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Police Radio 10-Codes. Ten-codes, also known as 10-codes or ten signals, are code words used by many police officers to aid with voice communication. The codes were originally developed in 1937 to allow for brevity, clarity, and standardization of messages transmitted over radio channels.
Whether you’re on a CB radio or another communication device, saying “What’s your 10-20?” means you’re curious about where the other person is. It’s like a virtual map to stay connected, no matter the distance.
Police 10 codes are a common form of communication for LEOs. And while some departments are beginning to favor plain English over 10 codes, it’s still an important language to learn. Here is a fully comprehensive list of the Association of Public-Safety Communications Officials (APCO) 10 codes.
Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by US public safety officials and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code.[1]
Police 10 Codes are signals police officers, law enforcement officials, and government agencies use to talk in two-way radio communications. The codes are numbers that correspond to words, phrases, and messages frequently used in law enforcement work. Also, private citizens use certain code variations in Citizen’s Band (CB) radio transmissions.
10-20: Location. 10-21: Call by phone. 10-22: Disregard. 10-23: Arrived at scene. 10-24: Emergency backup needed.
10-20 Police Code is one of many police codes used every day for the communication by the emergency forces – you can listen to 10-20 Police Code using a police code scanner. Police codes were developed during 1937–1940 and expanded in 1974 by the Association of Public-Safety Communications Officials-International (APCO).
There are numerous variations of 10 codes (abbreviations used by public safety officials to describe various conditions) used throughout the country. They can and do vary even from one county to the next.
What’s your 20? is part of a system of radio codes called 10-codes. They developed in the late 1930s when police squads began using two-way radio to communicate. One was 10-20, meaning “location.”.
The code "10-20" stood for confirming locations between units. Officers could smoothly share positional info without obviously broadcasting their next moves. 10-Code Examples Still Used Today