> I am wondering why a narrow filter can cause key clicks? One cause is related to the placement of the CW frequency in relation to the filter passband. If skewed to the edge of a sharp filter, a severely distorted waveform will develop. A CW waveform is a quasi square wave and replication accuracy is dependent on a linear-phase response.
This topic was recently covered: http://mailman.qth.net/pipermail/elecraft/2011-January/143163.html Paul, W9AC ______________________________________________________________ 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
