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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 ...
They have historically been widely used by law enforcement officers in North America, but in 2006, due to the lack of standardization, the U.S. federal government recommended they be discontinued in favor of everyday language. [2]
A police code is a brevity code, usually numerical or alphanumerical, used to transmit information between law enforcement over police radio systems in the United States. Examples of police codes include " 10 codes " (such as 10-4 for "okay" or "acknowledged"—sometimes written X4 or X-4), signals, incident codes, response codes , or other ...
A spelling alphabet is also often called a phonetic alphabet, especially by amateur radio enthusiasts, [1] recreational sailors in the US and Australia, [2] and NATO military organizations, [3] despite this usage of the term producing a naming collision with the usage of the same phrase in phonetics to mean a notation used for phonetic ...
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.
In some cases a spelling alphabet is used (also called a radio alphabet or a phonetic alphabet). Instead of the letters AB, the words Alpha Bravo are used. Main Street becomes Mike Alpha India November street, clearly separating it from Drain Street and Wayne Street. The numbers 5 and 9 are pronounced "fife" and "niner" respectively, since ...
The spelling alphabet is now also defined in other unclassified international military documents. [3] The NATO alphabet appeared in some United States Air Force Europe publications during the Cold War. A particular example was the Ramstein Air Base Telephone Directory, published between 1969 and 1973 (currently out of print).
Association of Public-Safety Communications Officials (APCO) International was founded in 1935.. APCO serves government functions that provide public safety communications services in areas of law enforcement, forestry, conservation, fire, highway maintenance, emergency rescue and medical services, emergency management, and other activities supported or endorsed by federal, state, local and ...