Portal:Telecommunication

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The Telecommunication Portal

Earth station at the satellite communication facility Raisting Earth Station in Raisting, Bavaria, Germany

Telecommunication, often used in its plural form, is the transmission of information with an immediacy comparable to face-to-face communication. As such, slow communications technologies like postal mail and pneumatic tubes are excluded from the definition. Many transmission media have been used for telecommunications throughout history, from smoke signals, beacons, semaphore telegraphs, signal flags, and optical heliographs to wires and empty space made to carry electromagnetic signals. These paths of transmission may be divided into communication channels for multiplexing, allowing for a single medium to transmit several concurrent communication sessions. Several methods of long-distance communication before the modern era used sounds like coded drumbeats, the blowing of horns, and whistles. Long-distance technologies invented during the 20th and 21st centuries generally use electric power, and include the telegraph, telephone, television, and radio.

Early telecommunication networks used metal wires as the medium for transmitting signals. These networks were used for telegraphy and telephony for many decades. In the first decade of the 20th century, a revolution in wireless communication began with breakthroughs including those made in radio communications by Guglielmo Marconi, who won the 1909 Nobel Prize in Physics. Other early pioneers in electrical and electronic telecommunications include co-inventors of the telegraph Charles Wheatstone and Samuel Morse, numerous inventors and developers of the telephone including Antonio Meucci and Alexander Graham Bell, inventors of radio Edwin Armstrong and Lee de Forest, as well as inventors of television like Vladimir K. Zworykin, John Logie Baird and Philo Farnsworth.

Since the 1960s, the proliferation of digital technologies has meant that voice communications have gradually been supplemented by data. The physical limitations of metallic media prompted the development of optical fibre. The Internet, a technology independent of any given medium, has provided global access to services for individual users and further reduced location and time limitations on communications. (Full article...)

BlackBerry was a brand of smartphones and other related mobile services and devices. The line was originally developed and maintained by the Canadian company BlackBerry Limited (formerly known as Research In Motion, or RIM) from 1999 to 2016, after which it was licensed to various companies.

Specializing in secure communications and mobile productivity, BlackBerry was once well known for the keyboards on most of its devices and software services that ran through its own servers. At its peak in September 2011, there were 85 million BlackBerry subscribers worldwide. However, BlackBerry lost its dominant position in the market due to the success of the Android and iOS platforms; its numbers had fallen to 23 million in March 2016, a decline of almost three-quarters. (Full article...)
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Morse in 1866
Samuel Finley Breese Morse (April 27, 1791 – April 2, 1872) was an American inventor and painter. After having established his reputation as a portrait painter, in his middle age Morse contributed to the invention of a single-wire telegraph system based on European telegraphs. He was a co-developer of Morse code in 1837 and helped to develop the commercial use of telegraphy. (Full article...)

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  • ... that A Question of Love was widely regarded as a bold film for portraying homosexuality, a rare topic for television dramas in 1978?
  • ... that a Nebraska radio station chartered an aircraft to search for motorists stranded after a blizzard?
  • ... that for the first time this century, this year's British Athletics Championships were not broadcast on live television?
  • ... that Don Mullally, a DJ at Vermont radio station WSTJ between 1952 and 2016, was still playing vinyl records when he retired just two weeks before his death?
  • ... that a New York state radio station became entangled in an estate dispute in which a man was jailed four times in six months for contempt of court?
  • ... that when her boss told her to quit her unpaid television commenting role, Katie Phang quit her paid job instead?

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