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.
Mark Griffin, KB3Z
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.