[Elecraft] K3 VFO A encoder noise

Howard Stephenson howard at elecraft.com
Tue Jul 10 23:25:58 EDT 2012


David,

Try  [CONFIG]  VCO MD    tap the 1 keypad switch until you
see SPI 2; this selects the new bus clock rate. (The default setting is 
SPI 1.)

-- 
------
73's  Howard Stephenson  K6IA
Customer Support
------

> 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.



More information about the Elecraft mailing list