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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 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 .
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 ...
Police radio systems historically used public radio frequencies, and listening to them was, for the most part, legal. Most modern police radio systems switched to encrypted radio systems in the 1990s and 2000s to prevent eavesdroppers from listening in.
The station signed on the air on June 17, 1999, as an owned-and-operated station of Ion predecessor Pax TV, and was founded by Paxson Communications.WPXJ-TV was Paxson's second effort at launching a television station in Western New York; the first was Jamestown-based WNYP-TV (channel 26), an affiliate of Canadian television network CTV, which Pax founder Lowell W. "Bud" Paxson majority owned ...
This is a list of full-service television stations in the United States having call signs which begin with the letter W. Stations licensed to transmit under low-power specifications—ex., WOCV-CD, W16DQ-D and WIFR-LD—have not been included.
This resulted in call signs that were hard for the public to differentiate, for example, as of February 1942 there were nine commercial New York City stations operating on frequencies ranging from 43.1 to 47.5, which were assigned call signs between W31NY and W75NY. [9]
MDC (Motorola Data Communications), also known as Stat-Alert, MDC-1200 and MDC-600, is a Motorola two-way radio low-speed data system using audio frequency shift keying, (AFSK).