[Elecraft] K3 5 pole vs 8 pole filters - attenuation in the passband

[lstavenhagen]

Well, yes, to spill the beans on this: it was when I was reviewing the filter
gains on my K3 the other day that this came up. I built my K3 with the stock
2.7khz 5 pole filter in FL1 and an 8 pole 400hz in FL2 - however, to even
out FL1 and FL2 requires the gain to be nearly maxed out for FL2 (8 db gain,
IIRC). My K3S, however, has 8 pole 2.8khz and 400hz in goth FL1 and 2,
respectively. But they're almost dead even in terms of attenuation with FL2
set at only 2 db gain.

So that led me to wonder if the 5 pole in my K3 had less attenuation in
general, accounting for the difference. Just a curiosity for me.

73,
LS
W5QD




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