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The Code of Practices for Television Broadcasters, also known as the Television Code, was a set of ethical standards adopted by the National Association of Broadcasters (NAB) of the United States for television programming from 1952 to 1983. The code was created to self-regulate the industry in hopes of avoiding a proposed government Advisory ...
ACP 131. ACP-131 [1] is the controlling publication for the listing of Q codes and Z codes. It is published and revised from time to time by the Combined Communications Electronics Board (CCEB) countries: Australia, New Zealand, Canada, United Kingdom, and United States. When the meanings of the codes contained in ACP-131 are translated into ...
Multiservice tactical brevity code. March 2023 edition cover page of the Multi-Service Brevity Codes. Multiservice tactical brevity codes are codes used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words.
Maidenhead Locator System. The Maidenhead Locator System (a.k.a. QTH Locator and IARU Locator) is a geocode system used by amateur radio operators to succinctly describe their geographic coordinates, which replaced the deprecated QRA locator, which was limited to European contacts. [1] Its purpose is to be concise, accurate, and robust in the ...
Cab Secure Radio (CSR) was an in-cab analogue radiotelephone system formerly used on parts of the British railway network. Its main function was to provide a secure speech link between the train driver and the signaller which could not be overheard by other train drivers. In areas where CSR was used, it had to be the primary method of ...
Wide FM, 20.0 kHz width, ±5 kHz deviation, still widely used for amateur radio, NOAA weather radio, marine, and aviation users and land mobile users below 50 MHz 11K2 F3E Narrow FM, 11.25 kHz bandwidth, ±2.5 kHz deviation – In the United States, all Part 90 Land Mobile Radio Service (LMRS) users operating above 50 MHz were required to ...
On the ICAO flight plan form (e.g. FAA Form 7233-4 based on the format specified by ICAO Doc 4444) one or more alphabetic codes are placed in box 10. Multiple letters are used to describe individual radio navigational capabilities and a single letter is used to designate the transponder.
Station Radio A42 – British copy of the US AN/PRC-9. Station Radio B44 – Short-range duplex AM set for artillery and anti-aircraft batteries. Station Radio B45. Station Radio B47 – VHF transceiver, 38 to 56 MHz. Station Radio B48 – VHF transceiver, 26 to 38 MHz. Station Radio C12 – Interim HF AM/CW set designed by Pye.