[Elecraft] K3 NR triggering

[Lyle Johnson]

> Thinks like....If F1-1 doesn't work, do we go to F1-2 or F2-1 or should 
> we skip a few F's.

Depends on the noise, the signal, the levels and the nature of the 
artifacts of NR you best tolerate.  F1-x builds sharper filters, while 
F4-x typically has more attenuation...

> Should we turn NR off then back on every time we make 
> a change?

It usually won't adapt any faster if you do.

> Does changing NR settings while receiving a cw signal matter 
> or should one change settings with no signal?

Since you are trying to maximize the intelligibility of the signal, I'd 
only adjust it if there is a signal.

I normally leave mine at F1-1 unless there is a good reason to change 
it.  But that is for my antenna (3 element SteppIR), noise level 
(rural), band (20m daytime), mode (SSB), AGC settings (default THR and 
SLP) and typical signals (weak to moderate) I encounter here.

73,

Lyle KK7P