[Elecraft] K3 S-meter calibration

[W6NEK]

Thanks for the info Bill,
That puts my mind at ease knowing that what I observed (below) is normal
given the current state of firmware development.  No problem, I'll just wait
for the future firmware correction.  By the way, my rig has the HAGC
hardware mod installed.

Best 73,
Frank - W6NEK
K3 312

----- Original Message ----- 
From: "Bill W4ZV" <btippett at alum.mit.edu>
To: <elecraft at mailman.qth.net>
Sent: Sunday, February 10, 2008 1:14 PM
Subject: Re: Re:[Elecraft] K3 S-meter calibration


>
>
>
> W6NEK wrote:
>>
>> Hi Dave,
>> I am curious what version of firmware you're running in your K3.  My K3
>> (SN 312) is running the latest firmware (MCU 1.66 & DSP1 1.52).  I have
>> CONFIG menu "SMTR OF = 024 & SMTR SC = 014) with PRE AMP on.  As expected
>> my S-Meter reads S9 with 50uv applied from a XG1 signal generator.
>> However, when tuning in local broadcast stations, which are S9+50 db on
>> three other receivers, my K3 only reads S9+20 db.  In addition, if I turn
>> my RF Gain Control fully counter clock wise (anti clock wise) the S-Meter
>> only reads S7 rather then full scale.
>>
>> <SNIP>
>>
>> So the question is: am I the only one who has an S-Meter response as
>> described above?
>>
>> Thanks for any input,
>> Frank - W6NEK
>>
>>
>
> Hi Frank,
>
> I'm on the Field Test team so I'm using 1.67/1.53.  I've also made the
> Hardware AGC Mod G4AON described.  Using the XG1 and Preamp On (following
> the manual S-Meter calibration procedure on page 48), I get SMTR OF = 030
> (at the upper limit of adjustment) and SMTR SC = 014.  I'm also 
> experiencing
> the same issue you are with RF Gain full CCW resulting in only S7 on my
> meter.
>
> 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.
>
> 73,  Bill  W4ZV
> -- 
> View this message in context: 
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> Sent from the Elecraft mailing list archive at Nabble.com.
>
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