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 Topic: radio interferance from new led lights
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22/2/2022 at 12:02pm
Location: East Herts
Outfit: 1992 Elddis Wisp 450CT + X Trail
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I presume all the new LED lights are the same make and type? I have replaced two of our reading lights with LED ones and no problem whatsoever. Those are the two lights we would be most likely to have on when the radio is on too.
If you have just bought the LEDs I would be inclined to contact the seller and see what they say. It could be that you have bought from a faulty batch or something like that. I personally have never heard of any interference problems with LEDs.
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Colin
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22/2/2022 at 12:12pm
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Are these direct replacements for 230~240 volt bulbs? The problem with many LED lights, especially the cheap ones, is that they have little or no RF shielding. LED's work very differently to incandescent bulbs, they contain circuitry to control the voltage and frequency of the bulb and it is this circuitry that causes RF interference.
There are two solutions to this. You can either buy high quality shielded LED bulbs from recognised brands such as Philips or Osram. Or you can install a low voltage LED lighting system with shielded wiring and transformer.
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22/2/2022 at 12:18pm
Location: East Herts
Outfit: 1992 Elddis Wisp 450CT + X Trail
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Quote: Originally posted by martin734 on 22/2/2022
Are these direct replacements for 230~240 volt bulbs? The problem with many LED lights, especially the cheap ones, is that they have little or no RF shielding. LED's work very differently to incandescent bulbs, they contain circuitry to control the voltage and frequency of the bulb and it is this circuitry that causes RF interference.
There are two solutions to this. You can either buy high quality shielded LED bulbs from recognised brands such as Philips or Osram. Or you can install a low voltage LED lighting system with shielded wiring and transformer.
Must admit I wasn't thinking of mains LEDs. All my current caravan's lights are 12 volt. My previous one did have some mains lights now I come to think of it. That was even older than my current one though (1988) and I thought they had done away with mains lights in caravans. I could be wrong there though.
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Colin
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22/2/2022 at 12:23pm
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Quote: Originally posted by Colin21 on 22/2/2022
I presume all the new LED lights are the same make and type? I have replaced two of our reading lights with LED ones and no problem whatsoever. Those are the two lights we would be most likely to have on when the radio is on too.
If you have just bought the LEDs I would be inclined to contact the seller and see what they say. It could be that you have bought from a faulty batch or something like that. I personally have never heard of any interference problems with LEDs.
Interference from LED lights is quite common, though it is mainly the 230~240 volt bulbs that cause the problem. Many cheap bulbs have almost no RF shielding. Low voltage systems rarely cause problems because they almost always use shielded wiring and transformers as required by law. The interference mainly affects the AM and MW frequencies, but some bulbs can also affect low to medium strength FM signals. Home WiFi signals are also sometimes affected, but again, this is almost exclusively due to cheap 240v LED bulbs.
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22/2/2022 at 1:37pm
Location: East Herts
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Quote: Originally posted by martin734 on 22/2/2022
Quote: Originally posted by Colin21 on 22/2/2022
I presume all the new LED lights are the same make and type? I have replaced two of our reading lights with LED ones and no problem whatsoever. Those are the two lights we would be most likely to have on when the radio is on too.
If you have just bought the LEDs I would be inclined to contact the seller and see what they say. It could be that you have bought from a faulty batch or something like that. I personally have never heard of any interference problems with LEDs.
Interference from LED lights is quite common, though it is mainly the 230~240 volt bulbs that cause the problem. Many cheap bulbs have almost no RF shielding. Low voltage systems rarely cause problems because they almost always use shielded wiring and transformers as required by law. The interference mainly affects the AM and MW frequencies, but some bulbs can also affect low to medium strength FM signals. Home WiFi signals are also sometimes affected, but again, this is almost exclusively due to cheap 240v LED bulbs.
Yes that now makes perfect sense. I must admit I was only thinking of 12 volt LEDs when I said that as I didn't think mains lights in caravans were used after about 1990. My previous caravan had them but that was 1988, and my current one which is 1992 only has 12 volt lights.
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Colin
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22/2/2022 at 10:32pm
Location: East Herts
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Quote: Originally posted by WICKSY08 on 22/2/2022
no these i bought off of ebay they are 12 led square lights with on off switch to replace the old 12 volt round bulb with new 12volt led
In that case I would definitely take it up with the seller, politely at first. If that gets you nowhere, take it up with ebay.
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Colin
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via mobile 22/2/2022 at 12:45pm
