[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 1.051.151.25 Dit 4954 56 64 69 Dah 162 166 171 177 183 Space 6460 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 1.051.151.25 Dit 50 52 58 64 Dah 165166 171 178 Space66 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3 and KX3] CW WGT observations and measurements
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-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Cady, Fred Sent: Friday, November 09, 2012 6:03 PM To: elecraft@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 1.051.151.25 Dit 4954 56 64 69 Dah 162 166 171 177 183 Space 6460 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 1.051.151.25 Dit 50 52 58 64 Dah 165166 171 178 Space66 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 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3 and KX3] CW WGT observations and measurements
Hi Fred, The Weight control adds the same time extension to both Dit and Dah, therefore, as the weight changes, so will the Dit to Dah ratio. I also find that the KX3 keyer does not have a Weight of 1 when set to 1.00, it's close to 0.80. The Weight control needs to be set to 1.20 to have a sending weight of one. Supporting scope shots are here: http://www.kn5l.net/KX3/kx3-weight.html John KN5L __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K3 and KX3] CW WGT observations and measurements
John Oppenheimer wrote > Hi Fred, > ... > I also find that the KX3 keyer does not have a Weight of 1 when set to > 1.00, it's close to 0.80. The Weight control needs to be set to 1.20 to > have a sending weight of one. > > Supporting scope shots are here: > http://www.kn5l.net/KX3/kx3-weight.html > > John KN5L Hi John et al., After the modified KXPD3 could be adjusted nearly perfect for my needs I would very appreciate if Elecraft could improve the timing of the KX3 keyer (either by correction or by extending the weighting range). 73, Heinz HB9BCB -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-and-KX3-CW-WGT-observations-and-measurements-tp7565380p7565405.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
