SB3xx cw tone mod

[Sheldon Darack]

>Another very nice no-holes mod that I did on his 101 and on my SB300 for CW
>using the CW filter was to shift the BFO frequency down from its
>ridiculously-high 1+ kHz point to something much easier to hear such as
>around 600 Hz. As I remember it, this turned out to be really simple; I
>believe that I discovered that the crystal provided for RTTY was ideal and
>a trimmer capacitor across (or in series with) it provided the final bit of
>encouragment to get the BFO where I wanted it. 73, Steve Ko0U/1

>
I did that to my SB303.  It required cutting a trace, adding a xtl and
trimmer cap.  (The xtl was added so this didn't affect SSB receive) I can
set the cw peak receive frequency where it sounds best to me (wherever that
is)

Shel  WA2UBK

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