--- On Sun, 9/14/08, k8bbm@srt.com <k8bbm@srt.com> wrote:
> a) in the i.f. scheme of 580 and 560, would the 8 pole
> crystal
> filter from the Delta work to replace the 4 pole filter on
> the
> noise blanker board of the Corsair?
No it cannot. The 2.4 kHz filter in the 580 is @~6.3 MHz. The 21x series filter
on the Corsair's NB board is 9 Mhz. Also the 2.4 kHz filter in the 580 is
integral to the IF amplifier board. So it is not one of the standard 28x series
filters. The only 28x series filters in a 580 would be if you added either the
250 or 500 Hz CW filters.
Duane
N9DG
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