[Elecraft] Haunted K2

[Don Wilhelm]

Dave,

Easy fix - just loosen the screws on the VFO knob and move it back a bit to
create more drag on the knob.  Be certain the felt washer is in place, that
is the only thing that creates the drag - adjust the knob position on the
shaft until the drag is right for your taste.  If you initially adjusted the
drag for a 'light touch', the felt washer may have compressed a bit and your
current drag is not sufficient to hold the knob in position.

As a note for those with older K2s, I have found that the felt washer does
compress and wear out after a long while, so for those with a similar
problem, you may want to consider replacing it if the range of drag
adjustment is not to your liking.

73,
Don W3FPR

> -----Original Message-----

>
> Good afternoon,
>
> Now that I have your attention, I don't really think that my K2 is
> haunted, but it does seem to want to tune itself.
>
> As I tune the knob up and down the bands and come to the frequency that
> I want to listen or transmit on, I stop turning the knob and I take my
> hand off.  The knob is fully stopped when I do this.  As I watch the
> readout after taking my hand off, the frequency starts to change slowly,
> sometimes adding (or subtracting) as much as 80 hz to the frequency at
> which I stopped the knob.  The knob is actually turning by itself.  It
> may go either direction and seems not to be correlated to whichever
> direction of rotation I was using when I stopped turning.
>
> I have been using the K2 regularly on the HF bands only for the past few
> weeks. Since building the unit last spring, I have used it mainly as an
> IF rig on the microwave bands.  Until the last day or two, I haven't
> noticed the "self tuning" feature.
>
> Perhaps this phenominom has been previously noted and a fix found.  I
> cheerfully admit that I haven't done any research in the Elecraft
> Archives.
>
> So....what say ye about this?
>
> Dave, K4TO
>