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

[Gary Smith]

Interesting timing for this thread. A friend wants to buy my K3 and 
fit it with the most advantageous filters for his contesting methods.

I remember when selecting filters back in 2009, the consensus was the 
8 pole 250 Hz filter was more desirable than the 5 pole 200 Hz 
filter. Now its 7 years from back then, I don't know what is the 
current consensus. I bought the 8 pole 250 for the main & Sub Rx 
boards.

Which filter between the 5 pole 200 & 8 pole 250 Hz filter is 
currently the most desirable for contesting conditions?

Thanks & 73,

Gary
KA1J


Hi all,
Quick question - do the 8 pole roofing filters have more attenuation, 

as a
general rule, in their passbands than the 5 pole? Long story on how I
arrived at this question in terms of troubleshooting something I've 
noticed
in my K3 and K3S, but I'm just curious if there's supposed to be a
noticeable difference?

My assumption is the 8 poles are going to have a little more 
attenuation
than the 5's, perhaps by as much as 3 db or more. Is that the case 
that
ya'll have noted?

I've looked through the list archives and haven't found a prior 
discussion
of this, so just wondering.

Thanks es 73,
LS
W5QD



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