O. Johns wrote:
Ah, my god, are you lucky if you don't need NB. I live in the center of
San Francisco, CA, and every tom dick and harry and every restaurant
pizza oven and every cell phone tower (one block away) and every
neighbor's numerous wall warts are spewing out RFI. S-meter readings
In general, those sources require noise reduction, not noise blanking.
The K3 has both, but note that noise reduction is a difficult problem,
and there are severe limits on what can ever be achieved.
mean nothing. It is S units (if any) above the man-made noise that
matter. When I finish my current project, a balanced antenna tuner,
then I will assemble my new K3 and we'll start on the NB and NR and AGC
and AFX merry-go-round. The K2 noise reduction is almost useless
against all this stuff, so I hope the K3 does better.
Unless you have one of the audio filters, you do not have noise
reduction, on the K2, only noise blanking.
--
David Woolley
"The Elecraft list is a forum for the discussion of topics related to
Elecraft products and more general topics related ham radio"
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