don't you think that would get complicated and of course you'd have to do
the opposite for USB (wouldn't you?). The way it is now, the rig is not
second guessing what your trying to do and your not having to figure out
what its doing.
just my 2c worth
On 03/03/2008 05:40, Tony Fegan VE3QF
Hi Don,
Thanks for the reply. I do use the Hi-Cut for reducing from 2.7KHz
to about 1.8KHz with no problem. When you go much narrower the
intelligence is improved by raising the low cut frequency (especially
with low side QRM). Now you have to juggle with the Lo and Hi-Cut to
squeeze out
Does reducing bandwidth using the Hi and Lo cut invoke any roofing filters
as the appropriate bandwidth is reached?
David
G3UNA
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Does reducing bandwidth using the Hi and Lo cut invoke any
roofing filters as the appropriate bandwidth is reached?
Yes, whenever the DSP filter settings result in a bandwidth equal to the
next narrowest crystal filter, that narrower crystal filter kicks in.
That's why reducing HI CUT works
Don,
At present the filter centre frequency is unchanged as the filter
Width is reduced. If the centre frequency on SSB could be reduced by
half the change in bandwidth then the LO-Cut frequency would remain the
same. This is the same as how the Hi-Cut works. If we now add another
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