LED Lighting RFI

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  • Updated 2 months ago
This is not a problem with the radio, but rather a problem with LED lighting. This video dramatically demonstrates the result on the waterfall caused by the LED lighting in the bathroom.

http://youtu.be/rDCXPNwajro

About 15 seconds into the video I switch on the bathroom lights. The Modernforms LED lights in the bathroom interfere severely with the radio. 
I have other LED lights in the house that do not interfere whatsoever.

My recommendation would be for ham radio operators to steer clear of Modernforms lighting until this issue is resolved.
http://www.modernforms.com/products/278
It is a shame because I otherwise do like the lights.
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Robert -- N5IKD, Elmer

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Posted 4 years ago

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Photo of John n0snx

John n0snx

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I have the same issue with my Kitchen led lights....
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Burt Fisher

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I have the same issue with my desktop computer except I really need it with the Flex
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K1UO - Larry

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Burt ,

Each time I had a computer generated noise problem it was caused by the lack of filtering in the lower cost power supply that came supplied with the case.  Changing out to a decent quality and filtered supply always fixed the problem.  I assume you discovered the problem with the desktop by using your flex with a laptop or some other computer.   OR your comment was just being facetious?  In which case, feel free to disregard this possible solution.


Thanks to Robert for sharing his LED rfi discovery.. Noise pollution is creeping higher and higher each year with the introductions of new products into our environment.

(Edited)
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Burt Fisher

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My laptop is clean, no birdies etc. Even when the computer is "off" there are still some birdies unless I remove AC from the power supply.
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Robert -- N5IKD, Elmer

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I fixed the kitchen under cabinet LED issue by changing the "Driver". I need to do the same with the bathroom lights, but in may be tricky to find one that fits in the box behind the lights.
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Lee

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I only get a ! instead of a video??

Did you officially report this MFG issues to the FCC and of course ModernForms?

Ask for your money back.  Send all this crap back to them and get your $$ back.

Once I had Toshiba pick up a $3,000 TV that was causeing lots of RFI and give me a full refund.

They did exactly that.

73,


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Robert -- N5IKD, Elmer

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Lee,
I think the ! is an error from the makers of this forum, try it again. The video has 46 views some some people are getting through.

I plan to report the issue to Modernforms on Monday. We will have to see how the issue unfolds from there.
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WQ2H - Jim Poulette

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Hi Robert,
Late to the party as usual - but thank you for that. The video was unbelievable - until yesterday. I just got a pair of desk-mounted lights (LED). One was positioned about 2 meters from the radio, the other maybe 4 meters. When I turn the closest light on - I get the same thing (refer to image - the green hash across the waterfall). The other light had no effect what-so-ever.

So.....I exchanged the positions of the lights. Surprise, surprise, distance had no effect; the bad one now 4 meters away gave me the same hash - the close one no effect. I'm guessing I can chalk that up as a testament to quality control. I brought it back and got a quiet one. Moral of the story: all LED lights are not created equal.

73 Jim, WQ2H
(Edited)
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Norm - W7CK

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This is useless information unless you publish the manufacture and model of the LED lights that are causing the issues.  I have a house full of LED lights and do not experience anything like this.  I run my radio equipment off of battery power and have disconnected all power to the house, watched the waterfall and listed to the rig while turning the house mains back on.  NOTHING, NADA, NO INTERFERENCE on any ham bands.  There is some slight issues from my modem but it does not occur in the ham bands.
What lights are you using.  Maybe you have a bad ground or other bonding issue in your bathroom?