[Elecraft] Re: K3 Audio

[n4lq]

I see the same extra stripe using mixw  and an RF generator. I had to turn 
down the line out of the K3 to 001 and crank up the sound card to max 
inorder to eliminate it. The level is a bit weak now and needs more gain. 
There is something not quiet right here.
Steve Ellington
N4LQ at insightbb.com
----- Original Message ----- 
From: "Jim Brown" <jim at audiosystemsgroup.com>
To: <elecraft at mailman.qth.net>
Sent: Friday, August 08, 2008 1:19 PM
Subject: Re: [Elecraft] Re: K3 Audio


> On Fri, 08 Aug 2008 09:30:55 +0100, Andrew Forrest wrote:
>
>>It appears that this effect is nothing to do with clipping or
>>transformer saturation but some kind of mixing.
>
> I'm also not convinced that this particular screen shot is non-
> linear distortion. It could be aliasing in the FFT software that's
> part of the decoder.
>
> On the other hand, the pdf below DOES show both harmonic distortion
> and IM distortion on the Line Output when the Line Out level is set
> too high (driving the transformer being driven beyond it's ratings).
>
> http://audiosystemsgroup.com/K3FilterStudy.pdf
>
> 73,
>
> Jim Brown K9YC
>
>
>
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