Vic,

The NR algorithm always works better with a wider bandwidth.  It is simply 
building a  not-too-narrow filter around what it perceives to be the signal.  

Glad you found it helpful!

73,

Lyle KK7P 

Sent from my iPhone

> On Feb 22, 2020, at 10:38 PM, Vic Rosenthal <k2vco....@gmail.com> wrote:
> 
> I’ve never found the K3 NR very useful. But this morning, I was trying to 
> hear VP8PJ on CW through a humongous wideband radar (or something) signal 
> that was running over S9. The IF NB didn’t do anything against it, and the 
> DSP NB just helped a little. I found that opening up the bandwidth to about 
> 2.2 kHz and setting the NR to F1-3 knocked the radar down enough that I could 
> copy him!
> Unfortunately, it didn’t make him able to hear me over the loud US pileup, 
> but I was surprised that the NR was so effective in this situation.
> 
> Victor 4X6GP 
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