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Space History Photo: Intelsat IV in an Anechoic Chamber

space history, nasa, satellites
Two female employees stand by the Intelsat IV in an anechoic (sound proof) chamber, in 1972. (Image credit: NASA.)

In this historical photo from the U.S. space agency, the communication satellite Intelsat IV stands in an anechoic (sound-absorbing) chamber with two female employees on July 5, 1972. It stood over 17 feet tall with an average of 6,000 voice grade circuits. Hughes Aircraft Company built the Intelsat IV satellite.

Intelsat or the International Telecommunications Satellite was an international organization of 65 nations that was established August 20, 1964 out of the growing demand for channels of communication and greatly expanded the commercial communications network. The Intelsat IV was placed in a synchronous orbit over the Atlantic with the capacity of about 6,000 circuits or 13 television channels.

Each weekday, SPACE.com looks back at the history of spaceflight through photos (archive).

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The National Aeronautics and Space Administration (NASA) is the U.S. government agency in charge of the civilian space program as well as aeronautics and aerospace research. Founded in 1958, NASA is a civilian space agency aimed at exploring the universe with space telescopes,  satellites, robotic spacecraft, astronauts and more. The space agency has 10 major centers based across the U.S. and launches robotic and crewed missions from the Kennedy Space Center in Cape Canaveral Florida. It's astronaut corps is based at the Johnson Space Center in Houston. To follow NASA's latest mission, follow the space agency on Twitter or any other social channel, of visit: nasa.gov.