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50 years ago nasa launched its first

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communication satellite echo1

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made from mylar polyester film and

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measuring about 100 feet across when

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fully deployed the balloon-shaped

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spacecraft was designed as a passive

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communications reflector for

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transcontinental and intercontinental

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telephone radio and television signals

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during orbit a special recorded message

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from president dwight eisenhower was

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bounced off echo one and picked up by

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radio operators across the nation this

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is president eisenhower speaking

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it is a great personal satisfaction to

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participate

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in this first experiment in

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communications

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echo success proved that microwave

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transmission to and from satellites in

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space was understood and demonstrated

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the promise of communication satellites