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ТЕМА: Transmit Hum!

Transmit Hum! 03 Март 2019 02:43 #1

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I have been operating the ARRL DX Phone Contest.
When I am at 7.167 to 7.172 and I transmit, I get a terrible hum coming through my headphones, as well as the speaker.
What would be causing this?
I don't normally operate phone and it is not only on 40 but on 80 meters also.
It doesn't happen on the whole band but just at specific locations.
Please advise!
Mark Griffin, KB3Z
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Transmit Hum! 03 Март 2019 03:05 #2

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I may have found the problem.
I am using the Inrad W1 headset.
But, when I am using my microphone on the boom I don't have the problem.
I wonder why the Inrad W1 headset microphone is causing a problem.
Any suggestions?
Thanks!
Mark KB3Z
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