[Elecraft] DSP Noise Reduction and contesting

Wed Nov 7 12:16:04 EST 2012

Hi Chuck,
Yep, I agree with you with the NB. At KP2M I could not use our EU beverage
on topband without the NB. It does a good job.
I also use it at home on the high bands when I have a local noise generator
act up. It never seems to run long enough for me to find it other than the
general direction. I think it sees me when I leave the house with my
directional noise finder and stops generating noise. 

73,
N2TK, Tony

-----Original Message-----
From: hawley, charles j jr [mailto:c-hawley at illinois.edu] 
Sent: Wednesday, November 07, 2012 11:33 AM
To: Johnny Siu
Cc: N2TK, Tony; elecraft at mailman.qth.net
Subject: Re: [Elecraft] DSP Noise Reduction and contesting

The NB on the K3 was awesome this morning with S9 buzz on 80M this AM

Sent from my iPad
Chuck, KE9UW
(Jack for BMW motorcycles)

On Nov 7, 2012, at 9:57 AM, "Johnny Siu" <vr2xmc at yahoo.com.hk> wrote:

> 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
> 
> 
> ________________________________
> ¼Ä¼þÈË©U "N2TK, Tony" <tony.kaz at verizon.net>
> ÊÕ¼þÈË©U elecraft at mailman.qth.net
> ‚÷ËÍÈÕÆÚ©U 2012Äê11ÔÂ7ÈÕ (ßLÈý) 7:28 PM
> Ö÷î}©U Re: [Elecraft] DSP Noise Reduction and contesting
> 
> Hi Arie,
> I totally concur with your comments below. 
> Since my first K3 (#311) I have whined about the NR, especially for 
> SSB. NR now works pretty well on CW, but I rarely use it on SSB.
> My NR standard is still Icom. It is simple to use - one knob. And at 
> low levels it takes out the background noise to make listening for 
> long times more comfortable without affecting the quality of the 
> signal as much as the K3.
> When I use NR on CW I use F1-1 and on SSB F5-1.  I can't imagine using 
> higher numbers as the intelligibility, especially on SSB degrades rapidly.
> And yes, if I am going to use NR I use it on the low bands, especially 
> in the summer along with the NB.
> 
> Overall I like the K3 much more than the Icom. But I do like the NR on
Icom.
> 
> 
> 73,
> N2TK, Tony
> 
> 
> 
> -----Original Message-----
> From: elecraft-bounces at mailman.qth.net 
> [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Arie Kleingeld 
> PA3A
> Sent: Tuesday, November 06, 2012 3:30 PM
> To: elecraft at mailman.qth.net
> Subject: Re: [Elecraft] DSP Noise Reduction and contesting
> 
> Hi Pete,
> 
> The NR of the K3 is not a feature that shines. That's why I never 
> tried it in contests. But in a few weeks there's the CQWW CW again. 
> Maybe I will give it a go.
> 
> My two cents worth on the NR of the K3.
> When applying NR I woud expect a better S/N ratio of some kind on a 
> weaker signal (that's why it is called NR). On SSB I never found a 
> setting that increased the S/N ratio or readability of the signal to 
> MY ears (settings
> F5-1 to F8-4)
> 
> CW works better (F1-1 to F4-4)  but I seldom use it. For good S/N 
> ratio I rely totally on the K3 filtering with APF as last resort. The 
> only time I really loved the NR, was when I worked on 160m in the 
> 9L5MS dx-pedition (in tropic thunderstormy Africa) for the whole 
> night. It kept the fatigue of constant static noise away.
> 
> 73
> Arie PA3A
> 
> 
> 
> Op 5-11-2012 23:37, Pete Smith N4ZR schreef:
>> I've read Fred Cady's book and the manual, and I'm still at sea - 
>> anyone have opinions or recommendations about using NR for CW or 
>> phone contesting?  I assume the settings are probably different.
>> 
> 
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net/ Please help support this 
> email list: http://www.qsl.net/donate.html
> 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net/ Please help support this 
> email list: http://www.qsl.net/donate.html 
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
> 
> This list hosted by: http://www.qsl.net Please help support this email 
> list: http://www.qsl.net/donate.html