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PCGG
PCGG (also known as the Dutch Concerts station) was a radio station located at The Hague in the Netherlands, which began broadcasting a regular schedule of entertainment programmes on 6 November 1919. The station was established by engineer Hanso Idzerda, and is believed to have been Europe's first sustained broadcasting station, as well as one of the first stations in the world to transmit entertainment intended for a general audience. PCGG's schedule generally featured one or two evening programmes per week. Although located on the west coast of Holland, the station had a large audience across the English Channel in Great Britain. However, Idzerda ran into financial difficulties, and PCGG's licence was revoked on 11 November 1924, one month before his company, ''Nederlandsche Radio-Industrie'', shut down due to bankruptcy. History Formation Hans Idzerda was an electrical engineer, who worked with the Philips manufacturing company during World War I. (Holland was a neutral count ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hanso Idzerda
Hanso Schotanus á Steringa Idzerda (26 September 1885 – 2 November 1944) was a Dutch scientist, entrepreneur and pioneer in radio technology. Between 1907 and 1917 he worked to introduce the already invented triode into radio technology. In 1919 Idzerda invented the triode IDZ-lamp, which was capable of transmitting and receiving radio messages containing the human voice. On 6 November 1919 he held the first public airing of a radio programme. His programme consisted of music, and him talking for a bit in between pieces. The PCGG transmitter he invented was capable of transmitting signals from The Hague all the way to England. Herman de Man, later to be an important author and radio maker, was present. From then on the programme aired every week. In 1922 the '' Daily Mail'' decided to sponsor Idzerda, who previously financed the operation with his own money and some donations. After the ''Daily Mail'' ceased its support Idzerda's company went bankrupt. On 2 November 1944, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Goldschmidt
Robert B. Goldschmidt (1877–1935) was a Belgian chemist, physicist, and engineer who first proposed the idea of standardized microfiche (microfilm). Goldschmidt was a polymath who also made advances in aviation and radio, among other fields. In 1913 he constructed a major radio facility at Laeken, Belgium, where in 1914 he and Raymond Braillard inaugurated Europe's first regular radio concert broadcasts. He was also a participant in the first and second international Solvay Conferences reviewing outstanding issues in chemistry and physics. Education and academic career Educated in Brussels and Berlin, Goldschmidt was a professor of chemistry at the University of Brussels for some thirty years. Career Microfilm In the first years of the twentieth century, he worked with Paul Otlet on the creation of microfilm, then known as "microphotographs. In 1906, he and Otlet proposed what they called the "livre microphotographique," which they considered to be a cheaper, more space-sav ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of The World's Oldest Radio Stations
It is generally recognised that the first radio transmission was made from a temporary station set up by Guglielmo Marconi in 1895. This followed on from pioneering work in the field by a number of people including Alessandro Volta, André-Marie Ampère, Georg Ohm and James Clerk Maxwell.Mimi Colligan, ''Golden Days of Radio'', Australia Post, 1991 The several potential contenders for the title of "oldest radio station" are listed below, organized by sign-on date. These are not restricted to radio broadcasting, i.e., the transmissions were not necessarily intended to reach a wide audience. Stations AM on Mediumwave and Longwave FM or Shortwave Networks See also *History of radio *Timeline of radio *History of broadcasting *AM broadcasting **Extended AM broadcast band *FM broadcasting ** FM broadcasting in the USA ** List of the initial commercial FM station assignments issued by the Federal Communications Commission on October 31, 1940 * *Oldest television station * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Idzerda
Hanso Schotanus á Steringa Idzerda (26 September 1885 – 2 November 1944) was a Dutch scientist, entrepreneur and pioneer in radio technology. Between 1907 and 1917 he worked to introduce the already invented triode into radio technology. In 1919 Idzerda invented the triode IDZ-lamp, which was capable of transmitting and receiving radio messages containing the human voice. On 6 November 1919 he held the first public airing of a radio programme. His programme consisted of music, and him talking for a bit in between pieces. The PCGG transmitter he invented was capable of transmitting signals from The Hague all the way to England. Herman de Man, later to be an important author and radio maker, was present. From then on the programme aired every week. In 1922 the '' Daily Mail'' decided to sponsor Idzerda, who previously financed the operation with his own money and some donations. After the ''Daily Mail'' ceased its support Idzerda's company went bankrupt. On 2 November 1944, a V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Detector (radio)
In radio, a detector is a device or circuit that extracts information from a modulated radio frequency current or voltage. The term dates from the first three decades of radio (1888-1918). Unlike modern radio stations which transmit sound (an audio signal) on an uninterrupted carrier wave, early radio stations transmitted information by ''radiotelegraphy''. The transmitter was switched On-off_keying, on and off to produce long or short periods of radio waves, spelling out text messages in Morse code. Therefore, early radio receiver, radio receivers had only to distinguish between the presence or absence of a radio signal. The device that performed this function in the receiver circuit was called a ''detector''. A variety of different detector devices, such as the coherer, electrolytic detector, magnetic detector and the crystal detector, were used during the wireless telegraphy era until superseded by vacuum tube technology. After sound (amplitude modulation, AM) transmission began ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Defunct Radio Stations In The Netherlands
{{Disambiguation ...
