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LED Light Radio Interference (RFI/HF) - Solved
#1
Seems like a lot of people are suffering from interference caused by LED lighting.

In my situation, the interference was so bad that I could not use my Ham Radio when the LED Downlights in my downstairs Workshop were turned on.

I didn’t really concentrate on the LED Lights as such because I had bought a bunch of 9W and 12W LED Downlights from the same supplier and within a few weeks of each other.
I replaced ALL the lights in the house with these.
All lights are 12-volts and were installed with their supplied 220v/12v transformers.

It was ONLY when I turned on the Workshop lights downstairs (three of them) that the interference started.
The Workshop has its own Power Distribution Fuse Box and I was starting to suspect earthing issues.
Checks revealed no faults so I continued Googling the problem which many are suffering from.

Suggestions of using Ferrite RF Choke rings on both the LED Transformers (at various locations) and the Ham Radio equipment made little or zero difference (and I am angry at those who even suggest it).

Many suggested Google comments make mention of CE-marked Transformers – but because I am NOT in the USA and that CE does not apply to UK, Australia and New Zealand I didn’t think much of it.

Today I removed all three LED Downlights and their Transformers.
To my horror the first thing that I noticed was the rattling inside the Transformer Boxes when I shook them!

Immediately suspecting a “quality” issue I replaced all Transformers with other ones I had lying around that DIDN’T rattle!

PRESTO! Problem solved and NO more Interference – nada, zip, zero, zilch!

Here I share with you the photos of the bad (obvious from their “rattling” and foreign language) and the good (one marked CE and the other with more intellectual information but no CE mark).

The culprit:
   

Solved with:
   
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