K3 audio and rf inter reaction

[David Cutter]

Mode: cw, paddle sending string of dots or dashes any speed
power o/p: any, ie nil to max, dummy or antenna
filter: any, but more pronounced >1kHz
listening to side tone on phones or speaker

audio control: max
rf control: start low and raise until the artefact appears

or

rf: max
audio: low and raise until the artefact appears

at low speed the artefact sounds like a scraping noise riding on the string.  High speed it's like an extra edge.

Anyone confirm this, offer an explanation?

David
G3UNA
K3 #547
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[Ken Wagner K3IU]

I can't duplicate what you are describing here unless you are describing
the normal noise I hear between dits and dahs when using full QSK. I
hear no change at all in the sidetone at all. With FULL QSK, I do hear
the the background noise between dits and dahs which one might call an
artifact, but I think that is a normal thing with full QSK with a noisy
band. Transmitting into the dummy load, the background noise is, of
course,  much lower and so is the sound heard between dits and dahs.

Hope this helps!

73,
Ken K3IU
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
David Cutter wrote:

> Mode: cw, paddle sending string of dots or dashes any speed
> power o/p: any, ie nil to max, dummy or antenna
> filter: any, but more pronounced >1kHz
> listening to side tone on phones or speaker
>
> audio control: max
> rf control: start low and raise until the artefact appears
>
> or
>
> rf: max
> audio: low and raise until the artefact appears
>
> at low speed the artefact sounds like a scraping noise riding on the string.  High speed it's like an extra edge.
>
> Anyone confirm this, offer an explanation?
>
> David
> G3UNA
> K3 #547
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft   
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>
>  

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[David Cutter]

The effect is also present with monitor at zero.  In this condition, a
rushing sound is heard.  At a guess I would say it is digitally induced
noise.



Mode: cw, paddle sending string of dots or dashes any speed
power o/p: any, ie nil to max, dummy or antenna
filter: any, but more pronounced >1kHz
listening to side tone on phones or speaker

audio control: max
rf control: start low and raise until the artefact appears

or

rf: max
audio: low and raise until the artefact appears

at low speed the artefact sounds like a scraping noise riding on the string.
High speed it's like an extra edge.

Anyone confirm this, offer an explanation?

David
G3UNA
K3 #547

_______________________________________________
Elecraft mailing list
Post to: [hidden email]
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
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Elecraft web page: http://www.elecraft.com