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[1] [2] Developed in 1902 by radio pioneer Guglielmo Marconi [1] [2] [3] from a method invented in 1895 by New Zealand physicist Ernest Rutherford, [4] it was used in Marconi wireless stations until around 1912, when it was superseded by vacuum tubes. [5] It was widely used on ships because of its reliability and insensitivity to vibration.
The Marconi Wireless Telegraph Company of America (commonly called American Marconi) was incorporated in 1899. It was established as a subsidiary of the British Marconi Company and held the U.S. and Cuban rights to Guglielmo Marconi's radio (then called "wireless telegraphy") patents. American Marconi initially primarily operated high-powered ...
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 ...
The complete specification was filed 2 March 1897. This was Marconi's initial patent for the radio, though it used various earlier techniques of various other experimenters and resembled the instrument demonstrated by others (including Popov). During this time spark-gap wireless telegraphy was widely researched.
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]
His company, the Marconi Wireless Telegraph Co, started in 1897, dominated the early radio industry. During the first two decades of the 20th century the Marconi Co. built the first radiotelegraphy communication stations, which were used to communicate with ships at sea and exchange commercial telegram traffic with other countries using Morse ...
Marconi's experiments demonstrated the feasibility of a wireless telegraphy network across a desert terrain lacking in infrastructure, as was the case in places such as Libya. During the following months the WT detachment would set up a network that was controlled from a 1.5 kW spark transmitter on the quayside of the Turkish fort at Tripoli.
In 1903, Marconi founded the Marconi's Wireless Telegraph Company of Canada which was renamed as the Canadian Marconi Company in 1925. The radio business of the Canadian Marconi Company is known as Ultra Electronics TCS since 2002 and its avionic activities as CMC Electronics, owned by Esterline since 2007. [6]