[Elecraft] K2 filters charactoristics

[NHarvey113 at aol.com]

I have a Yaesu FT-990 with four filters in it.  They are 250  500 2K & 2.4k.  
In CW mode the
SPOT frequency is centered in each one know matter which one I'm in.  
Hamscope, which has
a frequency presentation, easily shows this.  The SPOT frequency will vary in 
frequency as you 
tune within the frequency band width of the filters and can be heard until it 
rolls off either edge 
of the filter it is in.

I have done the filter alignment on my K2  S/N 4215 as per the procedure in 
the manual and
my numbers match the manuals numbers.  When I look at the filter presentation 
on Hamscope
I notice that all the four filters have the correct band width, but as you go 
from wide to narrow
the change in band width is only changed at the high frequency end.  So if 
you have a SPOT
frequency of say 700 cps. the tone would be fine in the 1.5K B/W filter,  on 
the edge and weak
in the 700cps. filter, and not heard on the remaining narrow filters.  If you 
change the SPOT
frequency to 400 cps. it can be heard on all of the filters.  

What this says also is the SPOT frequency can never be higher than the 
narrowest filter if you
want to hear it.

Is this the way it is using the K2?

Neil Harvey   AC6YO