Bob,

where you do you find the keying compensation for COM-port keying in
Win-Test? Weight?

Björn SM7IUN

Den tis 8 dec. 2020 kl 01:06 skrev Bob Wilson, N6TV <n...@arrl.net>:

> I posted various solutions to the K3 element shortening issue about 7 years
> ago. See this link on my QRZ.COM page <https://qrz.com/db/n6tv>:
>
>    - How to get clean fast CW from an Elecraft K3 without using CW QRQ mode
>    <http://lists.f5mzn.org/pipermail/support/2013-November/083384.html>
> (post
>    to Win-Test Reflector, November 14th, 2013)
>
> This was before the KSYN3A upgrades, which only helped the keying problem a
> little.  Element shortening is still there, and bad CW jitter is still
> present in the K3 + KSYN3A at speeds above 37 WPM with external keying.
> The internal K3 keyer sounds fine (it compensates), but external keying is
> a problem.  With VOX ON (QSK or semi-breakin), no PTT input, all keying
> elements are shorted by the TX DLY.  The default TX DLY nor 008 is really
> closer to 6 ms delay, after you get the KSYN3A upgrade, hence 6 ms of
> keying compensation required.  A high TX DLY for a slow amp. relay makes
> the problem much worse.  Keying Compensation is unfortunately not available
> in N1MM+ when using the convenient DTR and RTS CW keying over the K3 serial
> port or the K3S USB cable (CONFIG:PTT-KEY RTS-TR), but it should be added
> IMHO.  This feature is already available in Win-Test.
>
> More details and other fixes (e.g. use software generated PTT, no keying
> compensation) are found in that post above.
>
> The K4 has NO CW jitter problems that I've found, but element shortening by
> TX DLY is still present, and I've filed bug reports about it, but it's not
> at the top of their list yet.
>
> 73,
> Bob, N6TV
> K4 Field Tester
>
>
> On Sun, Dec 6, 2020 at 2:01 PM Dave Hachadorian <k6ll.d...@gmail.com>
> wrote:
>
> > Bingo! That's the answer!  Many thanks Bill!
> >
> > I confirm that keying compensation = 6 produces nice 50% duty cycle dits
> > with the K3.
> >
> > Dave Hachadorian, K6LL
> > Yuma, AZ
> >
> > -----Original Message-----
> > From: Willard Myers
> > Sent: Sunday, December 6, 2020 2:34 PM
> > To: k6ll.d...@gmail.com
> > Subject: [Elecraft] K3 shortening CW dits
> >
> > Dave,
> >
> > What you have found applies to all K3 radios when keyed by the KEY IN
> port.
> > The key-down duration is too short by about 6 ms, independent of sending
> > speed. I address it by setting the Keying Compensation in my WinKeyer to
> 6.
> >
> >   Bill, K1GQ
> >
> >   Bill=
> >
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