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Thread: AF 447 Search to resume
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Old 9th November 2009 | 16:22
  #10 (permalink)  
djp
 
Joined: Dec 2007
Posts: 37
Likes: 0
From: Germany
Why do they not make responders for underwater "listen" , rather than sending out pulses when no one is listening . This way the recorders could "live" for months in listen mode . Hear a sonar and then respond with a stronger beacon signal.
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