LED lights interfering with the signal to cordless mic transmitter

[Shane]

Greetings,

We have just installed 36 LED19W bulbs in our church auditorium (160 more to come). And while it brightens the room a lot, I am experiencing high interference with the signal from LX2/58 TRANSMITTER it's VHF. Even when the mics are off the transmitter is showing there is a full signal when the LED lights are turned on. Any suggestions as to what would be the next best step in eliminating the static that is being produced would be greatly appreciated! Thanks!

Shane Salmon
Lights and Sound Rookie

[M. András]

crap cheap ledbulbs nothing else

[AG6QR]

Replace the LED lights with incandescents.

If you don't want to do that, replace the LED lights with units that are better designed and manufactured.  I can't tell what country you're posting from, but in the US, the FCC has regulations about how much interference unintentional radiators are allowed to emit, and it is illegal to sell electronic devices that don't comply with FCC part 15.

Depending on how bad the lights are, it might be that putting a ferrite choke over the power wires which are feeding them, with the choke as close to the light as possible, might cut the amount of RF interference being radiated by the power lines.  That's about the only practical mitigating measure I can think of that wouldn't involve actually opening the lights up to see what's inside them.

[tszaboo]

Try wrapping the input wires of the LED lights around some ferrite cores. Put one light close to the receiver, and test it there. Can you put some link to the lamp, so we can maybe come up with some more useful advice?

[kolbep]

Now might be a good time to switch to a Uhf mic. It will be on higher frequency range, and offer better immunity.some receivers can scan for interference, and change to avoid those channels.
May also be a problem if the power supply for the receiver comes from the same d.b., or if any of the power or audio cables for the receiver run close to the lighting circuitd.