Search results
Results From The WOW.Com Content Network
A telegraph code is one of the character ... this is the Morse code used today. The Cooke and Wheatstone telegraph needle instruments were capable of using Morse code ...
A feature of the Baudot code, and subsequent telegraph codes, was that, unlike Morse code, every character has a code of the same length making it more machine friendly. [38] The Baudot code was used on the earliest ticker tape machines (Calahan, 1867), a system for mass distributing information on current price of publicly listed companies. [39]
The Phillips Code is a brevity code (shorthand) compiled and expanded in 1879 by Walter P. Phillips (then of the Associated Press) for the rapid transmission of telegraph messages, including press reports.
American Morse Code — also known as Railroad Morse—is the latter-day name for the original version of the Morse Code developed in the mid-1840s, by Samuel Morse and Alfred Vail for their electric telegraph.
Although a few abbreviations (such as SX for "dollar") are carried over from former commercial telegraph codes, almost all Morse abbreviations are not commercial codes. From 1845 until well into the second half of the 20th century, commercial telegraphic code books were used to shorten telegrams, e.g. PASCOELA = "Locals have plundered everything from the wreck."
A telegraph key, clacker, tapper or morse key is a specialized electrical switch used by a trained operator to transmit text messages in Morse code in a telegraphy system. [1] Keys are used in all forms of electrical telegraph systems, including landline (also called wire) telegraphy and radio (also called wireless) telegraphy .
Telegraph (and telex) charged per word sent, so companies which sent large volumes of telegrams developed codes to save money on tolls. Elaborate commercial codes which encoded complete phrases into single words were developed and published as codebooks of thousands of phrases and sentences with corresponding codewords.
92 Code: telegraph brevity codes; Q code: initially developed for commercial radiotelegraph communication and adopted by other radio services; QN Signals: published by the ARRL and used in Amateur radio; R and S brevity codes: published by the British Post Office in 1908 for coastal wireless stations and ships, superseded in 1912 by Q codes [1]