USA achievements in satellite communication



In 1906 U.S.A launched Echo I, the world’s first communication satellite. It was a great balloon, as big as a ten storey buildings, made of Mylar, only half the thickness of cellophane.

A thin coating of aluminum reflected radio signals from coast and gave echo its star like luster. That year many eyes watched this new ‘star’



In 1962 USA launched Telstar. Unlike Echo I, which passively bounced back signals, Telstar could amplify the radio signals thousands of times. But it could relay messages only when placed between the sender and the receiver in the geostationary orbit.

In 1965 a small satellite called early bird was parked over the equatorial Atlantic. It relayed nearly 240 telephone calls simultaneously, between America and Europe. It also carried a TV channel. Though it had been built with a life expectancy of 18 months, four years after launch it was brought out of retirement to broadcast the investiture of the Prince of Wales, which nearly 500 million people watched.

Live via satellite. This paved way for Intelsat in 1965. In 1983, 15 satellites united 109 Intelsat member nations in a communication brotherhood that set an example of international cooperation. The Intelsat has reduced the cost of worldwide telecommunication – to 1/18th of what it was in 1965.

Intelsat v is the fifth generation after early bird. Instead of 240 voice circuits, it has 120, 00, plus two color TV channels. Being made of titanium they are very expensive.
Almost every month another communication satellite parks in the geostationary belt. Recently Indonesia united it thousand inhabited islands with satellites, teleconference is another booming field. Today a growing number of professions are abandoning costly travels to a common meeting place, and instead meet “face-to-face” through IV via satellite.

A series of U.S satellite, called Landsat was launched since 1972 to examine the earth’s surface for geological and agricultural investigations. Racing around earth 14 times a day, the Landsat I examined earth from 915 kms above.

USA achievements in satellite communication USA achievements in satellite communication Reviewed by knowledge people creators on December 17, 2019 Rating: 5
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