[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, 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" <[EMAIL PROTECTED]>
> To: "David Ferrington, M0XDF" <[EMAIL PROTECTED]>
> Cc: "Fern Rivard" <[EMAIL PROTECTED]> "Elecraft List"

> 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?


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[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 unit. Fern


- Original Message - 
From: "Stewart Baker" <[EMAIL PROTECTED]>
To: "David Ferrington, M0XDF" <[EMAIL PROTECTED]>
Cc: "Fern Rivard" <[EMAIL PROTECTED]>; "Elecraft List" 

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?




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[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?


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[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 I noticed on my K3 is the top cover vibrating against
the top of the PA shield. There should be a greater clearance
between the two.


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