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Learn about police codes, numerical or alphanumerical abbreviations used by law enforcement over radio systems in the U.S. See examples of 10 codes, signals, incident codes, and other types of codes, and how they vary by state, county, and agency.
Ten-codes are abbreviated phrases used by public safety officials and CB radio enthusiasts to communicate quickly and clearly. Learn about the history, meaning and usage of ten-codes, such as 10-4 (understood), 10-33 (officer needs help) and 10-7 (out of service).
Learn the history and usage of the most widely used set of clear-code words for communicating the letters of the Roman alphabet, such as Alpha, Bravo, Charlie and Delta. The code words are also known as NATO spelling alphabet, ICAO phonetic alphabet and radiotelephony spelling alphabet.
Learn how different countries and agencies use predefined systems to describe the priority and response assigned to calls for service. Compare the codes and methods used by emergency services in the United States, the United Kingdom, and other jurisdictions.
Learn about different kinds of radio codes, such as brevity codes, operating signals, procedure words and spelling alphabets. Find out how they are used in telecommunication systems and car audio systems.
Learn about the identifiers assigned to radio and TV stations by the FCC and NTIA, and how they reflect slogans, owners, locations, and numbers. Find out which stations have the same call letters for 100 years or more, and which ones have changed many times.
Learn about the Los Angeles Police Department's organization, functions, and specialized units. Find out the list of LAPD community stations (patrol divisions), the types and features of LAPD vehicles, and the history of LAPD's paint scheme and markings.
CB slang is the distinctive language used by Citizens Band radio users, especially truck drivers in the US. Learn the meanings of common terms such as Smokey, Bear, 18/18 wheeler, and more.