[Elecraft] K3S speaker vibration/whine

[ae4pb at carolinaheli.com]

Outstanding!! I’ll try that. I don’t listen to my rig often over the speaker as I have some different hearing losses in each ear.

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Jerry,

I have this buzzing in my K3, and have heard it in some (not all) of the K3s I have built for friends. I have found that most of it comes from vibration between the case top and the vertical metal pieces that contact the top. If that's what you're hearing, you can minimize it by putting some vinyl tape over the tops of the metal pieces.  In each case I've seen,  the buzzing is worst around 400 Hz, near my favored CW sidetone frequency!

73,

Randy, KS4L

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