[Elecraft] APF

k5nu k5nu at ainternet.biz
Tue Dec 7 15:18:33 EST 2010


Fellow Elecrafters,

Many of you have praised the current version of apf.  Since I spend 99% 
or more of my time listening for weak signals on 80m, it should be a 
very useful adjunct.  How do you utilize the apf - with NR on or off?  
My particular preference for listening keeps the NR on - never off.  I 
use 1-3 or 1-4 on cw and find the apf quite uneffective with the NR on.

That said, I have found very few occasions when the NR/NB combo needs 
anything else and am quite happy with the listening experience.  
However, if I could find a method where apf could help even more, I 
would welcome it.

I use diversity rx always, NR on always,  RF gain about 2-3 o'clock on 
both rxs, AF gain at approx. 12 o'clock.  Incidently, I very seldom use 
a filter narrower than 2.4kHz unless in a contest situation.  Just fits 
my ears/brain filter.  Antennas for rx- 4 square/beverage.

Any input would be appreciated as at present I try apf but find it of 
little use at these parameters.  Of course I am not complaining as I 
really enjoy the K3's low band abilities.

73, Mike K5NU


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