I agree that the signal doesn't pop out anymore with 4.22, but I think it is 
due to the change to 5 Hz tuning.  It is harder to hear the peak in the 
signal with the 5 Hz steps in the Shift tuning.  I think we should go back 
to 10 Hz per click.  Just my opinion.

Dave, N4QS

----- Original Message ----- 
From: "John Seney" <john.se...@gmail.com>
To: "Igor Kosvin" <k.i...@comcast.net>
Cc: "'Elecraft Reflector'" <elecraft@mailman.qth.net>
Sent: Saturday, November 20, 2010 2:16 PM
Subject: Re: [Elecraft] K3 APF Effectiveness


> Hi All:
>
> I have the same experience as Igor. There is an APF sweet spot that either 
> moved or
> disappeared.
>
> Would it be helpful if there was a GUI that let us save, load, share, and 
> see all of
> the various K3 parameter settings that we are adjusting?
>
> On Nov 17, 2010, at 11:53 PM, Igor Kosvin wrote:
>
>> Sure, you are right, but you would not deny that using same set of
>> parameters (NR/NB, WIDTH, PITCH, RF, etc) the APF circa 4.17 and 4.22 
>> should
>> give very similar results since the code of APF remains the same. After
>> playing few days with 4.22 I find myself having to turn off APF to better
>> receive weak CW stations. I don't have explanation for this. With APF on 
>> I
>> find it difficult to distinguish dits and dahs of weak signals. With 4.17 
>> it
>> was much better for me. That should be apples-to apples comparison, I 
>> think.
>> I don't claim to be expert though, listening is very subjective IMHO.
>>
>> Regards,
>>
>> Igor, N1YX
>
>
> 73,
>
> John Seney
> ARS WD1V (fn42gw)
> 603 785-2413
>
>
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