[Elecraft] K3 Link to QRQ CW RECORDING

Guy Olinger K2AV olinger at bellsouth.net
Fri May 14 14:51:48 EDT 2010


Well, yes, I can hear that, barely, in the recording, but at 45 WPM?
And that doesn't sound irregular to me, it sounds shortened. Add a
little weight to it. Hate to say it, but ain't this started off in the
direction of the Princess and the Pea?  You DID have to run it slow to
make it apparent.

The real problem is that by pushing that speed you are working against
the absolutely pure, artifact-free, soft QSK that everyone seems to
want, along with all the features that pull CPU time away from state
changes. AND we are talking about resource- and time-constrained
HARDWARE code, the most difficult kind of coding on the planet.  AND
from a company that doesn't have the resources to spend on a couple
hundred salaried programmers and testers to work on it.

The degree of tricky I don't believe can be appreciated by anybody
that hasn't written and debugged hardware code in a production
environment.  You guys are really lucky that Wayne appears to enjoy
such stuff.  Hardware code is seriously deranged work.  The
alternative is guess who, and we all know how that has turned out for
innovation and RX performance.  I got the K3 for the RX, and if he
ever does manage to do artifact-free 50 wpm state changes with RX
between the dits and microscopically perfect CW shaping, then bully
for him and I owe him a few rounds somewhere.  But reality beckons...
Get your KPA's and P3's and other stuff out there to keep up the
revenue stream so we get to keep this string of innovation some take
for granted.

That off my chest, I'm in favor of an option for those of us that
would rather have HARD QSK instead of the squeaky clean, absolutely no
artifact "QSK" that so many seem to want. I had 60 wpm QSK, clean
between the bauds, with a tube electronic TR switch and a separate RX,
TX (SB 300/400), and an AGC and audio gain clamp circuit added to the
RX, driven off the TX key circuit, and you could hear between all the
dits at 60 wpm.  But ARTIFACT-FREE?  Surely you jest.  Another
approach might be at some set WPM, to drop out of state changes INSIDE
the letter.

73, Guy.

On Fri, May 14, 2010 at 1:31 PM, Steve Ellington <n4lq at carolina.rr.com> wrote:
> This file was made about a year ago and sent to Elecraft.
> A Winkeyer USB was used to generate 45 wpm and key the K3. This playback has been slowed so you can hear the uneven elements.
> The second half shows how the problem goes away when the K3 is locked in Transmit mode.
> http://docs.google.com/leaf?id=0By_pJYMIPoenM2FhNDE0ZDQtNzdkMy00ZjIyLWJmOWItNGFjZTI0ZWJhYWMy&hl=en
> Steve
> N4LQ
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