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Société Française Radio-électrique
The Société française radio-électrique (SFR, ''Radiolectric French Company'') was one of the first radiotelegraphic companies, founded by Émile Girardeau in 1910. It supported the conception and the production of the Radiola radio receivers, and the creation of the radio station of the same name. It disappeared in 1957 after merging with Compagnie Générale de Télégraphie Sans Fil, later merged into Thomson-CSF Thomson-CSF was a French company that specialized in the development and manufacture of electronics with a heavy focus upon the aerospace and defence sectors of the market. Thomson-CSF was formed in 1968 following the merger of Thomson-Houst ... References {{DEFAULTSORT:Societe francaise radio-electrique French companies established in 1910 Audio equipment manufacturers of France History of telecommunications in France Manufacturing companies established in 1910 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wireless
Wireless communication (or just wireless, when the context allows) is the transfer of information between two or more points without the use of an electrical conductor, optical fiber or other continuous guided medium for the transfer. The most common wireless technologies use radio waves. With radio waves, intended distances can be short, such as a few meters for Bluetooth or as far as millions of kilometers for deep-space radio communications. It encompasses various types of fixed, mobile, and portable applications, including two-way radios, cellular telephones, personal digital assistants (PDAs), and wireless networking. Other examples of applications of radio ''wireless technology'' include GPS units, garage door openers, wireless computer mouse, keyboards and headsets, headphones, radio receivers, satellite television, broadcast television and cordless telephones. Somewhat less common methods of achieving wireless communications involve other electromagnetic phenomena, s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Émile Girardeau
Émile Girardeau (12 October 1882 – 7 December 1970) was a French engineer, famous for being the first person to patent the original system of frequencies that is used and known today as radar. He was born in 1882 at Luçon, France (the Vendée). In his early life he attended the École Polytechnique (Polytechnic School) (1902-1908) and became the Instructor at the École nationale des ponts et chaussées (National School of Bridges and Roads). By 1910, Girardeau established the first radiotelegraphic radio connection in tropical countries with Joseph Béthenod. The radio connection systems were designed for the Radioelectric French Company. In 1919, Girardeau was promoted to Chevalier of the Legion of Honour for services in war. In 1922, Girardeau set in motion the idea for the creation of a public utility of information and music. Also in 1922, Girardeau helped establish the first private radio station in France, called RADIOLA, which at the end of March 1929 became Radio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiola (receiver)
Radiola may refer to: * ''Radiola'' (album), by Skank, 2004 * Radiola (radio station), a station in Paris, 1922–1944 * Radiola (plant), a plant genus in the Linaceae family * Radiola, the spines of fossil Cidaroida sea urchins * Radiola, a 1920s line of radios by RCA The RCA Corporation was a major American electronics company, which was founded as the Radio Corporation of America in 1919. It was initially a patent trust owned by General Electric (GE), Westinghouse, AT&T Corporation and United Fruit Comp ... * Radiola, a brand name of the French company Radiotechnique {{disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Receiver (radio)
In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. It is used with an antenna. The antenna intercepts radio waves (electromagnetic waves of radio frequency) and converts them to tiny alternating currents which are applied to the receiver, and the receiver extracts the desired information. The receiver uses electronic filters to separate the desired radio frequency signal from all the other signals picked up by the antenna, an electronic amplifier to increase the power of the signal for further processing, and finally recovers the desired information through demodulation. Radio receivers are essential components of all systems that use radio. The information produced by the receiver may be in the form of sound, video (television), or digital data. A radio receiver may be a separate piece of electronic equipment, or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiola (radio Station)
Radiola was a privately owned French radio station which broadcast under that name from 6 November 1922 until 28 March 1924 with the intention of promoting the sale of Radiola radio receivers, which were manufactured by the Société française radio-électrique (SFR), a subsidiary of the Compagnie générale de la télégraphie sans fil (CSF). The Paris-based station made its first test transmissions on 26 June 1922 and its first news bulletin was broadcast on 6 January 1923. Radiola's chief announcer was Marcel Laporte. Renamed Radio Paris on 29 March 1924, the station was taken into public ownership on 17 December 1933. It remained on air throughout the German occupation of France in World War II – under the control of the Nazi authorities and French collaborationists – until the liberation of Paris The liberation of Paris (french: Libération de Paris) was a military battle that took place during World War II from 19 August 1944 until the German garrison surrendere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thomson-CSF
Thomson-CSF was a French company that specialized in the development and manufacture of electronics with a heavy focus upon the aerospace and defence sectors of the market. Thomson-CSF was formed in 1968 following the merger of Thomson-Houston-Hotchkiss-Brandt with the Compagnie Générale de Télégraphie Sans Fil (''General Wireless Telegraphy Company'', commonly abbreviated as ''CSF''), these two companies being the source of the name ''Thomson-CSF''. It operated as an electronics specialist on products such as broadcasting equipment, electroacoustics, shortwave radio sets, radar systems and television. During the 1970s, the company diversified manufacturing backend telephony equipment, semiconductors, and medical imaging apparatus. It also entered into large deals outside of the domestic market, acquiring considerable business in the Middle East. During the late 1980s, Thomson-CSF, anticipating defence spending cutbacks, conducted a radical business restructuring, mergi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Companies Established In 1910
French (french: français(e), link=no) may refer to: * Something of, from, or related to France ** French language, which originated in France, and its various dialects and accents ** French people, a nation and ethnic group identified with France ** French cuisine, cooking traditions and practices Fortnite French places Arts and media * The French (band), a British rock band * "French" (episode), a live-action episode of ''The Super Mario Bros. Super Show!'' * ''Française'' (film), 2008 * French Stewart (born 1964), American actor Other uses * French (surname), a surname (including a list of people with the name) * French (tunic), a particular type of military jacket or tunic used in the Russian Empire and Soviet Union * French's, an American brand of mustard condiment * French catheter scale, a unit of measurement of diameter * French Defence, a chess opening * French kiss, a type of kiss involving the tongue See also * France (other) * Franch, a surname * French ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Audio Equipment Manufacturers Of France
Audio most commonly refers to sound, as it is transmitted in signal form. It may also refer to: Sound *Audio signal, an electrical representation of sound *Audio frequency, a frequency in the audio spectrum *Digital audio, representation of sound in a form processed and/or stored by computers or digital electronics *Audio, audible content (media) in audio production and publishing *Semantic audio, extraction of symbols or meaning from audio *Stereophonic audio, method of sound reproduction that creates an illusion of multi-directional audible perspective *Audio equipment Entertainment *AUDIO (group), an American R&B band of 5 brothers formerly known as TNT Boyz and as B5 * ''Audio'' (album), an album by the Blue Man Group * ''Audio'' (magazine), a magazine published from 1947 to 2000 *Audio (musician), British drum and bass artist * "Audio" (song), a song by LSD Computing *, an HTML element, see HTML5 audio See also *Acoustic (other) *Audible (other) *Audio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Telecommunications In France
History (derived ) is the systematic study and the documentation of the human activity. The time period of event before the invention of writing systems is considered prehistory. "History" is an umbrella term comprising past events as well as the memory, discovery, collection, organization, presentation, and interpretation of these events. Historians seek knowledge of the past using historical sources such as written documents, oral accounts, art and material artifacts, and ecological markers. History is not complete and still has debatable mysteries. History is also an academic discipline which uses narrative to describe, examine, question, and analyze past events, and investigate their patterns of cause and effect. Historians often debate which narrative best explains an event, as well as the significance of different causes and effects. Historians also debate the nature of history as an end in itself, as well as its usefulness to give perspective on the problems of the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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