Width adjustment of Manual Notch Filter on K3S

[Ken Bandy, KJ9B-2]

Hello.  Is it possible to manually adjust anything other than the position
of the notch filter on the K3S.  I recently was working FT8, when a ham
relatively close to me was desensing my receiver when working FT8 on the
same band.  I was able to notch him out by manually setting the filter, but
it seems like a pretty wide notch, especially for FT8, and was wondering if
it was possible to adjust the width of the notch.  I didn't see anything in
the manual regarding adjustment of the width.

 

Thanks and 73,

Ken, KJ9B

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[John Simmons]

A better technique would have been to turn off the AGC off and reduce
the RF gain.  I do this for FT8 and it works quite well.

-de John NI0K

Ken Bandy, KJ9B wrote on 9/11/2019 4:02 PM:

> Hello.  Is it possible to manually adjust anything other than the position
> of the notch filter on the K3S.  I recently was working FT8, when a ham
> relatively close to me was desensing my receiver when working FT8 on the
> same band.  I was able to notch him out by manually setting the filter, but
> it seems like a pretty wide notch, especially for FT8, and was wondering if
> it was possible to adjust the width of the notch.  I didn't see anything in
> the manual regarding adjustment of the width.
>
>  
>
> Thanks and 73,
>
> Ken, KJ9B
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
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[Nr4c]

Could you switch to “other” time slot so you don’t TX at same time?

Sent from my iPhone
...nr4c. bill

> On Sep 11, 2019, at 5:02 PM, Ken Bandy, KJ9B <[hidden email]> wrote:
>
> Hello.  Is it possible to manually adjust anything other than the position
> of the notch filter on the K3S.  I recently was working FT8, when a ham
> relatively close to me was desensing my receiver when working FT8 on the
> same band.  I was able to notch him out by manually setting the filter, but
> it seems like a pretty wide notch, especially for FT8, and was wondering if
> it was possible to adjust the width of the notch.  I didn't see anything in
> the manual regarding adjustment of the width.
>
>
>
> Thanks and 73,
>
> Ken, KJ9B
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:[hidden email]
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to [hidden email]

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