[Elecraft] K3: roofing filter configuration settings

RLVZ at aol.com RLVZ at aol.com
Wed Feb 10 00:05:30 EST 2016


A question regarding roofing filter "configuration bandwidth"  settings on 
the K3:
 
The factory default roofing filter "configuration bandwidth" setting  is to 
set the 250hz filter at a setting of "250".  Therefore, the  250hz roofing 
filter will engage at the same time as the 250hz DSP filter. 
However, since the 250hz roofing filter has an actual BW6 of 370hz,  aren't 
there times when it would be more beneficial to have  the "configuration 
bandwidth" of the 250hz roofing filter set to 350 or  400?  
I'm thinking this may be especially true when operating RTTY since the  
average RTTY bandwidth is aprx. 370hz.  Perhaps there are times when  this 
would be beneficial when operating other modes as well?
 
Likewise, the 400hz roofer has a BW6 of 450hz, so perhaps for certain modes 
 a "configuration bandwidth" setting of 450 rather than 400 could be  
beneficial as well?
 
If anyone is wondering where I'm getting the term "configuration bandwidth" 
 from, it's a configuration heading on the K3 Utility programs filter  
configuration page.
 
Thanks & 73,
 
Dick- K9OM
 
 


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