[Elecraft] K3 S-meter calibration

[Bill W4ZV]

Bill W4ZV wrote:
>  
> 
> Only one other Field Tester (W0YK) responded to a query about my odd SMTR
> OF reading and both of his units were 22/14 and 24/14, which leaves me
> wondering if there is something wrong in mine.  You comments make me think
> I may not be the only one with some sort of problem.
> 
> For other K3 users ***who have actually followed the S-meter calibration
> procedure in the manual***, please send me your settings for SMTR OF and
> SMTR SC.  I'll compile a list and post the results here.  If you just used
> the recommended settings of 24/14, there is no need to reply.
> 
> 

I got the following nearly instant response from Wayne:

*********************************************
Bill,

There's still one critical piece of firmware missing, and that is the
cause of your S-meter calibration problems: the HAGC CAL routine. This
compensates for variations in the hardware AGC curve in the I.F. amp.
Until Lyle and I get this in, both the RF GAIN control and the upper
end of the S-meter will read far off the mark on some units.

This will be true whether or not the HAGC modifications have been made.
In fact the HAGC CAL routine will have to be run again after the mod is
made.

Wayne
****************************************************

So please everyone,  don't bother responding to my original query 
and let's wait for Wayne and Lyle to provide the new firmware.

73,  Bill  W4ZV


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