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

[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, until I get the file out was to split a piece of 
rubber sleeving lengthwise, and curl this over the top edge of the 
metal shield. This forces the top cover up slightly and also stops 
the metal surfaces from coming into contact on audio peaks.

73
Stewart G3RXQ
On Mon, 11 Aug 2008 08:34:25 -0600, Fern Rivard wrote:
> 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 unit. Fern
>
>
> ----- Original Message -----
> From: "Stewart Baker" <stewart at baker.nildram.co.uk>
> To: "David Ferrington, M0XDF" <M0XDF at Alphadene.co.uk>
> Cc: "Fern Rivard" <crc at cyberlink.bc.ca> "Elecraft List" 
<elecraft at mailman.qth.net>
> Sent: Monday, August 11, 2008 4:14 AM
> Subject: Re: [K3] annoying resonance with internal speaker in K3
>
>
> 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?