What causes the whining noise on the radio?
#1
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Joined APC: Aug 2017
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What causes the whining noise on the radio?
When I hear some other pilots transmitting, there is a very distinctive whining noise on the radio. I don't believe it is environmental noise, because I have flown the same aircraft types and the flight deck doesn't sound like that. Any ideas what's causing it? You must have heard it yourselves.
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