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A radar beacon (racon) is a device that returns a distinctive signal when triggered by a radar, providing range, bearing and identification information. Learn about the principle of operation, the characteristics, the applications and the proposal for enhanced RACON.
10-4 is a police code for "okay" or "acknowledged" in the United States. Learn about the origin, types, and examples of police codes, such as California's Hundred Code and 10-codes.
Ten-codes are abbreviated phrases used by public safety officials and CB radio enthusiasts to communicate quickly and clearly. Learn about the history, meaning and usage of ten-codes, such as 10-4 (understood), 10-33 (officer needs help) and 10-7 (out of service).
In the debut episode of “Distractible,” the guys discuss all things hair-related — including talking about the dangers of hair removal and imagining a sci-fi world in which an elite class ...
Learn the meaning and usage of various emoticons or textual portrayals of a writer's moods or facial expressions. Find out the differences between Western, Eastern and 2channel style emoticons, and how to type them on your keyboard.
Learn the history and usage of the most widely used set of clear-code words for communicating the letters of the Roman alphabet, such as Alpha, Bravo, Charlie and Delta. The code words are also known as NATO spelling alphabet, ICAO phonetic alphabet and radiotelephony spelling alphabet.
Bead Window is a code word used by various military forces to indicate the last transmission potentially disclosed unauthorized information. It is one of the American standardized brevity code words for multiservice operations and does not include words unique to single service operations.
Learn about the telephone number prefixes for reaching foreign countries or areas via international telecommunication networks. Find out the country code for Niger (227) and other countries in different world zones.