Excellent!! Thanks for taking the time to write and for the in-depth
explanation. I am constantly amazed (and grateful) for the expertise
available here on the reflector.
I will be working to correct the problem this weekend. I have used
Spectrogram (though obviously not well) and have a copy. I like your
idea of using the OPT1 filter and will give that a try.
Thanks again and 73,
John, WA6L
On Jun 5, 2007, at 8:54 PM, Don Wilhelm wrote:
John,
That is not a consequence of any construction error, but a
consequence of your filter alignment.
When you align a wide filter for either CW or SSB, do NOT CENTER
it. Use Spectrogram and align it so that the low frequency edge of
the passband cuts off above zero frequency (I prefer 200 Hz at the
lowest corner). In other words, an 1800 Hz wide CW filter should
have an audio response from 200 to 2000 Hz.
--
The world is best viewed through the ears of a horse.
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