I'm arriving at this conversation a bit late, but let me ask this question. I have a relatively newly assembled K-2, working perfectly as far as I can tell. I have the KNB2 assembled and ready to install. After reading these posts, I'm wondering if I should bother to do it. I find, as Ron said, the filters do a good job with atmospheric noise. I don't have anything else unusual here in the way of noise. Sometimes I get line noise, but it's so irritating I usually don't try to work through it. I'll wait it out.

So, should I risk the uninstalling of resistors and cutting of jumpers on a good radio for the improvement offered by the noise blanker?

Jimmy Walker
WA4ILO
Macon, GA


----- Original Message ----- From: "ron" <[EMAIL PROTECTED]>
To: <[email protected]>
Sent: Wednesday, September 27, 2006 5:50 PM
Subject: Re: [Elecraft] Noise Blanker


Hello all;

I push on a CW "filter" and it does the same thing!
I also press attenuate with same results!

Unh? Noise blanker and/or filter does same thing?

Why?
Because filters and NB may "appear" to remove atmospheric noise, but it's still there, because it's attenuated. (There's a little more to that but not here)

Noise blankers work more effectively on man-made noise such as automobiles, lights, motors, hair dryers (pulse type noise) etc.
Not atmospheric noises.

Oh,
after you did that, you probably had to turn up the volume a bit like I did.
It make for easier listening though.

Regardless, I love me K1.
(smile)

Ron, wb1hga

W.D. (Doc) Lindsey wrote:


evening here on 30Metres, and the QRN seemed incessant, I [probably]
accidentally pushed the NB button on a K2. And suddenly the noise all but disappeared. Since then I have come to use it regularly, as there seems to
be a whole lot of QRN here in the tiny subdivision.  But the NB will
normally knock it down to listenable levels.

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