[Elecraft] KAF2 or KDSP2 for K2 #5287

[Rick Dettinger]

Keith - I do CW only and use the KAF2 and think that it is an improvement.
But not to decrease bandwith, the IF filters handle that chore very well.  A
bandpass or lowpass  AF filter cleans up internal noise that I find tiring.
Another solution maybe headphones that cut off high frequencies.  I
currently use Sony headphones that have good high audio frequency response
so the audio filter is very helpfull.  I like the comfort of the Sonys but
would like CW phones that cut off frequencies above 600 hz. or so.  I also
have a passive outboard bandpass filter constructed from 88mh inductors.
The signal is very clean but the response is actually too sharp for most
use.  I would rather it were designed as a low pass filter.  This would
clean up all electronic noise.    73 - Rick - K7MW  ----- Original
Message -----
From: "Darwin, Keith" <Keith.Darwin at goodrich.com>
To: "Elecraft Group" <elecraft at mailman.qth.net>
Sent: Thursday, April 06, 2006 9:14 AM
Subject: RE: [Elecraft] KAF2 or KDSP2 for K2 #5287


Great reply Vic,

Let's widen the question to make it KAF2 or KDSP2 or NOTHING?  Does the
basic K2's crystal filtering work well enough that you (any of you)
would be happy with no AF filtering or does the AF/DSP filtering add
enough that you wouldn't want to be without it?

- Keith KD1E -

-----Original Message-----
From: elecraft-bounces at mailman.qth.net
[mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Vic K2VCO

Recently, I took out the DSP and put back the KAF2.  After getting used
to missing the noise reduction, I found that I prefer the KAF2.
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