[Elecraft] K3 APF/Dual PBT

[Fred Jensen]

On 3/14/2015 9:51 PM, W0MU Mike Fatchett wrote:
> The APF will take signals in the noise and make them very readable.

Yes, it is very good once you get the hang of it.  I move the peak just 
a tad off of the center of the passband.  It really seems to make a 
difference ... might be a result of my very compromised hearing, don't 
know..

  It
> is not something you will need to use all the time.

There have been several posts over the time that APF appeared from 
people who use it essentially all the time.  I use it a lot on weak 
signals at the noise, but not nearly "all the time."  Any CW signal 
that's above my noise just stands out on the K3.  APF also seems to help 
with multiple very weak signals in the passband.  My guess is that when 
they're all at the noise, it's hard [at least for me] to actually 
associate a tone frequency to each, and they sort of just merge 
together.  APF will usually yank the one I want out of the muddle.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org