[Elecraft] DSP Noise Reduction and contesting

[Johnny Siu]

Yes, John.  I did find the NR in KX3 is better.  Among all the three elecraft radios, in SSB, the order of usefulness (in decending order) of NR could be of the following:
 
KX3, K3 and KDSP2 in K2
 
I believe the DSP chip set in KX3 could be newer.  The process power of the DSP chip could be easily found in the data sheet of that particular chip set.  The process power, like CPU speed in our PC, does affect the performance (including NR) and design of the radio. 
 
Finding the 'sweet spot' for NR in KX3 is much easier but none of the 32 selections in K3 in NR is really useful for SSB.  Unless for contest (I switch off the NR), I would go back to my Icom rather than K3.  Luckily, I now have KX3 which has a much better NR.
 
 

TNX & 73,

Johnny VR2XMC


________________________________
 寄件人︰ John Reilly <reillyjf at comcast.net>
收件人︰ Elecraft <elecraft at mailman.qth.net> 
傳送日期︰ 2012年11月8日 (週四) 6:12 AM
主題︰ [Elecraft] DSP Noise Reduction and contesting
  
Interesting point about about the DSP in the KX3. I was told at Dayton 
that the DSP in the KX3 was several generations newer than what we have 
in the K3.

With the audio problems Elecraft has had on the board (additional 
daughter card) and the continued continued complaints about audio 
distortion (Sherwood), maybe they will redesign the card with the newest 
DSP generation and offer it to K3 owners as an upgrade. Of course, this 
would lead to some interesting DSP firmware distribution problems with 
different hardware platforms to support!
   - 73, John, N0TA



  [Elecraft] DSP Noise Reduction and contesting

Johnny Siu
Wed, 07 Nov 2012 07:59:57 -0800

Hello Tony,
  
I concur with your observation.  In SSB, the NR in Icom is far better.  Among
all the 8 x 4 = 32 choices in NR settings in K3, I am afraid that none of them
is as good as that of NR of Icom in SSB.
  
The success of the implementation of IF DSP will depend on:
  
1.  the processing power of the DSP chip set;
2.  the ability to write an efficent firmware to optimise the performance of
the DSP chip set.
  
Surprisingly, while I was told that the NR in KX3 was the same as that in K3, I
feel the NR in KX3 sounds better and less artifact.
  
I trust elecraft keeps on looking for ways to improve the NR performance.

  
TNX & 73,


Johnny VR2XMC