Re: VFO tuning noise reduction mod results?
Posted by
Joe Planisky on
URL: http://elecraft.85.s1.nabble.com/VFO-tuning-noise-reduction-mod-results-tp3517995p3542580.html
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).
[...]
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