Ron,
I haven't heard any ringing at all in our 200-Hz filter. It's quite a
bit narrower than the 8-pole 250-Hz filter down to -40 dB or so, and
it's the filter I used about half the time for CW and nearly all the
time for narrow data modes. The 8-pole filter has steeper skirts, as
you'd expect. But the DSP provides the ultimate attenuation anyway.
73,
Wayne
N6KR
---
http://www.elecraft.com
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