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Launched on July 10, 1962, Telstar 1 was the world's first active communications satellite. Developed by Bell Telephone Laboratories for the American Telephone and Telegraph Company (AT&T), Telstar received a signal from the Earth, processed it onboard, and then resent to another location below (an "active" satellite). AT&T used the satellite to test basic features of communications via space, including the feasibility of transmitting telephone and television signals and the effect of Van Allen belt radiation on spacecraft components.

During its operational life, Telstar 1 facilitated over 400 telephone, telegraph, facimile and television transmissions. Soon after launch, Telstar enabled the first transatlantic television transmission, linking the United States and France. In November 1962, the satellite's electronics failed, damaged by Van Allen Belt radiation. Telstar 2, which incorporated radiation resistant electronics, launched in May 1963, continuing AT&T's research effort.

This artifact is a one third scale model of the Telstar satellite, donated to the Museum by David Kosakoff in 1982.

Display Status

This object is not on display at the National Air and Space Museum. It is either on loan or in storage.

Object Details
Country of Origin United States of America Type MODELS-Uncrewed Spacecraft & Parts Manufacturer Bell Telephone Laboratories
Dimensions Overall: 35.6 x 30.5cm (14 x 12 in.)
Storage: 40.6 x 40.6 x 40.6cm (16 x 16 x 16 in.)
Materials Resin
Plastic
Aluminum
Copper Alloy
Paint
Adhesive
Steel
Inventory Number A19820211000 Credit Line Gift of David Kosakoff Data Source National Air and Space Museum Restrictions & Rights Usage conditions apply
For more information, visit the Smithsonians Terms of Use.