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Echo 1 Horn Antenna at Bell Laboratories Echo 2
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Echo 1
Echo 1 communications satellite, during a test inflation in a dirigible hangar prior...
NASA
Horn Antenna at Bell Laboratories
Horn Antenna at Bell Telephone Laboratories in Holmdel, New Jersey, built in 1959...
NASA
Echo 2
Echo 2 undergoing tensile stress test in Weeksville, N.C.
National Aeronautics and Space Administration
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