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Old 09-05-2017, 01:20 PM   #1
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Default 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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Old 09-05-2017, 02:49 PM   #2
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Pilots.

I keed, I keed.

Side tone, perhaps?

https://en.m.wikipedia.org/wiki/Sidetone
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Old 09-05-2017, 03:12 PM   #3
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Poorly shielded antennas and electrical leads.
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Old 09-12-2017, 04:16 PM   #4
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Often it is old Mad Dogs and their 400hz AC (CSD) Generators "hum"which gets picked up from the interphone system and/or headset wiring...
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Old 09-14-2017, 12:27 PM   #5
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Which is poorly shielded wiring, poorly routed wiring, antennas, and connectors. That problem can be alleviated with noise filters.
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Old 09-14-2017, 04:48 PM   #6
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Guys without a contract.........
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Old 09-17-2017, 04:06 PM   #7
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Thanks for the replies, folks (the serious and the funny ones). Much obliged.
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Old 09-17-2017, 05:28 PM   #8
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Quote:
Originally Posted by Ski Bird View Post
Pilots.

I keed, I keed.

Side tone, perhaps?

https://en.m.wikipedia.org/wiki/Sidetone
Lol, exactly what I would have said!
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