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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. Alaska State Troopers - Wikipedia

    en.wikipedia.org/wiki/Alaska_State_Troopers

    5. Website. https://dps.alaska.gov/AST/Home. The Alaska State Troopers, officially the Division of Alaska State Troopers ( AST ), is the state police agency of the U.S. state of Alaska. It is a division of the Alaska Department of Public Safety (DPS). The AST is a full-service law enforcement agency that handles both traffic and criminal law ...

  4. Anchorage Police Department - Wikipedia

    en.wikipedia.org/wiki/Anchorage_Police_Department

    The Anchorage Police Department (APD) is the police department of the Municipality of Anchorage in Alaska.Functioning as a service area of the Municipality, its patrol area includes the core "Anchorage bowl", the Seward Highway corridor from Potter Creek south to McHugh Creek, and the Glenn Highway corridor north of the Anchorage bowl to the municipality's border with the Matanuska-Susitna ...

  5. 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 ...

  6. Radio scanner - Wikipedia

    en.wikipedia.org/wiki/Radio_scanner

    A scanner (also referred to as a radio scanner) is a radio receiver that can automatically tune, or scan, two or more discrete frequencies, stopping when it finds a signal on one of them and then continuing to scan other frequencies when the initial transmission ceases. The term scanner generally refers to a communications receiver that is ...

  7. Trunked radio system - Wikipedia

    en.wikipedia.org/wiki/Trunked_radio_system

    A trunked radio system is a two-way radio system that uses a control channel to automatically assign frequency channels to groups of user radios. In a traditional half-duplex land mobile radio system a group of users (a talkgroup) with mobile and portable two-way radios communicate over a single shared radio channel, with one user at a time ...

  8. High-frequency Active Auroral Research Program - Wikipedia

    en.wikipedia.org/wiki/High-frequency_Active...

    The High-frequency Active Auroral Research Program ( HAARP) is a University of Alaska Fairbanks program which researches the ionosphere – the highest, ionized part of Earth's atmosphere . The most prominent instrument at HAARP is the Ionospheric Research Instrument (IRI), a high-power radio frequency transmitter facility operating in the high ...

  9. Johnson County police to encrypt radio scanners, sparking ...

    www.aol.com/johnson-county-police-encrypt-radio...

    January 11, 2024 at 6:02 AM. “Beginning on January 23, 2024, the following Johnson County police agencies will begin full encryption of their radio communications.”. So began a media release ...