Tuesday, July 17, 2018

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Telecommunication

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Earth station at the satellite communication facility in Raisting, Bavaria, Germany
Visualization from the Opte Projectof the various routes through a portion of the Internet
Telecommunication is the transmission of signs, signals, messages, words, writings, images and sounds or information of any nature by wireradio, optical orelectromagnetic systems.[1][2] Telecommunication occurs when the exchange of information between communication participants includes the use of technology. It is transmitted either electrically over physical media, such as cables, or via electromagnetic radiation.[3][4][5][6][7][8] Such transmission paths are often divided into communication channels which afford the advantages of multiplexing. Since the Latin term communicatio is considered the social process of information exchange, the term telecommunications is often used in its plural form because it involves many different technologies.[9]
Early means of communicating over a distance included visual signals, such as beaconssmoke signalssemaphore telegraphssignal flags, and optical heliographs.[10] Other examples of pre-modern long-distance communication included audio messages such as coded drumbeats, lung-blown horns, and loud whistles. 20th and 21st century technologies for long-distance communication usually involve electrical and electromagnetic technologies, such as telegraphtelephone, and teleprinternetworksradiomicrowave transmissionfiber optics, and communications satellites.
A revolution in wireless communication began in the first decade of the 20th century with the pioneering developments in radio communications by Guglielmo Marconi, who won the Nobel Prize in Physics in 1909, and other notable pioneering inventors and developers in the field of electrical and electronic telecommunications. These included Charles Wheatstone and Samuel Morse (inventors of the telegraph), Alexander Graham Bell (inventor of the telephone), Edwin Armstrong and Lee de Forest (inventors of radio), as well as Vladimir K. ZworykinJohn Logie Baird and Philo Farnsworth (some of the inventors of television).Image result for calldrops

MX VHF Wireless Cordless Microphone System 2 Handheld Mic Fixed Frequency