Hi Ed,
They had several more lights of the same type that were not producing
RFI, so I think it was just a case of a ballast going bad.
Tom
On 1/19/2015 10:02 AM, Hare, Ed W1RFI wrote:
A great lesson, Tom, and thanks for sharing it.
Do you have the model number of the offending device? I'd like to get
one and test it to see if it meets or exceeds the FCC conducted noise
limits.
Ed, W1RFI
-----Original Message-----
From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of Tom Thompson
Sent: Saturday, January 17, 2015 12:48 PM
To: RFI@contesting.com
Subject: [RFI] RFI Success
In the fall discovered that my noise level on 20 meters had increased by
about 18 dB above my normal band noise. I suspected a grow light
situation so I took a loop reading and headed east where there is a
neighborhood with a lot of rental properties. I had only walked a few
hundred feet when I noticed the loop pointing more to the north. A few
minutes later I had the RFI pin pointed to the south east corner of a
commercial building just to the east of me. The particular suite was a
dentist office. I introduced myself to the receptionist, explained the
situation, and left my contact information. A few weeks later, having
heard nothing, I revisited the office and left another message. After
the third visit I contacted the building owner who said he would contact
the dentist and have him contact me. A month went by with no contact,
so I called the building owner again. He told me that the dentist had
emailed him back that he felt harassed. The building owner suggested
that I email the dentist directly. I spent about 30 minutes composing
an email that was as diplomatic as I could make it emphasizing that we
were neighbors and that I wanted to work with him to remedy the
situation. A few hours later I received a very cordial email from the
dentist suggesting a time when we could meet. I met with him the next
day and he was very nice and cooperative. Within about 10 minutes of
walking around his office switching off light fixtures, I located two
under the counter fluorescent fixtures which were causing the RFI. He
agreed to leave them off until he could get them fixed or replaced. My
20 meter RFI is gone.
I guess the lesson learned here is to be patient and not assume an
aggressive stance even when one might assume the other party is on the
defensive.
73 Tom W0IVJ
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