> 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 ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
