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The APCO phonetic alphabet, a.k.a. LAPD radio alphabet, is the term for an old competing spelling alphabet to the ICAO radiotelephony alphabet, defined by the Association of Public-Safety Communications Officials-International [1] from 1941 to 1974, that is used by the Los Angeles Police Department (LAPD) and other local and state law enforcement agencies across the state of California and ...
In California, some radio codes in the 400–599 range that refer to vehicle violations are left over from the California Vehicle Code (CVC) which was revised in 1971. Some agencies, such as the California Highway Patrol (CHP) use the current vehicle code numbers while municipal and county police agencies, especially the Los Angeles Police ...
A standard message form for use by all police departments. A simple code for service dispatches relating to corrections, repetitions, etc. A standard arrangement of the context of messages, (for example, name and description of missing person might be transmitted as follows: Name, age, height, weight, physical characteristics, clothing; if car ...
Example: "BF-07967" allocates an aerial ID of "7967". These markings do not denote a vehicles callsign. [2] The South Australian Country Fire Service have an infrared beacon on the roof of most new appliances and the vehicle call sign. As all trucks are named and numbered according to their location, capacity and capability (e.g. Hynam 34 ...
The California Highway Patrol (CHP) is the principal state police agency for the U.S. state of California. The CHP has primary patrol jurisdiction over all California highways and roads and streets outside city limits, and can exercise law enforcement powers anywhere within the state. The California Highway Patrol can assist local and county ...
Standard broadcasters may use these call signs with a suffix; what is now WVBX operated as WWVB-FM from 2008 through 2009. NOAA Weather Radio stations operating between 162.4 and 162.55 MHz have call signs consisting of a "K" or "W" followed by two letters, and two digits. The "K" and "W" prefixes are used on both sides of the Mississippi River ...
The use of flashing lights and sirens is colloquially known as blues and twos, which refers to the blue lights and the two-tone siren once commonplace (although most sirens now use a range of tones). In the UK, only blue lights are used to denote emergency vehicles (although other colours may be used as sidelights, stop indicators, etc.).
Police units in the United States tend to use a tactical designator (or tactical callsign) consisting of a letter of the police radio alphabet followed by one or two numbers. For example, "Mary One" might identify the head of a city's homicide division.