[Elecraft] 200Hz vs 250 Hz filter

[Eric]

Hi guys,


On 40 the band is very busy over here in Europe. Since my CW skills 
are not the best, a good filter makes it easier for me to "decode" 
Morse in a crowded band. Now I have a 400 8 pole and I think a 200 Hz 
5 pole  or 250 Hz 8 pole  will improve the rx and possibly take some 
workload of the DSP?

But which one to choose, how does one weigh the importance of steeper 
skirts against a filter with less bandwidth? Why doesn't a 200 Hz 8 
pole exist, is there a problem in group delay time, or ringing?

vy 73 Eric PA3CEV


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