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What else is going to be transmitting on 37.5kHz in the Indian ocean ?
Lets try this again.
The media say the authorities say that they believe the signals are comming from a flight data recorder.
Only believe
What else is going to be transmitting on 37.5kHz in the Indian ocean ?
Suggest you listen to this .
BBC Radio 4 - Broadcasting House, 06/04/2014 ..about 09:53 minutes in... which gives a pretty authoritative explanation as to WHY they are being cautious.