On 16/10/2021 21:09, Patrick 9A5CW via wsjt-devel wrote:
Hi Reino,
no you are wrong, the filter is wide enough, and I never pressed any
buttons on my old IC706mk2 radio.
I rarely use any kind of filter on JT digi modes, as narrow as I can
go is 1800 Hz and that's only when I have high noise.
Try to select Ref spec and see the difference.
73, Patrik
p.s. i don't know the purpose of the Ref Spec option on the waterfall ;)
Patrik,
you must capture a reference spectrum for you receive equipment before
it can be used to correct for pass-band irregularities. If you don't
know what the purpose of the reference spectrum is then it seems
unlikely that you have measured your receiver reference spectrum.
73
Bill
G4WJS.
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