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Sep 3, 2024 · The Association of Police Communications Officers first proposed brevity codes, an adaptation of the U.S. Navy procedure symbols, in the June 1935 issue of The APCO Bulletin. The development of more widely used police codes, or APCO 10 Signals, began in 1937, when police radio channels were limited to reduce use of speech on the radio.
The development of the APCO Ten Signals began in 1937 [5] to reduce use of speech on the radio at a time when police radio channels were limited. Credit for inventing the codes goes to Charles "Charlie" Hopper, communications director for the Illinois State Police, District 10 in Pesotum, Illinois.
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. On old radio systems, channels were limited so messages ...
Feb 1, 2024 · How did Police 10 Codes Originate? Originally, police 10 codes were used in the United States law enforcement community before the Second World War. In 1940, the Association of Public Safety Communication Officials (APC) published the first official set of police 10 codes. These radio signals were invented to help reduce the use of speech on ...
Jun 13, 2024 · 10-83. Smoke Visible. 10-84. No Smoke Visible. 10-85. Respond Without Blue Lights/Siren. Fill out the form on this page to download a PDF of this list. This article, originally published on September 26, 2016, has been updated. 911 and Dispatch Communications Interoperability Patrol Issues Police News.
CodeMeaning10-0Use Caution10-1Signal Weak10-2Signal Good10-3Stop Transmitting10-3: Stop Transmitting. 10-4: Acknowledgement (OK) 10-10: Fight in Progress. 10-29: Check for Wanted. 10-31: Crime in Process. 10-33: Emergency. So whether it’s police communication you’re ...
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The use of police radio codes dates back to 1937 when they were introduced to bring brevity and clarity to radio communications.1 These “10-codes” are still widely used today to ensure swift ...