[Elecraft] noisy VFO's

Keith Heimbold ag6az at hotmail.com
Tue Dec 13 17:13:53 EST 2011


Dale,

That describes the noise I hear as well.

Let me know if the oil treatment works.

Regards,

Keith
AG6AZ

Sent from my iPhone please excuse typos

On Dec 13, 2011, at 12:29 PM, "Dale Boresz" <dmb at lightstream.net> wrote:

> Hello Natan,
> 
> I can hear the same thing here. Decent high frequency hearing and a 
> reasonably quiet shack are prerequisites to hearing it though. It's a 
> 'shhhhh' sound that occurs as a result of the surface of the knob 
> dragging against the felt as the VFO knob is spun. I've considered 
> applying a light coat of mineral oil to the felt washer to quiet it 
> down, but haven't tried it yet. NOTE: I am not recommending this; I was 
> just thinking about trying it...
> 
> 73, Dale
> WA8SRA
> 
> 
> 
> On 12/13/2011 11:03 AM, Natan Huffman wrote:
>> Hello All,
>> 
>> Last Friday I took delivery of a new K3 along with a P3 and lots of
>> accessories including Fred Cady's book on the K3.  Only problem to date is
>> "noisy" VFO knobs.  The technique to lessen drag does decrease or eliminate
>> the noise which sounds like fingernails dragged across a chalk board and I
>> do find that noise most objectionable.
>> Of course I can free myself of the noise by backing off the knobs but I'm
>> left with no noise, and no drag at all.  So my choices are no noise, or no
>> drag.  No drag leaves me with a
>> surprisingly free turning VFO knobs that is problematical and proper drag
>> leaves me with that horrible scraping which for me is simply intolerable.
>> 
>> Has anyone come up with this same problem and has found proper mitigation
>> solution?
>> 
>> Thanks,
>> 
>> 
>> 
>> Natan W6XR, C6AXR, VS6KR
>> Freeville, NY
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