[RFI] Strange noise on 80m

Jim Brown jim at audiosystemsgroup.com
Tue Dec 13 23:16:19 EST 2016

Hi Martin,

When trying to diagnose things like this, it's always a good idea to use 
the widest possible frequency span, show a long waterfall (let it 
average for as long as practical, make the waterfall at least half of 
the screen height) and set the scale and reference so that the noise 
extends from the bottom of the amplitude display to the top. This gives 
us more clues about what it might be.

73, Jim K9YC

On Tue,12/13/2016 4:54 PM, Martin Kratoska wrote:
> Here appeared a strange broadband noise over whole 80m band. No 
> birdies, sounds like an extreme QRN. Screenshots from my Elecraft P3 
> are here:
> Dec. 4 3503 kHz
> http://www.ok1rr.com/public/80m.png
> today 3537 kHz
> http://www.ok1rr.com/public/80m1.png
> I will be grateful for any advice (possible source, how to locate etc.).
> 73,
> Martin, OK1RR
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