[Elecraft] off to Dayton! 1 more time (sigh) on Roofing filters

[DOUGLAS ZWIEBEL]

Readers would do well to actually read the posts or do a SEARCH on the
archive.

Will you have an issue with only the stock roofing filter?  Eric
already gave us the answer with parameters.

"If  you only use the 2.7 kHz stock filter for CW or data operation
you will  be significantly desensed once signals within that filter's
bandwidth  exceed about S9+25."

That means that you have to park within 2.7 kc of another guy (cw or
data) who is S9+25 on the K3 (calibrated) S meter.  How many of you
would sit there and fight it out?  If you're not one of them, then 2.7
is FB for you.

http://www.ac6rm.net/mailarchive/html/elecraft-list/2007-05/msg00590.html

de Doug KR2Q