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UID:launch-b4158c69-88e9-4bfa-927f-c3489cf48eda@padside
DTSTAMP:20260802T234925Z
DTSTART;VALUE=DATE:19600513
SUMMARY:Thor Delta | Echo
DESCRIPTION:The Echo 1 spacecraft was a 30.48 m diameter balloon of mylar 
 polyester film 0.0127 mm thick. The spacecraft was designed as a passive 
 communications reflector for transcontinental and intercontinental teleph
 one (voice)\, radio\, and television signals. It had 107.9 MHz beacon tra
 nsmitters for telemetry purposes. These transmitters were powered by five
  nickel-cadmium batteries that were charged by 70 solar cells mounted on 
 the balloon. Because of the large area-to-mass ratio of the spacecraft\, 
 dat
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