[Elecraft] K3: noise reduction performance

[Ron D'Eau Claire]

This is a good example of just how subjective "improvement" can be. 

Sure, the "hash" is gone, but it's replaced by the "underwater" warbling
sound so common with highly processed audio. 

Personally, I find that warbling variation in the audio far less pleasant
than the noise. 

Ron AC7AC

-----Original Message-----
> 
> Below are several links to audio recordings of a product I used to own.
It
> is called the BHI ANEM (Mk. II). Sadly, I sold it after getting the K3.  I
> should have hung on to it as it has become my benchmark for NR
performance.
> 
> These are some sample recordings of the ANEM being turned on and off.
These
> recordings are found on W4RT's website
> 
> 20 m SSB <http://www.w4rt.com/BHI/20Mband-ssb.wav>
> 80 m SSB <http://www.w4rt.com/BHI/80conv-ssb.wav>
> 80 m SSB <http://www.w4rt.com/BHI/80Mconv2-ssb.wav>
> 
> I've also compared the K3's NR performance to that of the Icom 756 Pro 3
> which has similar NR reduction properties - albeit not as effective - as
the
> ANEM.
> 
> Perhaps I am being subjective or overly critical, but one thing you can
> easily notice with the ANEM recordings is that speech volume doesn't get
as
> affected as the K3s.  This is really surprising to me as the NR for the
ANEM
> is AF rather than IF like what's used in our radios.  This leads me to
> believe that the ANEM's NR algorithms are more effective in reducing
> background noise while leaving speech unaffected.
> 
> What do you guys think?
> 
> Sorry for the long email. Many thanks in advance for your
ideas/suggestions.
> -- 
> 73 de James K2QI
> President UNARC/4U1UN