Napa CHP & Marin CHP are occassionally dispatched on this frequency. Due to this multicast process you may not hear the Napa/Marin patrol cars when the dispatcher is working with Napa/Marin units. 22=Solano, 21=Napa, 34=Marin, 127=Cordelia Inspection.
CHP - Solano - 42.600 MHz FM (Turquoise Channel) - FCC Callsign WNUH519
CHP - Golden Gate Division Wide - 42.340 MHz FM (Blue Channel) - FCC Callsign WPDA311
CHP - Heliports/Air-to-Air - 122.875 MHz AM
22-80 thru 22-89: 22-80 or 22-8-zero is the western most unit on Highway 80 in Solano County. The higher the callsign number (22-81, 22-84, 22-87, etc...) the farther east on Highway 80 is the patrol officer. 22-89 would be the eastern most unit on Highway 80 in Solano County.
22-7-7 is generally assigned to Highway 780 in Solano County.
22-122 is generally assigned to Highway 12 in Solano County.
21 units are assigned to Napa CHP.
34 units are assigned to Marin CHP.
127 units are assigned to the Cordelia Inspection Facility (Highway 80 scales).
CHP Chief of Golden Gate Division is “Golden Gate 1”.
CHP Solano Area Commander is “22-C”.
Commercial units enforce safe operation of commercial vehicles (ex: Commercial-245).
David (D) units are reported to be the Public Information Officers and/or desk officers and/or detail officers and/or training officers. (ex: 22D6 or 22-David-6).
ISU units are the Investigative Services Unit - stolen vehicle investigators, etc... (ex: ISU-Five-Four).
King (K) units are K-9 units (ex: Golden Gate-King-5 or King-5).
Lincoln (L) units are lieutenants (ex: 22L6 or 22-Lincoln-6).
Mary (M) units are motorcycles (ex: 22-83-Mary or 22-Mary-4).
MAIT units are the Multidisciplinary Accident Investigation Team (ex: MAIT-4).
OIC is Officer in Charge - ranking ofcr when sgt not working (ex: 22-OIC or 22-84-OIC - Note: When OIC in charge they usually use the 22-84 callsign).
Paul (P) units are special assignments like speed enforcement, patrol specific designated areas, assist ISU units, COZEEP/MAZEEP *. (ex: 22P6 or 22-Paul-6).
Robert (R) units are reported to be roving units (ex: 22-2R or 22-2-Robert).
Sam (S) units are sergeants (ex: 22S1 or 22-Sam-1).
SRT units are the Special Response Team - potential civil disturbance operations and directed response to emergencies (ex: SRT-336).
Air-31: Fixed Wing - 2016 Gippsaero GA8 TC-320 - Tail Number N153HP: Click Here
Air-37: Fixed Wing - 2015 Gippsaero GA8 TC-320 - Tail Number N137HP: Click Here
H-30: Helicopter - 2016 Airbus AS350B3 A-Star - Tail Number N981HP: Click Here
H-32: Helicopter - 2016 Airbus AS350B3 A-Star - Tail Number N982HP: Click Here
Days units are day shift patrol - 6:00am to 2:00pm. A shift designator is sometimes added to the day shift callsign as in “22-84 Days”.
Swings or Boy units are swing shift patrol - 2:00pm to 10:00pm. A shift designator is sometimes added to swing shift callsign as in “22-88 Swings” or “22-88 Boy”.
Graves or Charles units are night shift (graveyard) patrol - 10:00pm to 6:00am. A shift designator is sometimes added to night shift callsign as in “22-86 Graves” or “22-86 Charles”.
Channel 2 is 42.600 simplex for car to car radio traffic. Ch 2 does not use a repeater. When Ch 2 is used the listener will only hear this radio traffic when units are close to this scanner receiver.
Night shifts may not have as many patrol vehicles on the road as day shift so the night shift beat could be larger then the day shift beat, etc...
Patrol units are responsible for traffic issues in the unincorporated areas of Solano County as well as the highways.
( * notation = COZEEP units are Construction Zone Enhanced Enforcement Program for stationary zones. MAZEEP units are Maintenance Zone Enhanced Enforcement Program for moving zones. Callsigns vary for these units (ex. 22-Paul-??, 22-COZEEP-1 or COZEEP-1). COZEEP/MAZEEP Pocket Guide: Click Here)