I have an aftermarket radio that was already installed in my LQ horse trailer. it is a furion. The problem I am having is when the radio is on and I turn on the overhead lights in the trailer the volume of the radio is reduced significantly. The radio is installed in a panel above the couch so I took the panel off to expose the backside of the radio. I never saw the quantity of electrical wires this thing has.Anyone have an idea what may be causing the reduced volume issue?

lc0338 wrote:Anyone have an idea what may be causing the reduced volume issue?I'd bet you have LED lighting and that's what causing RFI interference with the radio. The solution is to replace them with LED bulbs that don't, just as I did. Pics are in my gallery. :)

SoundGuy wrote:lc0338 wrote:Anyone have an idea what may be causing the reduced volume issue?I'd bet you have LED lighting and that's what causing RFI interference with the radio. The solution is to replace them with LED bulbs that don't, just as I did. Pics are in my gallery. :)The radio is very near an under cabinet light and where the radio appears to be getting it's power source. I can turn that under counter light on and it does not impact the radio volume. But, if I turn on the main light switch on the other side of the trailer the volume becomes reduced. I have noticed that if I just turn on the 1 under counter light the converter does not turn on. When I turn on the main light switch the converter comes on... so I'm thinking the converter may be playing a role in the interference. The trailer is a 2007 year model. The light bulbs are have 921 printed on them. If the under counter light does not affect radio volume don't know other light bulbs would.

lc0338 wrote:The radio is very near an under cabinet light and where the radio appears to be getting it's power source. I can turn that under counter light on and it does not impact the radio volume. But, if I turn on the main light switch on the other side of the trailer the volume becomes reduced. I have noticed that if I just turn on the 1 under counter light the converter does not turn on. When I turn on the main light switch the converter comes on... so I'm thinking the converter may be playing a role in the interference. The trailer is a 2007 year model. The light bulbs are have 921 printed on them. If the under counter light does not affect radio volume don't know other light bulbs would.More info is needed ... are you the original owner of this 2007 trailer, if not perhaps some of the bulbs have been changed to LEDs. If they're all 921 incandescent bulbs then perhaps the converter is the cause, in which case turning it off and running on battery power might solve the issue. If that works then it's possible the converter is failing or there's a loose ground ... but that could be just about anywhere and very difficult to locate, though checking the connections at the converter would be the obvious place to start.

I would measure 12VDC voltage drop at the RADIO when you turn additional lights. You may have picked a bad place to get your 12VDC to run your AM/FM radio. Standard Automotive 12VDC lights can draw some serious DC CURRENT..I also agree with others that the LED lights that have built-in BUCK BOOST regulator chips can cause RFI signals that may interfere with your HDTV, VHF/UHF Freq Radio reception, NOAH WX ALERT radio signals, etc...Roy Ken

Sounds like the converter is generating RF interference. :)

Radio Interference | Good Sam Community

lc0338
Explorer
Jul 09, 2016
bought this trailer from dealer who sells both new and used trailers and different brands. They are competent. converter is 8955AN WFCO
lc0338
Explorer
Jul 09, 2016
problem seems to be intermitten. i had it at another service location to change out the awning and they said they could not duplicate the problem
lc0338
Explorer
Jul 09, 2016
I hardly ever listen to AM so FM is the problem for me
lc0338
Explorer
Jul 09, 2016
i give up. this site cannot take the traffic this evening
wa8yxm
Explorer III
Jul 09, 2016
If you do not have LED lighting (As someone up-thread said LEDs can cause radio interference) hang a digital volt meter on the radio's power lead within six inches of the radio if you can (IF there is an inline fuse you can tap in there and not have to cut or pierce wire A single strand of stranded wire is enough to feed the meter)

I'm suspecting voltage loss

LED interference ususally comes in as NOISE.. not volume loss. Though some of my radios might present as volume loss. but they have industrial strength noise limiter circuits which are not normally present in car radios today.
lc0338
Explorer
Jul 09, 2016
wa8yxm wrote:
If you do not have LED lighting (As someone up-thread said LEDs can cause radio interference) hang a digital volt meter on the radio's power lead within six inches of the radio if you can (IF there is an inline fuse you can tap in there and not have to cut or pierce wire A single strand of stranded wire is enough to feed the meter)

I'm suspecting voltage loss

LED interference ususally comes in as NOISE.. not volume loss. Though some of my radios might present as volume loss. but they have industrial strength noise limiter circuits which are not normally present in car radios today.

Thanks for another potential cause, other than LED. I have a spare AGM battery and may use it as a power source for a few day's to isolate the radio from the normal power source to see if the volume loss shows up.

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