[RFI] LED Christmas Light RFI

[David Robbins]

it wasn't Christmas lights, but I had a screw-in Chinese no-name LED bulb that made hash all over hf.  obviously powered by an unfiltered switching supply.


Dec 1, 2013 11:59:45 PM, kd7jyk at earthlink.net wrote:

"Does anyone have experience with RFI from LED Christmas lights? Are some
better than others? All bad? No problems?"

I have played with LED lighting to replace incandescent since the mid-80's
I have never heard RFI from an LED, however, LEDs that have controllers, for
various functions, flashing, chasing, et cetera, I've heard several city 
blocks/large fractions of a mile from the light string. The noise wasn't 
from LEDs, but from the controller box circuitry and the string wire acting 
as an antenna. This was especially noticeable on HF.

Kurt

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