Tags: Spacecraft.

Project Echo was the first passive communications satellite experiment. Each of the two American spacecraft launched in 1960 and 1964 was a metalized balloon satellite acting as a passive reflector of microwave signals. Communication signals were bounced off them from one point on Earth to another.

Loading...

This page contains content from the copyrighted Wikipedia article "Project Echo"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.