[RFI] LED RFI solved

[Michael Aust]

Great video MikeWB6DJI 

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 On Saturday, August 22, 2020, Jim Brown <jim at audiosystemsgroup.com> wrote:

Thanks for posting, Steve. In today's world, a large fraction of RF 
noise is electronic noise, NOT power line noise. My tutorial app note 
addresses this, how to tell the difference, how to chase both types of 
sources. The two links cover the same material, but the second, slides 
for a talk, is newer and includes more graphics.

http://k9yc.com/KillingReceiveNoise.pdf
http://k9yc.com/KillingRXNoiseVisalia.pdf

73, Jim K9YC


On 8/22/2020 11:35 AM, VE6WZ_Steve wrote:
> A church nearby to my QTH decided to install an LED string to the church steeple cross.  The RFI was very bad on 160m.
> The problem was a very dirty Hanley LED driver switch-mode supply.  Replaced with a Mean Well unit and now all is quiet.
> 
> I made a YouTube video showing the isolation, testing and solution.  Some of these LED drivers are EXTREMELY noisy, but they don't need to be!
> 
> https://youtu.be/tvjRwZTNLHs <https://youtu.be/tvjRwZTNLHs>
> 
> 73, de steve ve6wz
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> 

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