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10-4 Say Again (Repeat) Repeat your message. 10-9 Stand By Stop transmitting and wait for further instructions. 10-12 Disregard (Recall) Cancel your present assignment. 10-22 Off Radio Unit is not capable of being contacted by radio, but may be "available." 10-7B On Radio Unit is capable of being contacted by radio, but not necessarily "available."
Multiservice tactical brevity code used by various military forces. The codes' procedure words, a type of voice procedure, are designed to convey complex information with a few words, when brevity is required but security is not; Ten-code, North American police brevity codes, including such notable ones as 10-4; Phillips Code; NOTAM Code
Radio call signs are a globally unique identifier assigned to all stations that are required to obtain a license in order to emit RF energy. The identifiers consist of from 3 to 9 letters and digits, and while the basic format of the call signs are specified by the ITU-R Radio Regulations, Article 19, Identification of stations, [5] the details are left up to each country's radio licensing ...
16-line message format, or Basic Message Format, is the standard military radiogram format (in NATO allied nations) for the manner in which a paper message form is transcribed through voice, Morse code, or TTY transmission formats. The overall structure of the message has three parts: HEADING (which can use as many as 10 of the format's 16 ...
R and S brevity codes, published by the British Post Office in 1908 for coastal wireless stations and ships, superseded in 1912 by Q codes [1] X code, used by European military services as a wireless telegraphy code in the 1930s and 1940s; Z code, also used in the early days of radiotelegraph communication.
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 ...
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Using the codes eases coordination and improves understanding during multiservice operations. The codes are intended for use by air, ground, sea, and space operations personnel at the tactical level. Code words that are followed by an asterisk (*) may differ in meaning from NATO usage. There is a key provided below to describe what personnel ...