This is quite surprising. I've completely re-fitted out my boat with 20 odd MR16's from Lustrumlight of various flavours (21/60 LED warm white, cool white) and seen no problems with rf interference with marine VHF/FM/DAB and have no doubt that these are of Far Eastern origin.I did some research on this and came across a lot of boat people complaining that after they had fitted LED lights in their boats they had problems with their comms radios. It would seem that it is the cheaper Chinese made LEDs that cause the biggest issue. It is because of the use of cheap switching power supplies that don't suppress EMI properly.
Interesting article here
Radio interference from LED lighting | EMC and Regulatory Compliance
i also have just been through all these aledged fixes to which none of them worked, except the last one. i have 9 LED lights in the kitchen that ran on 3 electronic trannys perfectly but pee'd the radio and DTV off when they were switched on. only on one TV channel and all DAB stations were affected. it seems only the larger groups of lamps do this (6 or more ) to which i fitted one 12v 10A switchmode DC power supply and hey presto no more problems. in saying that the 6 in the main bedroom dont affect either the TV or radio.... go figure
You will have to excuse my ignorance, but am I to assume that you are simply running your 12v LED lights straight off the power supply (no transformer) also am I to assume that this is the same sort of thing that is used in PC's?
It makes sense that they would work like that after all they only need 12v to operate.
So if one had a spare 300w computer power supply all one would need to do would be to fit a 3 pin plug to the light cable in the ceiling, then plug the PC power supply into there, then wire up the LED downlights to the 12v outputs, of which there are usually at least 6.
Having said all of that, it seems that most switched mode power supplies can be a source of EMI, hence the issue with the transformers used for the LED lights. The ATX PC powersupplies, do have an EMI filter.
Sounds like a nice weekend project coming up.
You will have to excuse my ignorance, but am I to assume that you are simply running your 12v LED lights straight off the power supply (no transformer) also am I to assume that this is the same sort of thing that is used in PC's?
It makes sense that they would work like that after all they only need 12v to operate.
So if one had a spare 300w computer power supply all one would need to do would be to fit a 3 pin plug to the light cable in the ceiling, then plug the PC power supply into there, then wire up the LED downlights to the 12v outputs, of which there are usually at least 6.
Having said all of that, it seems that most switched mode power supplies can be a source of EMI, hence the issue with the transformers used for the LED lights. The ATX PC powersupplies, do have an EMI filter.
Sounds like a nice weekend project coming up.
Get rid of the led bulb. It's faulty (or very poorly-designed).Anyone able to help, what do i get rid of my DAB radio, can't too much choice of stations, or my LED bulbs.
That one, too if faulty or poorly designed (probably the latter)... although you may, perhaps, also be in a marginal reception location and more liable to interference.I tried replacing the LED bulb that stopped the DAB radio working, following discussions with the supplier, with a different type (warm white as opposed to cool white). this had no effect it still stopped the DAB Radio working. thanks for the suggestion.
I employed LED lights but no problem was facedDid you find a way to solve this problem?
We are in the process of having a new kitchen fitted, with nice led lights, and we have found exactly this problem!
Thanks
Penny
Intriguing - was there much difference in price between the ALT & the Kosnic lamps? Are they both made in China?Have now found that Kosnic do offer a 6W wide angle GU10 replacement that is as good as the ALT.
Part no KTC06PWR/GU-10-F30.
Now installed & no DAB radio interference!