[Elecraft] K3:New APF what happened?

[K4IA at aol.com]

I am not too impressed as the hollow ringing sounds like a regenerative  
receiver going into oscillation.  It can help you distinguish the  dits but it 
isn't pretty listening.   I think the manuals need to  catch up with the 
betas so I can get more comfortable with the  adjustments.
 
Buck

k4ia
k3#101
 
 
In a message dated 11/17/2010 9:16:22 A.M. Eastern Standard Time,  
charles9415 at att.net writes:

The new  APF continues to please this CW operator.
Like others, I find it works  better in some situations than others.
But I would not have been able to  copy and work RI1FJ
(Franz Josef Land) on 160m the morning of November  8
without this new tool.

A few suggestions for using it:

1.  Make sure the CW signal is centered in the passband at your
selected pitch,  before engaging APF.  For very weak signals,
I always rely on my ear  to match the pitch, rather than using the K3
SPOT or CWT  features.

2. After turning APF on, use the APF SHIFT (now 5 Hz  resolution)
and/or FINE tuning (1 Hz resolution) to peak the  signal.

3. I've mentioned this before, but I use a Macro to turn on  APF,FINE,
and RIT with one button push (and another Macro to turn off all  these
functions).

73,
Chuck  NI0C
K3 s/n  1061



Larry, K2GN, wrote:


"Yes, it helps on some  signals but not on others.
In fact, due to the "ringing" or hollow sound,  the weak signal is better
copy with normal operations. If have I/II so I  can switch back and forth
quickly.
I use the 400 narrow filter.   NR,NB, etc off.
Anybody have any suggestions that can bring this station up  to what others
are reporting that they  experience?"




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