[RFI] LED fish tank light noise.

[Jim Brown]

On 4/22/2022 8:22 AM, Dave (NK7Z) wrote:
> The blocking ability for RFI goes up dramatically when you wrap turns on 
> a ferrite.

I discovered this in 2005 when doing lab research on RFI to pro audio 
systems, and published it in a Paper presented to the Audio Engineering 
Society that year. I expanded on it in 2007 for the ham community in 
k9yc.com/RFI-Ham.pdf  That paper is in its 7th revision, and has had 
millions of downloads. The concepts were added to the ARRL Handbook more 
than ten years ago.

73, Jim K9YC