CW rise time

[Andrew Catanzaro]

According to my friends and according to MP3 files they have made for me,
the CW note from my K3 serial number 152 sounds fine.  Not as hard as my K2
and not too soft.  I see there is a modification to change the rise time
from 8 to 5 milliseconds by installing a different capacitor  at C222 on the
RF board.  I wonder what value cap is present in currently shipping K3's?
Wonder what people have thought about the change in the CW waveform after
changing this capacitor?

I know there are those who will say if it ain't broke, don't fix it.  But
it's the true Elecraft spirit to make something good even better.

 Please answer off list as well as on as I get the reflector in digest form
only.  Thanks!

Andy W9NJY
Milwaukee WI


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[Jim Brown-10]

On Fri, 1 Aug 2008 00:41:01 -0500, Andrew Catanzaro wrote:

>I know there are those who will say if it ain't broke, don't fix it.

The K3 has been VERY extensively tested by high stakes contesters, some
of whom live quite close to each other and run max legal power. If there
were any keying nasties, they would know!  As one who lives close to a
half dozen or so of these guys, I can say that IT AIN'T BROKE!

73,

Jim K9YC


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[Leigh L. Klotz Jr WA5ZNU]

According to http://www.elecraft.com/K3/k3_app_notes.htm this change was
phased in "Approximately Jan 20, 2008 Approx. s/n 211."  So that sounds
to me like the current shipping ones are 5ms instead of 8ms.  It also
alludes to future firmware control enabled by the mod.

Leigh/WA5ZNU

> According to my friends and according to MP3 files they have made for me,
> the CW note from my K3 serial number 152 sounds fine.  Not as hard as
> my K2
> and not too soft.  I see there is a modification to change the rise time
> from 8 to 5 milliseconds by installing a different capacitor  at C222
> on the
> RF board.  I wonder what value cap is present in currently shipping K3's?
> Wonder what people have thought about the change in the CW waveform after
> changing this capacitor?
>
> I know there are those who will say if it ain't broke, don't fix it.  But
> it's the true Elecraft spirit to make something good even better.
>
> Please answer off list as well as on as I get the reflector in digest
> form
> only.  Thanks!
>
> Andy W9NJY
> Milwaukee WI
>
>
> _______________________________________________
> 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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