Hi Kevin Tnx a million for your valuable response. I don't know if there is a definition of a 50% weight ratio on a shaped waveform, but I surely know what the displayed waveform sounds like! And it looks just like what I had expected.
I am a little embarassed on behalf of Elecraft that this was not readily available info. After all, most buyers of Elecraft devices probably are keen CW operators and my guess is that a lot of us have bought Elecraft exactly for a reason: to be sure to have the best CW rig on the market. It still is pretty good, but the internal keyer problem is a flaw. Therefore, Elecraft, how about a modification which enables the internal K2 keyer actually providing 50% weight. 73 from an Elecraft lover Paul, OZ4UN -----Oprindelig meddelelse----- Fra: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] På vegne af w9cf Sendt: 23. april 2011 20:23 Til: elecraft@mailman.qth.net Emne: Re: [Elecraft] key dot weight Poul Erik Karlshøj (PKA) wrote: > > Thanks Don and others for referring me to the CW bandwidth mod (wave > shape mod). > It shows the fine waveform of the K2. Mine is ser. 4662 and has that mod. > I am by no means complaining about the waveshape - it is superb. I am > only complaining a little bit about the inability to reach 50% weight. > It is quite close and maybe acceptable to most operators and for me it > is only a problem at QRQ. > > I have asked many times, but nobody has yet answered my simple > question of what the minimum weight should be (when set to 0,9). > > 73, Paul OZ4UN > Paul, I don't know exactly how the weight is defined for a shaped wave form. So to answer your question for my K2, I put the wave form from my K2 serial number 5235 when set at 40 wpm and weight 0.90 and at 1.10 in the files: http://fermi.la.asu.edu/w9cf/k2/40wpm_090wt.jpg and http://fermi.la.asu.edu/w9cf/k2/40wpm_110wt.jpg 40 wpm should take 60 milliseconds between dots. You can see that, at the default weight of 1.10, it takes something like 67 milliseconds between dots and is quite heavy. At 0.90 the time between dots is about 60 milliseconds, but it looks to me to be a weight of at least 1.0 and probably more. I recorded these with my K2 set at minimum power into a dummy load, and used a separate receiver to the sound card on my laptop (the receiver was my ATS-4a which has no AGC). I hope this helps. 73 Kevin w9cf -- View this message in context: http://elecraft.365791.n2.nabble.com/key-dot-weight-tp6259927p6299903.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 ______________________________________________________________ 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
