Don and All, I too was referring to the -3db to -6db point down from the top of the passband level (the scale and extraneous ripple makes it hard to be accurate. After initially setting the filter -3db to -6db at 300Hz the on air adjustment moved the filter to -3db to -6db down at 500Hz, more like Tom's plot. For my set and my voice setting the markers at 500 and 2700 produced a better sounding signal.
I made the comment to the reflector because I wondered if this might have also been the experience of the original query and to flag that I had to move my filter 200Hz as is suggested in the assembly manual. Excellent information comes out of this reflector on a whole range of subjects. I think you, Don, are very patient with all the repetitive enquiries about filter alignment which come up and you quietly give your good advice and information from your well set up website. I enjoy your contributions. Warm Regards 73s, Nigel ZL2DF > -----Original Message----- > From: W3FPR - Don Wilhelm [mailto:[EMAIL PROTECTED] > Sent: Saturday, November 13, 2004 1:46 PM > To: [EMAIL PROTECTED]; elecraft@mailman.qth.net > Subject: Re: [Elecraft] How to set up SSB > > > Nigel and all, > > I hope I have not caused any confusion, BUT ... > I have been refering to the classical filter 'corner > frequency' as the -3 dB > point, which does place the upper 'physical corner' seen on > the display at > 400 to 500 Hz. Perhaps I should change my text to clarify. > > 73, > Don W3FPR > > ----- Original Message ----- > I have just finished installing the KSB2 into my K2 sn 3029. > Both the KSB2 > and the MH2 were recently bought. > I downloaded both Don's, W3FPR, and Tom's, N0SS, notes for > alignment using > Spectrogram. Don suggests the lower roll off corner at > 300Hz and Tom's > plots show it at 500Hz. > > > _______________________________________________ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
