[Elecraft] Is NR effective on ssb?

[juergen]

Hi Oliver

If you like experimenting  try this product. I have been using it on the low bands for a while now, and I am very impressed. I have not found a radio with an inbuilt DSP that will beat it.


http://www.ing-michels.de/hamradio.html

John

--- On Mon, 2/15/10, O. Johns <ojohns at metacosmos.org> wrote:

> From: O. Johns <ojohns at metacosmos.org>
> Subject: [Elecraft] Is NR effective on ssb?
> To: "Elecraft_List" <Elecraft at mailman.qth.net>
> Date: Monday, February 15, 2010, 2:49 PM
> Folks,
> 
> I wonder if anyone has an A-B comparison audio recording
> that shows a SSB signal that is UNINTELLIGIBLE with NR off
> become INTELLIGIBLE with NR on?   (Note NR,
> not NB which is a different animal altogether.)
> 
> Maybe it is my ultra-high-noise urban environment, but I
> have not found any combination of settings of NR, RF gain,
> AGC, etc., etc. that lets me copy a SSB signal that I can't
> already copy without NR.  And I use the good Yamaha
> headphones that have been discussed on the reflector. 
> My theory is that S8 noise flummoxes the NR algorithm so
> much that it actually becomes a hindrance.  Maybe it
> can't really distinguish high noise from voice.
> 
> This is not to criticize Lyle or the K3.  I imagine
> that these algorithms have their limits no matter what radio
> they are run on.
> 
> 73,
> 
> Oliver Johns
> W6ODJ
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