[Elecraft] K2 Rev B PCB - Does it contain the side-tone mod?

[dw]

Ok,
I do see an 82mH shunt choke on the input of the 380N.
Thanks Don  :)

On Mon, 29 Jun 2009 14:02 -0400, "Don Wilhelm" <w3fpr at embarqmail.com>
wrote:
> Duane,
> 
> Those older mods have often been incorporated into the K2 design.  You 
> will find a version of this mod already on your K2 - it was incorporated 
> into the board for all K2 above SN 3000..
> 
> 73,
> Don W3FPR
> 
> dw wrote:
> > Hey Gang,
> > I read online yesterday that it may be that the K2 control PCB Rev-B
> > might have incorporated the side-tone audio filter somewhere in advance
> > of the LM380N chip, to produce a waveform closer to sine-wave.
> >
> > Does anyone know if this is true?
> >
> > Is there anyway of getting to look at a silk-screen pic for this board?
> >
> > Thanks
> > Duane
> > N1BBR
> >   
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