[Elecraft] How to set up SSB
Nigel & Beryl Hayton
hayton at xtra.co.nz
Sat Nov 13 06:37:47 EST 2004
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:w3fpr at earthlink.net]
> Sent: Saturday, November 13, 2004 1:46 PM
> To: hayton at xtra.co.nz; elecraft at 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.
>
>
>
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