[Elecraft] [K3] K3 S Meter

[Philippe Trottet]

Dear Bill,
Thanks a lot for the clear explanation and fully right to follow the
manufacturers direction but I was ? about it considering my "jurassic"
habits. 
I will use the indicated config as you mentioned as I'm still in the K3
pre-school !
New rigs, new technologies....Ham radio is great to stay younger !
Thanks to Elecraft !
Bst 73's
Philippe 
A65BI / F5LTB (and ex 9Q1TB & many others...)

Philippe TROTTET 
Head of Field Telecom Unit - DUBAI
 
United Nations High Commissioner for  Refugees
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>>> Bill W4ZV <btippett at alum.mit.edu> 18-11-2009 14:32 >>>

On Wed, Nov 18, 2009 at 12:09 AM, Philippe Trottet [via Elecraft] <
ml-node+4023431-500668120 at n2.nabble.com<ml-node%2B4023431-500668120 at n2.nabble.com>
> wrote:

> Dears
> I've seen on the manual S9 /50 microvolts is adjusted with Preamp ON
.
> As a new Elecrafter I need some explanations, because with my
previous
> rigs, I use to calibrate S9 without the preamp.
> Thanks
> Philippe A65BI
> K3 #3616
>

Bon jour Phillipe,

The simple answer is "Always follow the manufacturer's directions".  A
more
complex one is that the K3, being a DSP rig, compensates internally in
firmware for the fact that PREamp is ON during the calibration
procedure.

I also recommend using CONFIG: SMTR MD - ABS.  This will place the
K3's
S-meter in ABSolute mode, so that the S-meter always reads the signal
being
applied to the input terminals correctly, independently of whether PRE
or
ATT are selected internally.  This is also different than most rigs
but, if
you think about it, it is better since the S-meter always read the
true
signal level at the input terminal, before any gain or attenuation is
applied inside.

73,  Bill  W4ZV

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