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United States. In the United States, response codes are used to describe a mode of response for an emergency unit responding to a call. They generally vary but often have three basic tiers: Code 3: Respond to the call using lights and sirens. Code 2: Respond to the call with emergency lights, but without sirens.
A Radio code is any code that is commonly used over a telecommunication system such as Morse code, brevity codes and procedure words.
The International Code of Signals (INTERCO) is an international system of signals and codes for use by vessels to communicate important messages regarding safety of navigation and related matters. Signals can be sent by flaghoist , signal lamp ("blinker"), flag semaphore , radiotelegraphy, and radiotelephony.
Radio Free Europe/Radio Liberty (RFE/RL) is an American government-funded international media organization that broadcasts and reports news, information, and analyses to Eastern Europe, Central Asia, the Caucasus, and the Middle East, where it states that "the free flow of information is either banned by government authorities or not fully ...
UVB-76 (Russian: УВБ-76; see § Name and callsigns for other callsigns), also known by the nickname "The Buzzer", is a shortwave radio station that broadcasts on the frequency of 4,625 kHz. It broadcasts a short, monotonous buzz tone ⓘ, repeating at a rate of approximately 25 tones per minute, 24 hours per day.
It consists of a signalling protocol such as the use of abbreviated codes like the CB radio ten-code, Q codes in amateur radio and aviation, police codes, etc., and jargon. Some elements of voice procedure are understood across many applications, but significant variations exist.
In addition, distress can be signaled using automated radio signals such as a Search and Rescue Transponder (SART) which response to 9 GHz radar signal, or an Emergency Position-Indicating Radio Beacon (EPIRB) which operates in the 406 MHz radio frequency.
Prowords are one of several structured parts of radio voice procedures, including brevity codes and plain language radio checks.
Ten-codes, officially known as ten signals, are brevity codes used to represent common phrases in voice communication, particularly by law enforcement and in citizens band (CB) radio transmissions. The police version of ten-codes is officially known as the APCO Project 14 Aural Brevity 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 ...