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Re: [RFI] My RFI battle....

To: kgordon2006@frontier.com, rfi@contesting.com
Subject: Re: [RFI] My RFI battle....
From: Tom Thompson <tlthompson@qwest.net>
Date: Sat, 22 Mar 2014 11:54:29 -0600
List-post: <rfi@contesting.com">mailto:rfi@contesting.com>

I have tracked down many grow light operations here in Colorado. Go to my web site http://www.tomthompson.com and look under Amateur Radio. You will find information on loop antennas for tracking it down and also ballast filters for reducing the RFI. There is also a recording of the RFI before and after the filter is installed. I cannot emphasize enough of for you to get out there with a shortwave receiver and a loop antenna and FIND the source. Listening to recordings is not nearly as helpful as just tracking it down. I have tracked down 9 grow operations so far of which 5 are still operational. I have mitigated all 5 with the filter described.

The initial measurements that Larry, W0QE, and I made several years ago were instrumental in Mike Gruber making his excellent measurements and filing a complaint with the FCC, so I have had a lot of experience with this. Again...don't write about it, FIND IT!!

Tom   W0IVJ

On 3/22/2014 9:38 AM, Kenneth G. Gordon wrote:
After further "research", I am beginning to wonder of one of my neighbors
has begun a "grow operation".

One reason I am beginning to lean that way is that Washington State just
passed a law legalizing the use of pot, and I live in Moscow, Idaho which is
only 7 miles from the town of Pullman, Washington, which houses
Washington State University, and in which town there has recently been a lot
of "discussion" about how to implement Washington's new law.

Pot use and sales is (still) illegal in Idaho, but I can visualize some
"entrepreneur" firing up an operation here to make some money over there.

Does anyone have a recording of the interference caused by those "grow
lights" that the ARRL was so up-tight about?

I hope to finally begin an attempt at DFing this obnoxious garbage today.

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