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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 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.
Brevity codes are used in various communications to convey complex information with a few words or codes. Learn about different types of brevity codes, such as military, amateur radio, maritime, aviation and police codes.
R-S-T system is a code for assessing the quality of a radio signal received by amateur radio operators and other radio hobbyists. It consists of three digits for readability, strength, and tone, with optional suffixes for special conditions.
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.
Procedure words are words or phrases used to facilitate radio communication by conveying information in a standard format. Copy means that the information has been received satisfactorily, while roger means that the information has been received and understood.
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 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.