Hello Ed,
Thanks a lot for the recommendation to build a Crystal Filter instead
of an Audio Filter. That makes of course a lot of sense. I will check
your homepage and return to you if I may, in case of any questions.
72/73
Mats - SM6LRR - SJ6R
2006/9/4, Ed - K9EW <k9ew57@gmail.com>:
>
> Hello Mats,
>
> If you're thinking of a CW Filter for the Argonaut 509, you might be
> interested in a Crystal Filter rather than an Audio Filter. I made an
> external crystal filter for my 509, and it works really well. If
> you're interested, see my Projects page at www.k9ew.net. I put my
> SCAF filter on the shelf after making this crystal filter.
>
> 72/73,
> ed - k9ew
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