LED lamps becoming cheaper – and noisier

LED lamps are becoming cheaper by the day – and noisier. A recent study by PF0EMC and others shows the spectrum from 3 MHz to 30 MHz.

The first image shows the spectrum with the LED lamp switched off, the second one with the LED lamp switched on. You can click on the images for a better (sharper) view.

Background Noise 1

3 MHz to 30 MHz, LED lamp switched off

Background Noise 2

3 MHz to 30 MHz, LED lamp switched on

So it’s getting worse and worse. Now we not only have to deal with PLC technology, but also with something basic like lighting. While I can temporarily kill a PLC device (it’s against Dutch law to discuss how, don’t ask, you won’t get an answer), I can’t switch off someone’s LED lights.