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Wireless telegraphy or radiotelegraphy is the transmission of text messages by radio waves, analogous to electrical telegraphy using cables. [1] [2] Before about 1910, the term wireless telegraphy was also used for other experimental technologies for transmitting telegraph signals without wires.
The signals broadcast by the aeroplane carrying the Rouzet system were the only ones received unbroken. The military demanded another test, but war was on its way, and the test was not carried out. As a result, the French air squadrons had no wireless telegraph. However, the Rouzet system was used by the allied forces.
The electric telegraph was slower to develop in France due to the established optical telegraph system, but an electrical telegraph was put into use with a code compatible with the Chappe optical telegraph. The Morse system was adopted as the international standard in 1865, using a modified Morse code developed in Germany in 1848. [1] The ...
Before the discovery of electromagnetic waves and the development of radio communication, there were many wireless telegraph systems proposed and tested. [4] In April 1872 William Henry Ward received U.S. patent 126,356 for a wireless telegraphy system where he theorized that convection currents in the atmosphere could carry signals like a telegraph wire. [5]
The Wardenclyffe Power Plant prototype, intended by Nikola Tesla to be a "World Wireless" telecommunications facility.. The World Wireless System was a turn of the 20th century proposed telecommunications and electrical power delivery system designed by inventor Nikola Tesla based on his theories of using Earth and its atmosphere as electrical conductors.
Wireless Telegraphy Act is (with its variations) a stock short title used for legislation in the Republic of Ireland, South Africa and the United Kingdom relating to wireless telegraphy. The Wireless Telegraphy Acts are laws regulating radio communications in the United Kingdom .
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In 1909, the London Wireless Company of Territorials, which was attached to the Royal Engineers, experimented with spark telegraphy for the British Army. The equipment used in the war was produced by Marconi’s Wireless Telegraph Company in 1913. These sets used a 21m mast aerial and had a range of up to 250 km.