We did that Willis. With 3 of the K3s it was easy to send on one and listen on the other. Still the best friend was the instrument that clearly revealed the problem. Here is the picture again.... http://forum.qrz.ru/attachment.php?attachmentid=29596&d=1264954098 Please have a look and tell me what you think.
73, Igor UA9CDC ----- Original Message ----- From: WILLIS COOKE To: Igor Sokolov ; [email protected] Cc: [email protected] Sent: Monday, February 01, 2010 1:20 AM Subject: Re: [Elecraft] [Elecraft_K3] TX CW discrepancy Igor, before I did anything else I would have a good friend whose judgment you trust listen to the Morse you generate with a critical ear and give you an honest opinion. Preferably someone who can hear you quite well and on a clear band. Contest comments can be accurate with the best of good will and they can be made with malice by someone who does not wish you well. Willis 'Cookie' Cooke K5EWJ ------------------------------------------------------------------------------ From: Igor Sokolov <[email protected]> To: [email protected] Cc: [email protected] Sent: Sun, January 31, 2010 8:49:22 AM Subject: [Elecraft] [Elecraft_K3] TX CW discrepancy It has started with complains of some of our contacts in the contest. They told us that the weighting of out TX CW is not standard. Two channel oscilloscope was brought into shack and 3 K3 tcvrs were checked: SN 1651 SW ver 3.06 SN 2929 SW ver 3.68 SN 3553 SW ver. 3.41 On all 3 units series of dots were sent using external keyer with 50% weight. While on the monitor output the weight remained to be 50% the RF output showed shortening of dots (and therefore lengthening of spaces) by 7 or 8 msec. This effect does not depend on WPM speed and therefore less pronounced at slower speeds. Could somebody confirm this please. We do not want to trouble Elecraft without being 100% sure that the problem exists. 73, Igor UA9CDC ______________________________________________________________ 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 ______________________________________________________________ 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
