[Elecraft] [K3 and KX3] CW WGT observations and measurements
Cady, Fred
fcady at ece.montana.edu
Fri Nov 9 20:02:31 EST 2012
Hi all,
I normally keep the K3's CW WGT setting at 1.0 because I like the 3:1
Dah:Dit ratio and the 1:1 Dit:Space ratio. When I tried that with the
KX3 it sounded horrible to my ears - very choppy. So I set up to measure
the Dit, Dah and Space times with an oscilloscope. I can transmit into a
dummy load and measure the times easily. The data below is in
milliseconds for CW at 20 WPM.
You can see a better representation of these data in a graph at
https://sites.google.com/a/ke7x.com/www/home/miscellaneous-k3-informatio
n/k3-and-kx3-cw-wgt.
Looking at the data and the graph I can see that for the best match for
3:1 and 1:1 I should set the K3 WGT to 1.05 and the KX3's to 1.15.
K3
K3 Wgt 0.9 1 1.05 1.15 1.25
Dit 49 54 56 64 69
Dah 162 166 171 177 183
Space 64 60 55 50 46
Dah/dit 3.3 3.1 3.1 2.8 2.7
Dit/space 0.8 0.9 1.0 1.3 1.5
KX3
KX3 Wgt 1 1.05 1.15 1.25
Dit 50 52 58 64
Dah 165 166 171 178
Space 66 64 59 52
Dah/dit 3.3 3.2 2.9 2.8
Dit/space 0.8 0.8 1.0 1.2
Cheers and 73,
Fred KE7X
Fred Cady
"The Elecraft K3: Design, Configuration and Operation"
www.ke7x.com
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