[Elecraft] K3 Auto Notch distortion

[Tim Tucker]

I've noticed and observed this exact same thing while using MixW or DM780.
The auto notch doesn't kill the desired signal like it should - it appears
that it's "missing" on either side of the signal.  The manual notch works
as it should.

On Thu, Jan 26, 2012 at 11:08 AM, Nate Bargmann <n0nb at n0nb.us> wrote:

>
> While watching the effect of the autonotch on USB a CW signal in
> the passband on 20m with Fldigi, I see an interesting set of audio
> frequency bands that appear to be notches on either side of the desired
> notched signal but not on the signal itself.  Meanwhile the manual notch
> is a nice ~200 Hz wide band of notched audio.
>
> First, a screenshot with no notch enabled:
>
> http://i197.photobucket.com/albums/aa106/N0NB/Ham%20radio/k3-no-notch.png
>
> Second, the auto-notch:
>
> http://i197.photobucket.com/albums/aa106/N0NB/Ham%20radio/k3-auto-notch.png
>
> Finally, the manual notch:
>
>
> http://i197.photobucket.com/albums/aa106/N0NB/Ham%20radio/k3-manual-notch.png
>


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