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Cover of The Railroad Telegrapher, monthly magazine of the Order of Railroad Telegraphers, for March 1902.. The Order of Railroad Telegraphers (ORT) was a United States labor union established in the late nineteenth century to promote the interests of telegraph operators working for the railroads.
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 .
In 1878, Jesse created his own company, J. H. Bunnell and Co. Jesse constantly developed telegraphic instruments. In 1868 he received a patent for telegraph repeater, [4] printing telegraph, [5] created different telegraph sounders [6] and improved telegraph switchboard. [2] [7] He is famous for his steel lever key, which was patented on 15 ...
Great Western Railway telegraphic codes were a commercial telegraph code used to shorten the telegraphic messages sent between the stations and offices of the railway. The codes listed below are taken from the 1939 edition of the Telegraph Message Code book [ 1 ] unless stated otherwise.
By 1846, telegraph lines extended along the entire eastern seaboard and were rapidly being built westward into the interior of the country. Early uses of the telegraph included sending press reports, commodities prices, and business transactions. As time went on, the telegraph was increasingly used by the general public for sending personal ...
An example of a very simple keyer is a single telegraph key, which used for sending Morse code. In such a use, the term "to key" typically means to turn on and off a carrier wave. For example, it is said that one "keys the transmitter" by connecting some low-power stage of the amplifier in a transmitter to its follow-on stage, through the ...
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Gradually the telegraph was supplanted by the telephone as the preferred method of communication. By the 1970s, this function was carried out primarily by two-way radio . [ 3 ] With the advent of radio communications, timetable and train order operation began to fall out of favor as DTC and CTC became more common on major carriers.