From: jvorbrueggen-not@mediasec.de   
      
   > I believe the shuttle relays telemetry through satellites during reentry;   
   > the plasma sheath only covers the lower portion of the vehicle, so it can   
   > still transmit upwards (with difficulty). I have no idea what satellites it   
   > relays off.   
      
   TDRS. When data first dropped out from Columbia, this wasn't totally   
   unexpected, in particular because it was at that point in time at an   
   attitude where the tail was getting in the way.   
      
   	Jan   
      
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