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[RFI] Help with tracking power line noise

To: RFI List <rfi@contesting.com>
Subject: [RFI] Help with tracking power line noise
From: David Winarsky <david@winarsky.com>
Date: Sun, 21 Feb 2016 13:41:08 -0800
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>
Hi everyone,

I’m a long time lurker first time poster. I’ve been having serious noise issues 
at my location and have been on a quest to track them down.  The noises are 
broadband “buzzing” which are loudest across 40 meters, but go all the way to 
10 meters.  

I bought the Tecsun PL-660 and built the loop antenna described in this article 
(http://www.arrl.org/files/file/RFI/Thompson%20Noise.pdf) and also have a Yeasu 
FT-60R and an Arrow 440 handheld Yagi.

I went around the neighborhood walking a circular block around my house and 
believe I tracked, with the loop antenna and Tecsun, 6 different poles 
producing the loud buzzing .  However, when I went back out with the Yagi and 
my FT-60 tuned to 440 mhz on AM, I couldn’t pick up the noise.

Is it common for a pole to produce noise on 40-10 meters, but not be able to 
identify it on 440 mhz?

Also, one of the noise sources seems to be emanating from a utility service 
drop to a residence.  I haven’t been able to get close because it is on their 
property, but the service drop seems to be going through a dense orange tree.  
I left a note with the neighbor hoping to investigate together.

Thanks everyone for help and I appreciate all the great advice that has already 
been posted on this list.

David
NY6W  
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