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Marconi's wireless magnetic detector (London) The magnetic detector or Marconi magnetic detector, sometimes called the "Maggie", was an early radio wave detector used in some of the first radio receivers to receive Morse code messages during the wireless telegraphy era around the turn of the 20th century.
Guglielmo Giovanni Maria Marconi [11] [12] was born in Palazzo Marescalchi in Bologna on 25 April 1874, the second son of Giuseppe Marconi (an Italian aristocratic landowner from Porretta Terme who lived in the countryside of Pontecchio) and his Irish wife Annie Jameson (daughter of Andrew Jameson of Daphne Castle in County Wexford, sister of Scottish naturalist James Sligo Jameson, and ...
By August 1895, Marconi was field testing his system but even with improvements he was only able to transmit signals up to one-half mile, a distance Oliver Lodge had predicted in 1894 as the maximum transmission distance for radio waves. Marconi raised the height of his antenna and hit upon the idea of grounding his transmitter and receiver.
Marconi's radiotelegraph was to serve both as a means of establishing communications between the various Hawaiian Islands and as a means to receive messages from the Americas (notably California and Panama) for retransmission to Japan and Asia. [56] In the early days of wireless communications, Marconi used the Hawaiian Islands as a test run.
Although development of the first radio wave communication system is attributed to Guglielmo Marconi, his was just the practical application of 80 years of scientific advancement in the field including the predictions of Michael Faraday, the theoretical work of James Clerk Maxwell, and the experimental demonstrations of Heinrich Rudolf Hertz. [1]
A model of Marconi's transmission towers at his first wireless station in Glace Bay. Marconi National Historic Site, located at Table Head in Glace Bay, is the site of Guglielmo Marconi's first transatlantic wireless station, callsign VAS, and the first wireless message sent from North America to Europe on December 15, 1902. [1]
The Marconi-RCA Bolinas Transmitting Station, on Mesa Road in Bolinas, Marin County, California, was listed on the National Register of Historic Places in 2018. [1] The station was built in 1914 by Guglielmo Marconi (1874–1937) and taken over by RCA after World War I. [2] It is one of six Point Reyes sites listed on the National Register in ...
Marconi's "Wireless Telegraph and Signal Company" was formed on 20 July 1897 after a British patent for wireless technology was granted on 2 July that year. The company opened the world's first radio factory on Hall Street in Chelmsford northeast of London in 1898 and was responsible for some of the most important advances in radio and ...