Defunct (no longer in use or active) may refer to: * ''Defunct'' (video game), 2014 * Zombie process or defunct process, in Unix-like operating systems See also * * :Former entities * End-of-life product * Obsolescence Obsolescence is the state of being which occurs when an object, service, or practice is no longer maintained or required even though it may still be in good working order. It usually happens when something that is more efficient or less risky r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Timeline Of Radio
The timeline of radio lists within the history of radio, the technology and events that produced instruments that use radio waves and activities that people undertook. Later, the history is dominated by programming and contents, which is closer to general history. Origins and developments 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. * 1780–1784: George Adams notices sparks between charged and uncharged conductors when a Leyden jar was discharged nearby. * 1789–1791: Luigi Galvani notices a spark generated nearby causes a convulsion in a frog's leg being touched by a scalpel. Lindell, pp. 258–261 In different experiments, he notices contractions in frogs' legs caused by lightning ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Radio
The early history of radio is the history of technology that produces and uses radio equipment, radio instruments that use radio waves. Within the timeline of radio, many people contributed theory and inventions in what became radio. Radio development began as "wireless telegraphy". Later radio history increasingly involves matters of broadcasting. Discovery In an 1864 presentation, published in 1865, James Clerk Maxwell proposed theories of electromagnetism, with mathematical proofs, that showed that light and predicted that radio and x-rays were all types of electromagnetic waves propagating through free space. Between 1886 and 1888 Heinrich Rudolf Hertz published the results of experiments wherein he was able to transmit electromagnetic waves (radio waves) through the air, proving Maxwell's electromagnetic theory. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Broadcasting Company
The British Broadcasting Company Ltd. (BBC) was a short-lived British commercial broadcasting company formed on 18 October 1922 by British and American electrical companies doing business in the United Kingdom. Licensed by the British General Post Office, their original office was located on the second floor of Magnet House, the GEC buildings in London and consisted of a room and a small antechamber. On 14 December 1922, John Reith was hired to become the Managing Director of the company at that address. The company later moved its offices to the premises of the Marconi Company. The BBC as a commercial broadcasting company did not sell air time but it did carry a number of sponsored programmes paid for by British newspapers. On 31 December 1926, the company was dissolved, and its assets were transferred to the non-commercial and crown-chartered British Broadcasting Corporation (BBC). Brief history Post Office stations In Britain prior to 1922, the General Post Office (GPO ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nellie Melba
Dame Nellie Melba (born Helen Porter Mitchell; 19 May 186123 February 1931) was an Australian operatic dramatic coloratura soprano (three octaves). She became one of the most famous singers of the late Victorian era and the early 20th century, and was the first Australian to achieve international recognition as a classical musician. She took the pseudonym "Melba" from Melbourne, her home town. Melba studied singing in Melbourne and made a modest success in performances there. After a brief and unsuccessful marriage, she moved to Europe in search of a singing career. Failing to find engagements in London in 1886, she studied in Paris and soon made a great success there and in Brussels. Returning to London she quickly established herself as the leading lyric soprano at Royal Opera House, Covent Garden from 1888. She soon achieved further success in Paris and elsewhere in Europe, and later at the Metropolitan Opera in New York, debuting there in 1893. Her repertoire was small; in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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