[Elecraft] Roofing filters and DSP bandwidth tuning

[NJMike]

If I understand it correctly, as you turn the bandwidth knob
counterclockwise, the filter narrows.  At some point, it hits the next
roofing filter and then....narrows more?  Just trying to understand so I can
get the right filters.  Rig A (below) is what Elecraft recommends for my
operating profile.

What would be the difference between the following three examples, as far as
how narrow the bandwidth could actually be adjusted?

Rig A with 2.8, 2.1, 400, 250, 200 filters
Rig B with 2.8, 2.1, 400, 250 filters
Rig C with 2.8, 2.1, 400, 200 filters



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