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16-line message format, or Basic Message Format, is the standard military radiogram format (in NATO allied nations) for the manner in which a paper message form is transcribed through voice, Morse code, or TTY transmission formats. The overall structure of the message has three parts: HEADING (which can use as many as 10 of the format's 16 ...
A radiogram is a formal written message transmitted by radio. Also known as a radio telegram or radio telegraphic message, radiograms use a standardized message format, form and radiotelephone and/or radiotelegraph transmission procedures. These procedures typically provide a means of transmitting the content of the messages without including ...
a Wright Brothers telegraph key (missing its knob) A Morse Key from G. Hasler, Bern (1900) first used by Gotthard Railway 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]
The word telegraph (from Ancient Greek: τῆλε 'at a distance' and γράφειν 'to write') was coined by the French inventor of the semaphore telegraph, Claude Chappe, who also coined the word semaphore. [2] A telegraph is a device for transmitting and receiving messages over long distances, i.e., for telegraphy.
The syphon or siphon recorder is an obsolete electromechanical device used as a receiver for submarine telegraph cables invented by William Thomson, 1st Baron Kelvin in 1867. [1] It automatically records an incoming telegraph message as a wiggling ink line on a roll of paper tape. [2]
Coe, Lewis, The Telegraph: A History of Morse's Invention and Its Predecessors in the United States, McFarland, 2003 ISBN 0-7864-1808-7. Lyall, Francis, International Communications: The International Telecommunication Union and the Universal Postal Union, Routledge, 2016 ISBN 1-317-114345. Pope, Frank L. (1881). "Chapter VIII Hints to Learners".
Telegraph Sounder. A telegraph sounder is an antique electromechanical device used as a receiver on electrical telegraph lines during the 19th century. It was invented by Alfred Vail after 1850 to replace the previous receiving device, the cumbersome Morse register [1] and was the first practical application of the electromagnet.
Station 50 in Cologne-Flittard. The Prussian semaphore system was a telegraphic communications system used between Berlin and the Rhine Province from 1832 to 1849. [1] It could transmit administrative and military messages by optical signal over a distance of nearly 550 kilometres (340 mi).