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-   -   LED lights causing interference (https://www.goldwingowners.com/forums/11-honda-goldwing-forum-general-discussion/124229-led-lights-causing-interference.html)

GetAway 08-25-2018 09:18 AM

LED lights causing interference
 
(gCaptain) The Coast Guard said it has received reports from crews, ship owners, inspectors and other mariners regarding poor reception on VHF frequencies used for radiotelephone, digital selective calling (DSC) and automatic identification systems (AIS) when in the vicinity of light emitting diode (LED) lighting on-board ships (e.g., navigation lights, searchlights and floodlights, interior and exterior lights, adornment)

Some info I ran into. Could this be some reason some people are having radio reception problems?

This is from Tech Talk on Cruising Compass #624. This is not the complete article. I'm not sure about copy right laws etc. to post the whole thing.

Ron Robertson 08-25-2018 09:30 AM

I can see it happening. Even the Sun with mess with satellite TV reception when get in direct line with the Satellite and the receiver. It only lasts a few minutes and only happen a couple times a years. It has to be a direct spot on alignment. That's in the 4 gig band..

Chopin 08-25-2018 12:20 PM

Some LED light bulbs installed in garage door openers can cause range issues with the remote signal. The numerous I have run across, I replace them with an " old " style incandescent bulb and use their LED bulb in my home !

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Cantankerous 08-25-2018 01:58 PM

When I bought my new garage door opener, it stated in the instructions, not to use an LED bulb.

travis.farmer 08-25-2018 04:25 PM

i would tend to think the LED power supply, usually a switching buck-converter, would be the cause. blaming the LED is like if water dribbles from the end of a garden hose, so you blame the hose, rather than the leaky valve.


just my thoughts...


~Travis

Chopin 08-25-2018 06:34 PM

Quote:

Originally Posted by Cantankerous (Post 2163773)
When I bought my new garage door opener, it stated in the instructions, not to use an LED bulb.

Some brands do not interfere. COSTCO sells the FEIT brand. Never had an issue with that LED.

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tamathumper 08-25-2018 07:24 PM

Certain brands of LED bulbs are marked as "Garage Door Opener Compatible".

I bought the wrong ones first, of course (now in the house), and followed up with a brand on Amazon that reviews indicated were safe (and they were).

guyval 08-26-2018 11:16 AM

Quote:

Originally Posted by travis.farmer (Post 2163781)
i would tend to think the LED power supply, usually a switching buck-converter, would be the cause. blaming the LED is like if water dribbles from the end of a garden hose, so you blame the hose, rather than the leaky valve.


just my thoughts...


~Travis

Yep, LEDs are DC.
Some switching power supplies can be and are very noisy.
They cram those inverters into the base of the bulbs. Size and costs over filtering.
I'm sure many of them only do the least amount of filtering necessary to satisfy the FCC rules, and probably many miss the mark and make it to market anyway.

The LEDs on our bikes may not have inverters since we're dealing with DC to start with, but high output and LED are not typically synonymous, so there's some boosting and cooling electronics in the headlight bulbs.

Noisy, maybe.

Take any old AM radio ( if you can find one) walk around your bike with the engine running and the lights on, see if it interferes with reception on the radio.

Whew! Where's the coffee?



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Chopin 08-26-2018 12:56 PM

Garage Door opener frequency ranges are between 300-400 MHz. 390 MHz being the best overall for reception and range. 315 MHz was their worst frequency, subject to a lot of interference from mysterious sources.

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