In December 1998, the Sheriff began using three new, multiple-site, simulcast duplex repeat "channels," the mix of which includes existing and newly-licensed radio frequencies. The system went up in "analog" mode at first, with hopes to go into "digital" mode later. The new system was phased in starting on December 8, 1998 with a new "Control 1," followed by a new "Control 2" the next day.

Scanner listeners note: the "output" frequencies for the new "Frequency 1" and "Frequency 2" are the same as the previous "Frequency 1" and "Frequency 6." The difference is that scanner listeners can now hear all mobile and portable units on Frequency 1, as it is a multiple-site simulcast system. Subsequently Frequency 2 went "digital." Scanner listeners cannot hear anything intelligible on Frequency 2 (or Frequency 3) because the audio signals are digitally scrambled, unless you have a scanner capable of receiving APCO 25 digital signals. It is known that the Sheriff's Department is considering upgrading Frequency 1 to digital, but it is not known when that might occur.

Also heard on Sheriff's frequencies are 4A, 4K and 4U units (District Attorney's Office), Com 50 (University of California at Santa Cruz - Lick Observatory resident officer), AMTRAK Police units, and others.


Santa Clara County Department of Correction


Santa Clara County Fire Department

154.250 - County Fire
154.175 - County Fire Tactical
153.905 - County Command One
155.985 - County Command Two
154.400 - County Command Eight
154.145 - County Command Thirteen
154.205 - Saratoga Fire
153.830 - Countywide Mutual Aid Yellow
153.845 - Countywide Mutual Aid Blue
156.075 - Cal Cord

Santa Clara County Emergency Medical Services

856.4375 - Frequency 91 - Paramedic dispatch
857.4375 - Frequency 92 - Hospital ringdowns, digital status-keeping, Multiple Casualty Incidents
453.100 - Frequency 9 - E.M.T. (Emergency Medical Technician) coordination

Santa Clara County Communications - County-wide Mutual Aid coordination

33.96 - Red Net - Fire Dispatch coordination 39.92 - Law Net - Law Enforcement Dispatch coordination 482.3375 - MACS - (Santa Clara County Law Enforcement) Mutual Aid Communications System

Santa Clara County Parks and Recreation Department

151.145 - County Parks - Frequency 12 - multiple-site simulcast repeat 151.490 - County Parks Tactical (referred to as "10-3 to 9") 154.920 - California Law Enforcement Mutual Aid Radio System (CLEMARS) 156.075 - Cal Cord

Santa Clara County Roads and Airports

151.055 - County Roads and Airports - Frequency 4 - primary dispatch frequency 156.195 - County Roads and Airports Tactical (referred to as "10-3 to 6") 156.075 - Cal Cord

California Highway Patrol

42.500 - "Ruby" - San Jose units 42.540 - "Green" - Hollister/Gilroy and Santa Cruz units 154.905 - mobile radio extenders

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Created on July 12, 1996. Last updated on August 12, 2004.
David W. Schultheis, San Josť, Silicon Valley, Santa Clara County, California, USA