[Elecraft] [K3 and KX3] CW WGT observations and measurements

Cady, Fred fcady at ece.montana.edu
Fri Nov 9 21:25:20 EST 2012


Rats. The url below got truncated. Just go to www.ke7x.com and click on
K3 and KX3 CW WGT
Cheers,
X
 

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Cady, Fred
Sent: Friday, November 09, 2012 6:03 PM
To: elecraft at mailman.qth.net
Subject: [Elecraft] [K3 and KX3] CW WGT observations and measurements

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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