[Elecraft] K2 question on options

[Bill W4ZV]

R Thompson wrote:
> 
>      I would like to hear from someone who has the filter, what their
> impressions are.  I'm not overly impressed with the DSP as I've
> experienced it on my IC-703, but it can make a difference even if it no
> longer sounds natural.  So I'm leaning towards getting the filter.
> 

I have the KAF2 but to be honest I seldom use it.  For some reason I've
never found audio filters to be of much help.  My experience goes back to
the Autek QF-1A, SCAT filters, many different outboard DSP filters, etc. 
I'm sure they work well for others but I've never found them to work for my
ears which seem to prefer wider audio (~350 Hz) before reaching my
ear/brain's DSP stage.  One exception is the K3's APF which is occasionally
helpful under certain conditions.

Here's some more information on the KAF2 which might help you decide.  I
used KI6WX's standard AF1 and "low-ringing" AF2 values in my unit:

http://home.pacbell.net/johngreb/kaf2_filter_modifications.pdf

73,  Bill





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