Strangely enough if you set the 1.5Khz filter to engage at a 2Khz DSP
bandwidth you actually see the width change as you adjust from 2Khz
down to 1.5Khz... I'm not sure why you can't set things this way to
get the DSP filter out of the way and allow one to see only the shape
of the IF filter.
I have a request for anyone out there using the Inrad 1.5Khz narrow ssb
filter and who can make a simple .wav recording. Please set width to 1.5Khz
and tune to an empty part of the band and make a 10 second recording of just
band noise with RX EQ flat, and email me the .wav file.
I'll make a
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