[RFI] LED fish tank light noise.

[Mike Fatchett]

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