[Elecraft] [K3] VFO tuning noise reduction mod results?

[Joe Planisky]

It seems you were right, Eric.  I had my K3 open for surgery recently  
to install the KRX3.  Of course, that involved lots of repositioning  
of the coax cables.  I also took the opportunity to make sure all the  
internal screws were tight.  When I got everything back together, the  
encoder noise on 10M was gone (at both SPI 1 and 2).  I still had a  
little at the bottom end of 6M, but setting SPI 2 completely  
eliminated it.  I'm happy.

73
--
Joe KB8AP


On Aug 26, 2009, at 10:28 AM, Eric Swartz - WA6HHQ, Elecraft wrote:

> [...]
> this can also be impacted by how you built the K3. The tightness of  
> screws and proper grounding of the PC boards can impact this, as can  
> the location of the synth to mixer coax cables. Seethe manual for  
> proper location.
>
> 73, Eric  WA6HHQ
>
>
>
> Joe Planisky wrote:
>> I have the VFO encoder noise on the low end of 10M.  Yesterday, I   
>> applied the VFO tuning noise reduction mod and switched to SPI 2  
>> in  CONFIG:VCO MD.  That seems to have reduced the tuning noise a  
>> little,  but not as much as I'd expected (or hoped).
[...]