[RFI] LED fish tank light noise.

[Mike Fatchett]

This morning the noise is back.  Same light.  Tried a snap on on the 
other side of the controller which did not work.

W0MU

On 4/21/2022 11:36 PM, Mike Fatchett wrote:
> I ran into a new noise here.  It started on 15m through 40m on 
> antennas close to the house.  The noise seemed to come on in the late 
> afternoon or evening.  It was very evident when I turned the antenna 
> toward the house.
>
> The noise almost sounded like an am signal in the noise.  KOA radio 
> with 50k watts is about 5 miles away so they can get into lots of 
> things.  There were distinct mounds about every 20kcs and an overall 
> hash on the flex that took the noise floor from -120 to around -110.
>
> The only thing in the house that I could think of are my fish tank 
> lights.  I have 3 tanks all with the same light or similar style and 
> design.  I pulled the plug and the noise is gone.   I narrowed it down 
> to the tank that is in the shack.
>
> The brand is Hygger and I bought it from Amazon.  It is an led light 
> bar.  I wrapped a number of turns through a snap on ferrite and 
> plugged it back in.  So far so good!  The cord is a wall wart that 
> plugs into the control unit which turns the light on, timer etc.    42 
> watts  215 led bulbs.
>
> I can attempt to detail this further with recordings and screen shots 
> if needed.
>
> I just thought I would pass this along.
>
> Mike W0MU
>