Guglielmo Marconi, photographed at 22 years of age, looks out from behind his first patented wireless receiver (1896).
Guglielmo Marconi was the son of Giuseppe Marconi of Bologna, Italy, and Annie Jameson, daughter of an Irish family. The young Marconi developed a deep interest in electrical phenomena. When he read of the experiments of Hertz on electromagnetic waves, he became obsessed with the idea that such waves could be used for transmitting information without the need for the wire connection of the electric telegraph. In 1894, Marconi began his wireless telegraphy project by repeating some of Hertz's experiments with a number of improvements. Marconi offered his wireless communication system to the Italian government, but it was refused. In London in 1896 he first patented his system and then secured backing for it. In 1897, Marconi formed his wireless telegraph company. His four-circuit tuning, patented in 1900, led to widespread use of his system. Universal adoption of wireless telegraphy was rendered even more certain by Marconi's famous experiment in December 1901. In St. John's, Newfoundland, he received a radio-wave signal sent out from Cornwall, England.
A partial biography of Guglielmo Marchese Marconi (1874-1937)
Guglielmo Marconi and Early Systems of Wireless Communication: a downloadable paper (pdf) based on R.W. Simons' address to the Institution of Electrical Engineers in 1984.
Guglielmo Marconi: The Father of Modern Communications
100 Years of Radio: a history which emphasizes the role of Marconi in radio.
Marconi, Gugleilmo - Bio
Marconi at Rathlin Island
Making Waves: a BBC site with includes many Marconi-relevant links.
Guglielmo Marchese Marconi
The Invention of Radio
Outline of Radio
Lets look at some of Marconi's technology:
A rough schematic of Marconi's original wireless system
A photograph of Marconi's 1895 transmitter
A more detailed schematic of Marconi's 1900 wireless system which incorporates
Sir Oliver Lodge's "Sintonic Principle" (1898)
A detailed schematic of the 1900 transmitter
The spark transmitter of 1900,