[Elecraft] K3 Noise Reduction question

[Fred Jensen]

I operate mainly CW and while the NB is very effective for me on CW, 
I've never seen much advantage to the NR at narrow CW bandwidths.  I had 
occasion to be on SSB this week attempting to work several SOTA summit 
activations, and tried the NR.  At the wider SSB BW, it made a great 
difference.

With NR however, even at F1-1 [which I think means least aggressive], 
while the nasty line noise really fell, the SSB signal acquired a 
profound echo which made it very hard to understand.  I'm running FW4.39 
and whatever DSP came with it.  Is this reverberation [it's more like 
that than a distinct echo, like talking through a long pipe] normal? 
The further "up" the NR scale I went, the more pronounced it got, and 
beyond F1-4, the signal was indecipherable.

Full Disclosure:  My hearing sucks and has since one night in 1965 on 
the other side of the planet, so me telling you what something sounds 
like can be somewhat of a joke.  I can't use my hearing aids under my 
headphones, so I run the AF gain high ["afterburner roar" or close], but 
the reverb effect definitely is controlled by the NR.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2012 Cal QSO Party 6-7 Oct 2012
- www.cqp.org