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Re: K3 Noise Reduction

Posted by Bill K9YEQ on Apr 30, 2009; 12:24am
URL: http://elecraft.85.s1.nabble.com/K3-Noise-Reduction-tp2742986p2744269.html

Agreed! I have tried a bunch of settings and have some that really suit my
personal preference. Here's what I use on the lowest bands:

PRE off
ATT on

AGC DCY Soft
AGC HLD 0.50
AGC PLS nor
AGC SLP 006
AGC THR 003
AGC--F 120
AGC--S 025
 

Very strong signals may give a little distortion, it could be their signal
is overdriven, but I use the RF control.  Noise from lighting static, and
neighbors very lousy electric fence is not bothersome.  

Hopefully through the sharing of different settings, those who might be a
bit challenged by the flexibility will be helped.

I have saved these settings so I don't lose them when I diddle some more.
:-)


73,

Bill
K9YEQ
K2 #35; KX1 #35; K3 #1744; mini mods
ATS-3B

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of David Gilbert

Is most of this discussion on NR in the K3 from users who would like to
improve the SNR on louder signals for easier listening in noisy
conditions?  

I get the impression we have people expecting different things from
these controls.  The optimum AGC and NR design strategy to improve SNR
for weak signals might be quite a different story than for stronger
signals and noise, even if the SNR's are initially the same.  That might
show up fairly dramatically on a rig with as large a dynamic range as
the K3.

Since I mostly worry about readability on really weak signals I've had a
bit of a hard time understanding what this was all about.  I just use
settings similar to those suggested by W3FPR and K6LL and I've been very
happy with the results ... which are much better than any Icom or
Kenwood I ever owned.

73,
Dave   AB7E

Lee Trout wrote:
> I...............No amount of tinkering with the parameters significantly
improves the NR on the K3.  
>
....................
> I wonder at times if the concept is wrong; perhaps it would be better to
forget about "signal enhancement" and concentrate on the noise reduction.
>
> 73, Lee (K9CM)

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