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A police radio 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 ...
The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity Code. [ 1 ] The codes, developed during 1937–1940 and expanded in 1974 by the Association of Public-Safety Communications Officials-International (APCO), allow brevity and standardization of message traffic.
Historically “10-codes” and “signal codes” were used when radios were less reliable and frequent repetition was required. These codes were rarely uniform even between local agencies. Most used “10-4” to mean “acknowledged”, for example, but some agencies used it as “message ends”.
Code 30-Adam: Burglar alarm, location is monitored with audio by security company; Code 30-Ringer: Ringing burglar alarm; Code 30-Victor: Visual verification burglar alarm; Code 37: Vehicle is reported stolen (Code 6-Charles is given if vehicle license check produces dangerous suspect or felony want/warrant information) Code 99: Emergency (e.g ...
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The APCO phonetic alphabet, a.k.a. LAPD radio alphabet, is the term for an old competing spelling alphabet to the ICAO radiotelephony alphabet, defined by the Association of Public-Safety Communications Officials-International [1] from 1941 to 1974, that is used by the Los Angeles Police Department (LAPD) and other local and state law enforcement agencies across the state of California and ...
California law states police can only search your phone under these conditions.
This "code" is one of many innocuous sounding secret codes that. ... What 'secret' loudspeaker codes mean at department stores. Josh Smith. Updated July 14, 2016 at 6:09 PM.