[Elecraft] 6m QRN on my K3

[Lance Collister, W7GJ]

Good luck to both of us!   I spent several hours out in the car this morning trying 
to track it down, but when I got home again, it was gone :-(   I could have driven 
right by the problem and never noticed it, if it was off at that particular time.  
This is going to be a really tough one to locate!

By the way, I do have to say, my KX3 works great in the car and the NB is the best I 
have ever experienced in the car!  I kept turning off the car so I could listen for 
noise without the engine running.  The only noise source I found was at a medical 
clinic four miles away in the right direction, and then the NB on the KX3 did nothing 
to blank it.   I thought maybe I had found the pesky source, but there certainly is 
no conclusion at this stage.   I will head out on the road again the next time it 
acts up.

GL and VY 73, Lance


On 5/24/2013 4:39 PM, WM3M wrote:
> Lance,
> I have same thing here, but not all the time.
> Mine is much worse when it is dry, when it has not rained in awhile, so I think it 
> is power line noise.
> It is worse on 6 meters.  I think mine is from either a close by power line 
> transformer or power lines rubbing against tree limbs.
> If you figure it out please let me know.  Mine sounds just like your recording.
> Sorry to say nothing I have tried helps much, except rain.
> Good luck.. 73
> Emory  WM3M
>
> -----Original Message----- From: Lance Collister, W7GJ
> Sent: Friday, May 24, 2013 10:40 AM
> To: Elecraft Mailing List
> Subject: [Elecraft] 6m QRN on my K3
>
> Recently, I have started having a really bad wide band noise problem in one direction
> on 6m.   It comes and goes, but is on much of the time.  In the past, the IF noise
> blanker in the K3 has worked well for me, but with this noise, even WID7 setting only
> knocks it down from S7 to S6.  Often the "NB" on the K3 blinks too...I am not sure
> what that means.  The noise level becomes much less when I invoke the DSP NB, but I
> don't like to use that because I am often trying to work weak signal digital modes,
> and I can't have little bits and pieces of the spectrum pulled out.
>
> Is there any way to install some custom NB algorithms into the K3, or does anybody
> else have any suggestions?   I have put a sample of the noise on my website here:
>
> http://www.bigskyspaces.com/w7gj/W7GJnoise.wav
>
> I hope to be able to track down the source with my KX3, but it is not always running
> continuously.
>
> MNI TNX and VY 73, Lance
>
>


-- 
Lance Collister, W7GJ
(ex WA3GPL, WA1JXN, WA1JXN/C6A, ZF2OC/ZF8, E51SIX, 3D2LR, 5W0GJ, E6M, TX5K)
P.O. Box 73
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2m DXCC #11/6m DXCC #815

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