> My call - K1ESE - is misinterpreted in CW as - K1EST - when my keying
> is too soft. I cured this on my Orion by setting the CW rise/fall time
> from 7ms to 5ms. I can't find the parameter to set the rise/fall time on
> my K3.
John,
I found that in the last K3 F/W release (or perhaps the one just before it),
the K3's CW rise/fall time is now roughly 2.5 ms compared to the previous
5-6 ms. I had to verify my scope settings on another time base to ensure I
had not misinterpreted the measured result.
That being the case, it seems to me that the K3's CW envelope has gone
through two evolutionary changes. The first occurred a while back with a
hardware fix and that mod is documented on the Elecraft website. Prior to
the fix, CW rise was about 8 ms or perhaps a bit longer. After the hardware
fix, the rise went to about 5-6 ms. And now, we seem to be down to about
2.5 ms.
Whether intentional or not by Elecraft, that is what I now measure on my K3.
Perhaps this is not representative of other K3s. Also, I do not detect an
increase in the amount of keying sidebands with the faster ramping/decay.
So, the ALC is still preserving the raised cosine function very well.
Long story short -- if Elecraft did in fact accelerate the ramping/decay
time of the CW envelope down to about 2.5 ms, I can't imagine why anyone
would want keying any harder and faster than that. I am very happy with
what I'm seeing.
Paul, W9AC
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