[Elecraft] K3: Real world use of 1.8 filter (oops)

DOUGLAS ZWIEBEL dougzzz at gmail.com
Sat Jan 14 09:28:00 EST 2012


I would like to change one word in the following paragraph.   In the
last sentence, "If the SSB band..." change the word " If " to " Unless
"

Sorry about that.

de Doug KR2Q

I have to wonder out loud how many guys are "feeling" the DSP filter
width impact when they go from their 2.7 to 2.1 to 1.8 on SSB versus
how much of that is improvement in IMD reduction specs.  For 99%, they
probably are "feeling" the narrower DSP filter impact (which means the
narrower roofing filter has essentially no impact at all).  If the SSB
band is packed with wall-to-wall very, very, very strong signals, then
I'm betting that the roofing filter BW just won't matter for the vast
majority of ops.


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