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Re: [RFI] RFI every 15 KHz on 160 meters, suspect source is a manufactur

To: rfi@contesting.com
Subject: Re: [RFI] RFI every 15 KHz on 160 meters, suspect source is a manufacturing facility.
From: "Dave Cole (NK7Z)" <dave@nk7z.net>
Date: Mon, 22 Jan 2018 07:31:09 -0800
List-post: <mailto:rfi@contesting.com>
Hi Don,

Once you find out what the source is, please shoot me a screenshot of it for the RFI snapshot library.

73s and thanks,
Dave
NK7Z
http://www.nk7z.net

On 01/22/2018 06:15 AM, Don Kirk wrote:
Yesterday I tracked down RFI that has been bothering me on 160 meters for
the past year.  The source was a little hard to find because it's not
always on.  I finally had to use my SDR dongle with Ham it up converter in
the car with my small tuned loop to track down the source of the
interference (in order to make sure what I was seeing at home was what I
was actually tracking).  The suspect source is 0.75 miles from my house.
Here is a link to a video showing my efforts to date.

http://www.youtube.com/watch?v=LKf1EWTV8xs

Today I will contact the manufacturing facility that I tracked the RFI down
to in order to take the next step with them.

I will report the actual source of the RFI as soon as it's determined which
might take some time (usually takes time to establish a good working
relationship with the suspect property owner).  Based on past experience it
sure looks like a variable speed drive, but in order to keep an open mind I
try not to guess ahead of time.

Just FYI,
Don (wd8dsb)
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