[Elecraft] K3 VFO A encoder noise

[Don Wilhelm]

Elecraft is trying to improve this VFO tuning noise.  It is worse on 
some KX3s than others, and I expect it is a function of the strong 
signals in your particular area (but I have no confirmation of that 
simple guess).

The VFO tuning noise (gets more noticeable at higher frequencies) can be 
reduces with the VFO NR menu item (that is a per band setting).  If that 
is not enough, add RX SHIFT (also a per band setting).

Use these temporary mitigation tools and keep your eyes peeled to the 
firmware release notes to see if anything has been added to reduce that 
noise and return your KX3 to the more normal settings.

Note that both those menu items are locked, and must be unlocked before 
the parameters can be changed.

73,
Don W3FPR

On 7/10/2012 9:54 PM, David Moes wrote:
> Is this normal?
> I'm getting a strange noise when turning the VFO A   on 10m  at around
> 28.000 to 28.007  then again at 28.037 to 28.045     as I turn the VFO I
> get a buzz or rattle from the speaker or in the headphones.    hard to
> describe but much like the sound of a needle scratching across a
> record.      if I rock the VFO back and forth its like scratching the
> needle back and forth across the record grooves.  when I turn it slowly
> it makes one click per VFO step.   if I set it to fine its a click per
> 1hz step   then normal its a click per 10hzstep and so on.    its not
> loud and registers about s2  on the meter.  with no antenna attached
> and is barely noticeable with an antenna as its almost below the noise
> at least here in the city.   I havent noticed it elsewhere or on other
> bands.
>