[Elecraft] KAF2 performance???

[Timothy A. Raymer]

David,

I would venture to guess a bit of tweaking will help the CW filters do what 
you want.  If you haven't used Spectrogram and an RF noise source, I would 
recommend it.

But the two filters do different things.  So, another way of answering your 
question is:  It depends.  The audio filter reduces hiss, and AF1 and AF2 
are different audio bandwidths.  The CW filters limits the amount of RF 
that flows through the rest of the radio by restricting the amount of RF 
energy that flows through the narrow bandpass of the filter.  Some on the 
forum have reported variations in Crystal filter settings that can change 
with how warm the temperature of your K2 is.

Hope this helps a bit.  Should spark a few additional comments from others 
that have seen the same thing you have.

Tim Raymer
K2 #1383

At 15:39 06/05/2002 -0400, David E. Shelton wrote:
>Hello again,
>
>Just got through using the KAF2, audio filter, working a few QSO's on 30M
>and noticed that my KAF2 performs better in AF1 than AF2 and that it is also
>performing better with the wider xtal filter settings of 1.6kHz and 0.7kHz.
>Does this sound right or do I need to do some more aligning of the audio
>filters with the xtal filters.
>
>Tnx es 73,
>David, N4IN

Timothy A. Raymer               <traymer@mail.state.mo.us>
Missouri Department of Health   <raymet@dhss.state.mo.us>
and Senior Services