audiodistortions by DSP

[afu-dg3oo]

hi,

on April 18, 2006, i wrote about distortions at the audio:

> i have the following problem with my elecraft K2 s/n 3922:
>
> when i listening to a station in a quietly position of the AF
> GAIN (position 9 o clock pm), then the audio was a little bit
> distortet. when the AF GAIN are in a louder position, may be 10 o
> clock position, the distortion on the audio was disappeared. what
> can be the cause of this distortion?

Meanwhile it seemed to be, that i found the cause of the distortions.
When i switch the inhousing DSP (from elecraft) in the modus BYPass,
any distortions at the audio are disappeared and i am very happy to
listen to qsos.

Similary very hard audiodistortion i get, when the DSP switches is ON
and the denoiser is ON. You can read there in the display a message like
this: S1 .nr nt .

Also there are audiodistortions in low position (less than 9 o clock position
till zero position) of the AF GAIN, when you can read there:
S1 nr nt , the same only without the point before the letter nr.

Get anyone an idea, what i can do?

73 de dg3oo
manfred  


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[K. Rice]

Hi Manfred,

Re-check the denoiser, autonotch, and filter gain settings in table #7
on page 37 of the KDSP2_A1 manual, and set your K2 to the default
settings shown in table #7.

If the problem is still there,, you might try reducing denoiser
SSB gain and / or SSB filter gain below the default settings.  Try
reducing SSB filter gain first.

I had a problem that was similar (not identical) to yours that was
solved by reducing the denoiser and filter gain settings.

73,
Ken
K3VV
Coopersburg, PA.
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