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SOS was introduced for emergency maritime radio communication using Morse code. Radio (initially known as "wireless telegraphy") was developed in the late 1890s, and was quickly recognized as an important aid to maritime communication. Previously, seagoing vessels had adopted a variety of standardized visual and audio distress signals, using ...
Morse code. Morse code is a telecommunications method which encodes text characters as standardized sequences of two different signal durations, called dots and dashes, or dits and dahs. [3] [4] Morse code is named after Samuel Morse, one of the early developers of the system adopted for electrical telegraphy .
For help on Wikipedia, see and . A distress signal, also known as a distress call, is an internationally recognized means for obtaining help. Distress signals are communicated by transmitting radio signals, displaying a visually observable item or illumination, or making a sound audible from a distance. A distress signal indicates that a person ...
The post What SOS Stands For and Where It Came From appeared first on Reader's Digest. The letters SOS have been used as a code for emergency since 1905. ... Translated to Morse code, SOS looks ...
By 1908, the code we know and love took effect as the official international radio distress signal, and remained that way until 1999, when Morse code was declared all but dead.
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SOS is just that—SOS. It was derived from Morse code and recognized as an international standard signaling danger, or the need for aid. Using wireless telegraphy, it would sound like three-dits ...
Even though represented as strings of letters, prosigns are rendered without the intercharacter commas or pauses that would occur between the letters shown, if the representation were (mistakenly) sent as a sequence of letters: In printed material describing their meaning and use, prosigns are shown either as a sequence of dots and dashes for the sound of a telegraph, or by an overlined ...