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Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by law enforcement and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code.
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 status ...
Code 10: Request to clear frequency for broadcast of wanted/warrant information Code 12: Request to clear frequency for request for information on potential individual arrest warrant Code 20: Notify media (or media already on scene)
United States. In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens.
1. False Evidence Claims. In order to gather evidence and move a case forward, police officers might claim to have damning evidence against you that they do not actually possess. This evidence can ...
APCO 's Project 14 updated the definition of Ten-codes, and also adopted the international radiotelephony spelling alphabet for use by law enforcement nationwide. [8]
It consists of a signalling protocol such as the use of abbreviated codes like the CB radio ten-code, Q codes in amateur radio and aviation, police codes, etc., and jargon. Some elements of voice procedure are understood across many applications, but significant variations exist.
The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words, when brevity is required but security is not. Ten-code, North American police brevity codes, including such notable ones as 10-4. Phillips Code. NOTAM Code. Wire signal, Morse Code abbreviation, also known as 92 Code.
For example, on September 11, persons in the New York City Police Department (NYPD) 9-1-1 center told callers from the World Trade Center to remain in place and wait for instruction from firefighters and police officers. This was the plan for managing a fire incident in the building and the 9-1-1 center staff were following the plan.
Specific brevity codes include: ACP-131; Aeronautical Code signals; ARRL Numbered Radiogram; Multiservice tactical brevity code; Ten-code; Phillips Code; NOTAM Code; Operating signals. Brevity codes that are specifically designed for use between communications operators and to support communication operations are referred to as "operating ...