[Elecraft] voltmeter offset and accuracy in K2

[W3FPR - Don Wilhelm]

Jean-Francois,

You certainly could do that - it should not alter any other function that I
am aware of.  The current display can be trimmed by changing Control Board
R7.

R10 and R7 are 1% resistors, and that provides repeaability from one K2 to
another - one could hand-pick from 5% resistors just as well.
I personally would be concerned about leaving a trimmeer in place because of
the possibility of the setting being changed, but certainly using a trimmer
to determine the exact value required would be an easy method.

73,
Don W3FPR

> -----Original Message-----
>
> Hi Don,
>
> You said : "By lowering the value of R10 ..."  Could I just put a
> trimmer near that value instead of R10 and tune the trimmer so that
> the voltage displayed match more closer the real external voltage ???
>
> And could I do limilar thing with the current display ???
>
> I don't want to be more catholic than the Pope, but is it possible to
> do those mods ???
>
> Best 73 from a junior ;-)
>
> Le 05-07-23 à 18:56, W3FPR - Don Wilhelm a écrit :
>
> > Steve,
> >
> > Although some have been confused by the readings at first, I don't
> > see any
> > advantage in modifying the internal voltmeter to read the external
> > supply
> > voltage - what it reads is the actual voltage the K2 is operating
> > at - but
> > if changing it is your choice, by all means do it - it should be a
> > simple
> > task of padding R10 (or lowering its value a bit).
>
>
> ======
>
> Jean-François Ménard / VA2VYZ
>
> ======
>
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