At those levels, there is little doubt in my mind that this exceeds the FCC
limits for emissions. Let me know what model number this is and we can get one
and test it.
Ed, W1RFI
-----Original Message-----
From: RFI [mailto:rfi-bounces@contesting.com] On Behalf Of Don Kirk
Sent: Monday, September 29, 2014 1:25 PM
To: RFI
Subject: [RFI] 160 meters RFI caused by low voltage bookcase lights
Late last week I encountered interference on 160 meters which was repeating at
41 khz intervals, and this morning I was able to track the problem down to low
voltage bookcase lights at my neighbors home which is 430 feet away. I created
a website to document this case which includes a link to a youtube video that
contains receive audio of the noise, and my simple website URL is
http://sites.google.com/site/bookcaselightsrfi/
The signal was S9 on 160 meters (approximately 15 dB above my noise floor when
using a 500 hz receive filter), and it could be heard up into the 80 meter band.
We (my neighbor and I) will now dig into his low voltage lighting system to see
what we can do to eliminate the interference.
Just FYI,
Don Kirk (wd8dsb)
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