[Elecraft] K3 / RF gain - S meter issue

[Wes Stewart]

I would first perform the RF Gain calibration using the K3 Utility.  The 
calibration program measures gain characteristics and applies software correction.

Then run the S-meter calibration.

Wes  N7WS

On 12/13/2017 2:25 PM, Bruce Meier wrote:
> Looking for suggestions here from someone that might have experienced this
> same issue - -
>
>   
>
> I have (2) K3 units (not the S model) that are acting different when the RF
> gain adjustments are turned fully counter clockwise.
>
> Ø  Unit one – s/n 1062: When the RF gain is decreased to full counter
> clockwise position the S-Meter registers full scale (60db over S9) as
> expected.
>
> Ø  Unit two – s/n 1193:  When the RF gain is decreased to full counter
> clockwise position the S-Meter registers only S8.
>
>   Facts:
>
> Ø  With the exception of the S-Meter readings with RF gain settings, both
> units are working fine
>
> Ø  Both units have ‘almost’ all mods installed.  If not all, they are at
> least both the same.
>
> Ø  Both units are running the same version of microcode (5.54) (2.88) (2.88)
> (1.26)
>
> Ø  Both units seem to register very close actual RF gain of stations when
> connected when tested on the same antenna
>
> Ø  Both units have the new synthesizers.
>
> Ø  Both units have second RX
>
> Ø  In both cases (both units) I can hear the audio level decreasing linearly
> as expected as the RF gain is turned counter clockwise
>
> I have tried to initialize the K3 and reload the firmware resulting in no
> change to the RF gain / S-Meter readings.
>
>   
>
> Elecraft Tech Support suggested:
>
> Ø  Calibrating the s-meter – did nothing
>
> Ø  Next suggestion – send the rig to California.
>
>   
>
> Anyone have this issue and fixed it??
>
>   
>
> 73,
>
> Bruce N1LN