> Clicks are a function of a FAST RISE TIME and DISTORTION, not > keying speed.
Not quite ... keyclicks are often a second derivative effect. They occur when the rate of change of the rate of change is high - specifically at the "corners" of the waveform (a abrupt change in the slope coupled with high power levels). At one time W8JI had some scope and spectrum samples of CW waveforms with "slow" rise/fall rates but very bad clicks. In every case the ramp was fine but there was an abrupt change when the ramp reached the steady state (on) condition or at instant of transition from the steady state (on) condition to the start of the decay phase. These effects can be most readily observed in rigs with high IF gain as they are quite similar to clicks generated in the old class C amplifiers as the drive level passed from AB into "hard" C. 73, ... Joe, W4TV > -----Original Message----- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim Brown > Sent: Tuesday, December 01, 2009 1:42 PM > To: Elecraft List > Subject: Re: [Elecraft] K3: killing RX key clicks > > > On Tue, 01 Dec 2009 11:29:24 -0700, David Gilbert wrote: > > >In my experience with the K3 in several major contests since > I bought > >it > >last January, the very great majority of bad signals I've > heard on the > >air have been due to the TX on the other end, not the RX on my end. > > Strongly agree. > > And I strongly DISAGREE with Ron's statement that clicks are > an essential > part of CW. Clicks are a function of a FAST RISE TIME and > DISTORTION, not > keying speed. There's a KH6 contester who moved from K4 with > a monster > signal, monster clicks, monster SSB splatter, and monster > attitude to go > with it. I've told him about his clicks and splatter several > times, but > the clicks, splatter, and attitude are still there. > > 73, > > Jim K9YC > > > ______________________________________________________________ > 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
