I recommend the 500Hz filter in the second IF and the 8 pole SSB filter
in the first IF. Original Corsairs had a 4 pole filter in the first IF,
but changing this filter makes a noticeable improvement in skirt
selectivity. These filters do the job for me.
The 250 Hz filter is good for extreme QRM/QRN situations, but not
necessary most of the time, unless you do contesting or weak signal
work.
The 1.8 kHz filter is good as a narrow SSB filter or wide cw filter, but
again, not essential.
73,
Bob WB2VUF
"John (N3QT)" wrote:
>
> Group:
>
> What is your best suggested filter configuration for the CORSAIR, the original
> ...not the sequel?
>
> Primary intended use is CW, of course...hi hi
>
> TKS ES 73, John DE N3QT
>
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