[Elecraft] Filtering RFI from LED & flouresence Dimmer Switches

[Stephen Shearer]

Be careful.  Not all LED's are the same.
Early on I purchased a cheap two-pack at HomeDepot.
Later I was using brand name.  I started to have some noise problems - 
the cheap no-names were causing problems.  I am almost all LED's now.
I started because my YL could hear the CFL power supply buzzing and 
LED's are a higher switching freq she could not hear.

I am a scout campmaster, our cabin (and all lights in camp) were 
replaced with cheap LED's and we have HF noise problems.  I also have a 
dimmer to deal with in our cabin.  I am not sure the dimmer is a problem 
but with the LED's I can't tell.  I am thinking about purchasing better 
LED's and replacing them...  Five to start.  I am not sure there isn't a 
ground issue (or ground loop?) either.  Unplugging the microwave solved 
the problem one time but not the next...

The KX3 is great for tracing LED noise - battery power...

73, steve WB3LGC

On 25-Jan-16 8:22 PM, Kevin Stover wrote:

> I have about that many CFL's to swap out for LED's.
>