Hi Paul,
Triangulation already done (that's how I wound up at the property), and
more importantly attenuation put in place to show the interference drops
off to nothing when you leave the property.
Just FYI,
Don Kirk (wd8dsb)
On Mon, Jan 22, 2018 at 9:27 AM, Paul Christensen <pchristensen@ieee.org>
wrote:
> Don,
>
> Good job so far but you need to triangulate the noise source before
> contacting anyone. Maybe you did triangulate but the video doesn't show
> validation at another location. If you haven't, that means moving to at
> least one other location far enough away to ensure that subsequent nulls
> all
> line-up on the manufacturing building.
>
> Paul, W9AC
>
> -----Original Message-----
> From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of Don Kirk
> Sent: Monday, January 22, 2018 9:15 AM
> To: RFI <rfi@contesting.com>
> Subject: [RFI] RFI every 15 KHz on 160 meters, suspect source is a
> manufacturing facility.
>
> 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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