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  2. Police code - Wikipedia

    en.wikipedia.org/wiki/Police_code

    Police 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 ...

  3. Emergency service response codes - Wikipedia

    en.wikipedia.org/wiki/Emergency_service_response...

    Code 1: A time critical event with response requiring lights and siren. This usually is a known and going fire or a rescue incident. Code 2: Unused within the Country Fire Authority. Code 3: Non-urgent event, such as a previously extinguished fire or community service cases (such as animal rescue or changing of smoke alarm batteries for the ...

  4. Radio scanner - Wikipedia

    en.wikipedia.org/wiki/Radio_scanner

    A scanning radio will sequentially monitor multiple programmed channels, or scan between user defined frequency limits and user defined frequency steps. The scanner will stop on an active frequency strong enough to break the radio's squelch setting and resume scanning other frequencies when that activity ceases. [citation needed] Scanners first ...

  5. Ten-code - Wikipedia

    en.wikipedia.org/wiki/Ten-code

    Ten-code. 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]

  6. Amid protests, US police scanner apps and others saw record ...

    techcrunch.com/2020/06/01/amid-protests-u-s...

    The Police Scanner app saw the most downloads of the group, with 19,000+ on Friday, nearly 24,000 on Saturday and 35,700+ on Sunday. However, the daily active user count for the Scanner Radio ...

  7. Home Office radio - Wikipedia

    en.wikipedia.org/wiki/Home_Office_radio

    Home Office radio. Home Office radio was the VHF and UHF radio service provided by the British government to its prison service, emergency service ( police, ambulance and fire brigade) and Home Defence agencies from around 1939. The departmental name was the Home Office Directorate of Telecommunications, commonly referred to as DTELS.

  8. Owensboro police encrypting scanner traffic; could Evansville ...

    www.aol.com/owensboro-police-encrypting-scanner...

    Hamilton County, Indiana blocked the public from hearing scanner traffic last July, while Hendricks County now releases fire and police calls on a 15-minute delay. Larger cities such as Louisville ...

  9. Radio-frequency identification - Wikipedia

    en.wikipedia.org/wiki/Radio-frequency_identification

    Radio-frequency identification ( RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter. When triggered by an electromagnetic interrogation pulse from a nearby RFID reader device, the tag transmits ...

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