One aspect that Doug leaves out, however is that of audio quality.

Signals will sound different with different filtering.

Using a 2.8 XFIL and DSP to make it 1.8 KHz, I found SSB signals to be
a bit "tinny" and hard sounding.

I installed a 1.8 KHz XFIL, and found the audio quality to be
improved.  It was quite noticeable as I turned the width control
downwards to where the 1.8 XFIL kicked in - the audio experience
sounded like a continuation of what I was hearing at 1.9, only
(obviously) an itty bitty bit narrower.  The tinniness and harshness
was not present.

All IMHO.

73,
Steve NN4X





On Sat, Jul 12, 2008 at 11:45 AM, Ron D'Eau Claire <[EMAIL PROTECTED]> wrote:
> Doug, KR2Q, presented a superb explanation of why one needn't sweat too much
> over the "roofing" (first I.F.) filter in the K3.
>
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