[Elecraft] K3 NR

[Grant Youngman]

It's remarkable how on any list for any radio, NR is the bugaboo.   
Everyone expects magic.  There ain't no stinkin' magic.   To Bill's  
point, it is far less effective -- to the fact of almost being  
unnoticable at relatively narrow CW bandwidths.

Having used virtually every 3rd party box known to man in the search  
for nirvana,  and been in on much of the use, discussion and some  
analysis of another high end radio's NR function, I find the K3 NR to  
be extremely effective on SSB and CW, when the conditions (be they  
band or radio settings) are right for NR to be effective, which they  
are not always.  As for the conjuration of it all, it's just dynamic  
filtering, not something mystical  (that is what at LMS algorithm does  
-- there's nothing mystical about LMS, either).

Grant/NQ5T



> It's interesting to hear the differing opinions on this subject.   
> While I found the NR on the O7 to be good, it wasn't exceptional.  I  
> thought the NR function attenuated the desired signal, even at the  
> least aggressive setting.
>
> The best DSP NR I've heard came from the Omni 6+ as well as the LMS  
> algorithm used in the W9GR DSP box.  Both DSP NR occurs in these  
> devices at the AF level, rather than I.F.
>
> Just curious, does the K3 implement a true LMS algorithm at I.F. in  
> one of its menu-selected NR routines?  Lyle?   I've never been too  
> impressed with some of the other "contour optimized" NR routines  
> like that used in the FT-1KMP series.
>
> Paul, W9AC
>
>
>
>
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