Jim,
The effectiveness of the NB and NR will depend on the type of noise you
encounter - that is why the K3 implements both.
The NB works best on impulse type noise. It will have little effect on
noise that makes more of a 'frying bacon' sound. The way it works is to
detect the noise early in the receiver and then blank out a later
receiver stage so the noise pulse is not heard.
The NR works well on that 'frying' sound. In the K3, NR is implemented
as a "signal enhancement" function, rather than reducing the noise, it
looks for patterns that would be found in a real signal and passes those
along while rejecting the rest. If I recall the proper term is 'signal
correlation'.
73,
Don W3FPR
Jim - W6VAR wrote:
I've had my K3 for about a month now and the NR seems to work very well.
However, I have had little luck with either the DSP or IF NB when I hear
what sounds like electrical noise. There does not appear to be significant
differences between any of the settings and I don't detect an appreciable
differrence in audio (which I would at higher levels of DSP).
Thoughts?
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