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Showing posts from February, 2024

Year 1920.

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  Broadcasting on a regular daily basis was born in the United States. The First demonstrations of radio broadcasting in Australia . The appearance in France of battery-powered receivers with valves and headphones. The Amsterdam Stock Market (Netherlands) broadcast stock prices and financial news . On 23 February - The Marconi Company organizes a radio-telephone concert (Featuring Dame Nelli Melba) that is broadcasted from Chelmsford (U.K.) and heard in France, Norway, Italy, Persia and by ships on the sea. The British Postmaster General protest against the "Frivolous'' use of public service and suspends broadcast in November. Autumn - Soviet International Broadcasts begins. 2 November - The Westinghouse station KDKA in Pittsburgh announce the victory of Warren G. Harding over James Cox in the American Presidential Election . The First Radio Telegraph (Maracay) services begins in Venezuela.

Year 1919.

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 17 October: The Radio Corporation of America (RCA) is founded, absorbng the American subsidiary of the Marconi Company and amalgamating General Electric, Western Electric , AT&T (American Telephone and Telegraph) and Westinghouse. The American Telephone and Telegraph Company (or AT&T) began as Bell Telephone in 1877. 16 November: In Germany; Hans Bredow organizes political and economic news broadcasts for the Press and the Industry. Many American radio amateurs receive on their crystal sets regular broadcasts from Pittburgh (USA) by Frank Conrad. On Wednesday and Saturday evernings the station plays records chosen by the listeners . This marks the appearance of broadcasting as opposed to wireless telephon, where a connection is made from one point to another, between two correspondants.

Year 1917.

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  The Bolsheviks use radio to influence the Germans during negotiations for the Treaty pf Brest-Litovsk. 8 November: A decree on the press establishes censorship that will last for 72 Years in Russia.

Year 1915.

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  First International Broadcasts , from Germany, of daily news reports . 25 October: The American Navy Radio station in Arlington, Virginia  establishes a link with the Eiffel Tower in Paris.  By 1915, Mare Island had built all of the radio stations .

Year 1914.

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 March to August: A weekly concert is broadcasted from the Chateau de Laeken (Belgium)

Year 1913.

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 Amateurs with galena-crystal radios listen in to the first regular weekly musical programmes broadcast from a wing of the Chateau de Laeken (Belgium). A federation of radio clubs , the Wireless Society of London ( later the Radio Society of Great Britain ) is founded in London. There is a special appeal about a device, however primitive, that can pull in radio voices and music through the air from many miles away without batteries or electrical power of any kind, just an antenna and a ground. BRITISH VINTAGE WIRELESS SOCIETY

Year 1912.

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 15 April: Radio amateurs pick up the SOS sent out by the TITANIC .  The sinking of the RMS Titanic on April 15, 1912 .

Year 1909.

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 Preparation of the recital by the Italian tenor Enrico Caruso was broadcasted from NYC Enrico Caruso was an Italian operatic first lyric tenor then dramatic tenor. He sang to great acclaim at the major opera houses of Europe and the Americas, appearing in a wide variety of roles that ranged from the lyric to the dramatic.

Year 1908.

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 2 April: Lee De forest experiments with his triode in France by broadcasting from the Eiffel Tower .

Year 1907.

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Marconi began to build high-powered stations on both sides of the Atlantic to communicate with ships at sea. In 1904, he established a commercial service to transmit nightly news summaries to subscribing ships, which could incorporate them into their on-board newspapers. A regular transatlantic radio-telegraph service was finally begun on 17 October 1907 between Clifden, Ireland, and Glace Bay, but even after this the company struggled for many years to provide reliable communication to others. Marconi's apparatus is also credited with saving the 700 people who survived the tragic Titanic disaster .

Year 1906.

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Reginald Fessenden (U.S.A.) constructs a high-frequency alternator and succeeds in transmitting the human voice via radio. 25 October: Lee de Forest (U.S.A.) applies for a patent on the triode, a 3-electrode valve that make possible the detection, transmission and amplifications of radio signals .

Year 1905.

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 In Canada, the Wireless Telegraph Act stipulates that a licence must be obtained for wireless telegraphy . First Wireless communication in Spain, between El Ferrol del Cauddilo and la Coruna. Discovery of the properties of galena (lead sulphide) as a detector of radio-electric signals .

Year 1904.

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  First experiments with telegraphic radio links in Spain. In France a commercial maritime radio network is set up under the control of the Ministry of Posts and Telegraphs. John fleming (U.K.) invents the thermionic two-electrode valve , or diode making possible sound transmission. A radiotelegraphy station is build on the Adriatic coast in the Principality of Montenegro.

Year 1902.

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Radiotelegraphy equipment was first installed on the Eiffel Tower in paris. But his equipment did not convey comprehensible messages. Photograph of Guglielmo Marconi radio equipment, c.1902.

Year 1901.

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12 December: Marconi makes the first transatlantic wireless transmission , using Morse code , between Poldhu in Cornwall (U.K.) and St. John's Newfoundland.

Year 1900.

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  Marconi obtains a patent for a process enabling a operator to select a wavelengh . (The first receivers picked up all frequencies at the same time.) Febryary: the first commercial wireless station is set up, on the island of Borkum (Germany).

Year 1898.

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5 November - Eugène Ducretet describes to the French Academy of Sciences Transmissions between the Eiffel tower and Pantheon in Paris (5 Km).

Year 1897.

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 Eugène Ducretet (France) experiments with wireless telegraphy ; Guglielmo   Marconi founds the Wireless Telegraph and Signal Company Ltd ., in London. Karl Ferdinand Braun (Germany) invents a device which completes '' the tuned circuit '', matching the wavelengt of transmitter and receiver, a procedure discovered by Sir Oliver Lodge (U.K.).

Year 1896.

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 2 June : In England, Guglielmo Marconi files a patent for a system of wireless communication , and later transmits and receives Morse code signals over a 3 km distance.

Year 1895.

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 Aleksander S. Popov (Russia) invent the lighting-recording antenna ; On 7 May he presents the first receiver electromagnetic waves to the St. Petersburg Physical and Chemical Society. New bolologna (Italy) Guglielmo Marconi carries out the first experimental transmission of wireless signals over the distance of 400, them 2,000 metres.

Year 1884.

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 In November 1894, in the basement of the Faculty of Science of Bordeaux, France, with a Hertz resonator equipped with a telephone, Albert Turpain sent and received his first radio signal, using Morse code transmitting distance up to the 25 meters, through four walls 50 cm thick.

Year 1859.

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Alexander Stepanovich Popov was born in 1859 in what is now the town of Krasnoturinsk in the Central Ural Mountains. Popov's father was the local priest, and the future inventor was also destined to enter the priesthood, and was sent to the Perm Seminary. During his schooldays, Popov already showed a keen interest in making and repairing toys and mechanical instruments, and his excellent results in maths and physics won him a place at St. Petersburg University. There he immersed himself in the latest developments in physics and electronics. Year 1859 - Russian engineer aleksander stepanovich popov