[Elecraft] Spectogram: cw done, now SSB question

Tue Dec 17 01:19:00 2002

Set your BFO frequencies to those in the manual, then use Spectrogram to
fine tune them.  Otherwise, you'll get the BFO on the wrong side and produce
the "other" image.

73,
Ed - W0YK

P.S.  There is a more technically pure approach which has you understand the
relationship between BFO frequency, filter passband, VCO, etc. and know by
the actual BFO frequency which one is correct ... but, I nearly always mess
that up.  The above approach guarantees you'll have the BFO on the right
side.

> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]]On Behalf Of [email protected]
> Sent: Monday, December 16, 2002 9:36 PM
> To: Elecraft Reflector
> Subject: [Elecraft] Spectogram: cw done, now SSB question
>
>
> Well thanks to Mike and others, it's coming back to me after a year since
> building the K2. I've got the cw filters setup with Spectogram
> and they seem
> pretty good. No change in tone when I go from filter to filter, but some
> change in tone when I go to cw rev - but that's OK I think.
>
> Now I'm working on the SSB from Tom's instructions and I'm
> confused again. I
> have setup the 500 and 2400 freq lines. Howver, if you rotate the
> BFO from 0
> through 255, there are two places within the range (on the same
> filter) that
> can make an image similar to Tom's pictures. For example, you might have a
> similar looking graph at 165 and 250. How do I know which "range" to use?
> Thanks again everyone.
> Regards, Tim NZ7C
>
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