[Elecraft] Re: [K3] annoying resonance with internal speaker in K3

2008-08-11 Thread David Ferrington, M0XDF
Strange, mine not only does not do that, but I can't make it do that even if I tap it - do you have the chassis stiffener in place correctly? -- In theory, there is no difference between theory and practice, but in practice there is. On 11 Aug 2008, at 09:24, Stewart Baker wrote: The buzzing

[Elecraft] Re: [K3] annoying resonance with internal speaker in K3

2008-08-11 Thread Stewart Baker
Oh Yes ! 73 Stewart G3RXQ On Mon, 11 Aug 2008 10:56:36 +0100, David Ferrington, M0XDF wrote: Strange, mine not only does not do that, but I can't make it do that even if I tap it - do you have the chassis stiffener in place correctly? ___ Elecraft

[Elecraft] Re: [K3] annoying resonance with internal speaker in K3

2008-08-11 Thread Fern Rivard
Yes Stewart, I DO have the stiffener in place otherwise there would be some exposed holes on the top lid! I temporarily put some black electrical tap between the contact areas where the top lid meets the radio but that didn't stop any of it. The resonance appears to come from down below the pa

[Elecraft] Re: [K3] annoying resonance with internal speaker in K3

2008-08-11 Thread Stewart Baker
So do I Fern. I tried the tape, which originally seem to stop the problem. I then took a side cover off, and looked at the various clearances. I came to the conclusion the main culprit was the top of the PA shield being close to the top cover, but not actually attached to it. My solution,