Los Angeles; Southern California
LAPD uses "Control." But there are other terms used, e.g. ACC (Area Command Center – each LAPD station is known as a Division or Area – either name is used; example: Rampart Division or Rampart Area) and BCC (Bureau Communications Coordinator – PSR III's (or leads) for each of the four LAPD geographical bureaus - Central, South, West, and Valley - that monitors radios and calls'/cars' status in a geographic bureau, and assisting the RTOs as needed). Each Operations Bureau has five or six geographical Areas/Divisions/Stations and and a Traffic Division; each Area/Division may have several substations (in malls, parks, ect.) and Community Centers; there are 19 main geographical LAPD Divisions/Areas (e.g. Central, Rampart, West LA, Van Nuys, etc.). There are several other Bureaus, Divisions, Groups, and Sections: Operations Support Bureau, Fiscal Support Bureau, Metro Division (SWAT and K9), Organized Crime Investigations Division (OCID), Criminal Intelligence Group, Media Relations Section, Mounted Unit, etc.
The official name of the LAPD communications system with all its parts (CAD – computer aided dispatch, ROVERs, MDTs, and ACCs), is/was ECCCS (pronounced “X” – Emergency Command Control Communications System – a Divison of the Information and Communications Services Bureau). LAPD has two dispatch centers, one in Downtown Los Angeles (MCDC - “Metro Communications Dispatch Center” mainly handles Central and South Bureaus) and one in the San Fernando Valley (VCDC - “Valley Communications Dispatch Center” mainly handles the Valley and West Bureaus.” The San Fernando Valley is in the northern part of the City of LA with about 1.4 million residents, over 1/3 of the City’s population). A dispatcher for LAPD is called a PRS (Police Service Representative), formerly RTO (prior to 1981). PSRs rotate daily between three assignments: RTO - RadioTelephone Operator = Radio dispatcher; EBO - Emergency Board Operator = Call-taker (9-1-1 or 7-digit lines); and ATO - Auxiliary Telephone Operator (receive alarms, make call-backs & handle notifications and requests from officers). LAPD Communications Division employs over 600 people.
For the most part, dispatch is not identified; the units are identified – and LAPD being the “major” agency in Southern California, many agencies follow this tradition. When a unit wants to speak to Control, they just identify themselves and start talking. The same thing with Control, the PSR just identifies the unit they are contacting and starts talking.
For example:
Control: "1 Adam 12, 1 Adam 12: 211 just occurred at the 7-Eleven at 1400 South Broadway, the suspect used a .357 blued steel revolver, took approximately $200 in cash, suspect is a male white, blue pants, black jacket, last seen running southbound on Broadway, ... handle Code 3, incident 7134, RD 145, monitor the MDT for additional comments."
Unit: "1 Adam 12, Roger. En route from Temple and Main."
and
Unit: "1 Adam 12, requesting Code 7 at Central station."
Control: "1 Adam 12, OK 7."
Note: the above is fictional; 211 is the California Penal Code for robbery; Code 7 is the police code for a lunch/dinner break; Central Division is the police division 1A12 would be assigned, identified by the first number, 1 of 1A12 - sometimes the first number identifying the division is left off (e.g. "Adam 12"); 7-Eleven is a 24-hour convenience store; and South Broadway, Temple, and Main are actual streets in Los Angeles; Incident Number issued for each incident, starting with 1 at midnight; RD is the Reporting District, each area of a Division is broken down into Reporting Districts for Analytical purposes; MDT (Mobile Data Terminal) - laptop computer in the police car to communicate with Control and ACCs, to review calls and obtain further information about the call (e.g. confidential info, further suspect descriptions, other additional info), to dispo calls and unit status, and to send/dispatch non-coded calls (without a code 2 or code 3 designation - this fact means you don't hear all the LAPD calls on the radio!).
When an LAPD unit wants to talk to another LAPD unit, it is normally requested first through Control and Control assigns a TAC channel, tells the units to use simplex on a TAC channel, or relays the message, depending on what the unit requested.
For example:
Unit: "1 Adam 12, could you have 1 Adam 4 meet us on an available TAC?"
Control: "1 Adam 4, 1 Adam 4, switch to City TAC 5, ROVER channel 48, for 1 Adam 12."
Other Unit: "1 Adam 4, Roger."
Sometimes, however, a unit will say "1 Adam 12 to Control, ..."
With LAPD, the unit that is calling identifies first and then the unit they are trying to call second (opposite of air, HAM and military): "1 Adam 12 to 1 Adam 4, ..."
Each LAPD station (Area/Division) has a police desk radio assignment, too. As stated, the first number/s identifies the police division (station), the second letter/s identifies the type of unit, and the third number/s identifies the unit number. The local police station desk is where citizens go to report crimes, post bail for and pick up arrestees, or conduct other business at the local police station.
1 Adam 12 (1A12): 1 = Central Division; Adam or A = two-officer basic patrol unit; 12 = the unit number or beat assignment.
For the station desk, it would be #L90. For Central Division, it is 1L90 (they do not use a phonetic for this, just “L”). “L” identifies a one-officer unit and “90” identifies the station desk officer/s. There are also “L” car units, identifying a one-officer car unit. Besides 90 and 10, a number that ends in 0 (zero) is a supervisor (usually a Sergeant); 10 is the Watch Commander (usually a Lieutenant). For example, 9L30 and 9L120 are supervisors in Van Nuys Division; 15L10 is the North Hollywood Division Watch Commander; 19L90 is the Mission Division Desk Officer/s. Of course, as stated, each Area/Division has an ACC. So if a person walks in to a local LAPD police station and reports a crime, the L90 unit will report the info through the ACC and the dispatch will reference that the call came from L90.
Many times, an LAPD Air Unit (helicopter) will coordinate a call from the air, acting as a sort of in-field dispatch coordiator. This is usually done on a TAC and/or on simplex.
However, there are hundreds and hundreds of agencies in Los Angeles County and So Cal that all use different terms.
Some are: Dispatch; Control; Base; Communications; CDC (Central Dispatch Center); Station; Station, with a number/letter or station name; SCC (Sheriff's Communication Center - LA Sheriff's Office (LASO)); and many times the name of the city is used as the Dispatch designation, such as LA (for Los Angeles - the CHP in Los Angeles uses this - remember the TV program
CHiP’s – “LA, 15Mary3 and 4…”).
Some trivia: LAPD makes fun of LASO for its use of the term "By" on the radio. LASO routinely uses "by" at the end of a transmission or when responding to a transmission, indicating "Standing by." For example, “240 Robert, come in,” “240 Robert, By.” Who remembers the TV show
240 Robert about LASO Rescue Units? LASO makes fun of LAPD's use of the term "Roger." Also, old timers and some newer LAPD officers use the term "KMA" at the end of their transmission, especially after a crime broadcast or a running of wants and warrants (both Code 10 calls). "KMA367 is the call sign for LAPD's older VHF radios, still in use, and the officers and dispatchers used to say this call sign at the end of a transmission to identify the station before the use of automatic or digital station identifiers. It eventually got shortened to just "KMA." For a long time, a prerecorded voice used to broadcast "KJC-625" on every LAPD channel periodically, alternating between a male voice and a female voice. Now, since LAPD has gone P25 digital, the station ID is a quick Morse code burst.
Thank you Radio_Lady for your help with this post. :wink: What a super gal!
Whew, this must be the longest post I ever made.