[Elecraft] Sub RX S-meter cal

[Guy Olinger K2AV]

Is the separate S-meter calibration irrelevant (eg smeter cal is really only
setting up "front panel") once RF gain calibration is done in both RX, and
both RX RF gain curves are "standard"?

73, Guy.

On Wed, Oct 7, 2009 at 11:44 AM, Wayne Burdick <n6kr at elecraft.com> wrote:

> You're right, Ken: The manual mistakenly claimed that the sub's S-
> meter parameters were separate, and the firmware perpetuated the myth
> by allowing you to tap "SUB" when looking at SMTR OF and SC.
>
> The next manual revision will correct this.
>
> Sub and main S-meter calibration both benefit from the new RF GAIN
> calibration procedure.
>
> 73,
> Wayne
> N6KR
>
> On Oct 7, 2009, at 8:22 AM, Ken K3IU wrote:
>
> > The S-meter Cal procedure in the manual worked up until about v.3.15
> > or
> > so. Now I am pretty sure that it was NOT separately adjusting the
> > SubRx
> > S-meter, but I never checked, so I'm not sure. It doesn't really
> > matter now.
> >
> > I have determined that, at least on my K3 (#202) running v3.41 et al,
> > after running the RF Gain Calibration procedure and setting the MAIN
> > Rx
> > S-meter, the Sub Rx S-meter is spot on. It actually follows the
> > adjustment for the Main Rx S-meter, i.e., set Main Rx at an extreme
> > and
> > the Sub Rx shows the exact same extreme.
> >
> > So... it looks to me like there is no reason to have a separate
> > adjustment for the SubRx S-meter. I'm sure the manual will catch up.
> >
> > 73,
> > Ken K3IU
>
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