France Sent Message Via a Visual Telegraph Line

The visual telegraph line transmitted the first message across a 30-mile stretch of France, using the 22 stations of the Paris Lille line in 1793. Continue reading

Chappe Invents the Mechanical Semaphore

Two French brothers, Claude and Ignace Chappe invented the mechanical semaphore in 1791. Continue reading

Guglielmo Marconi

Guglielmo Marconi, 1st Marquis of Marconi (/mɑːrˈkoʊni/; Italian: [ɡuʎˈʎɛlmo marˈkoːni]; 25 April 1874 – 20 July 1937) was an Italian inventor and electrical engineer known for his pioneering work on long-distance radio transmission and for his development of Marconi's law and a radio telegraph system. Continue reading

Radiotelegraph message from Great Britain to Australia

In 1918 from a long-wave station in Caernarvon, Wales, operated by the Marconi Wireless Telegraph Company, sent a Radiotelegraph message from Great Britain to a second station in Australia. Continue reading