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Radio Reception Dissapears When Put In Reverse??


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#1 alkyz89

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Posted 16 June 2013 - 07:58 PM

wierdest thing happens in my car but never really paid much attention as i hardly sit in reverse...

but was wondereing if it was just my car or a common problem??

 

so basically ill be listerning to the radio with perfect signal, then when i select the reverse gear itgoes so crackley you cant hear the station... any1 else suffer the same problem??



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#2 SeanW

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Posted 16 June 2013 - 09:39 PM

Nope...can't say I have...
Wonder if there's a wee earthing problem?

#3 frostman83

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Posted 16 June 2013 - 09:43 PM

My zetec reception Is terrible all round. Think yourself lucky! Lol

#4 vibeone

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Posted 17 June 2013 - 08:49 AM

I suffer from this, but only since I ran cables everywhere for 1) parking sensors 2) reversing camera 3) separated DAB aerial.

 

It seems like its the cables from the camera that has goosed mine, though the sensors had a similar effect.

 

Have you got sensors on yours?



#5 alkyz89

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Posted 17 June 2013 - 12:34 PM

No sensors... Although I plan to fit them soon so might have the opposite effect lol but I still don't understand how It would effect the signal unless you had a wireless set up that would interfere with the reception... Any brainiacs out there fancy shedding some light on the subject??

#6 vibeone

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Posted 17 June 2013 - 12:37 PM

Badly shielded cables running next to each other (in my case)



#7 Stoney871

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Posted 18 June 2013 - 01:00 AM

Try fitting some ferrite cores around the aerial cable.

This can help to reduce RF wash (that is the likely problem you're having).



#8 Andy H Dibley

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Posted 18 June 2013 - 01:14 PM

Can I take a guess that you fitted a Cree LED reversing light?

#9 alkyz89

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Posted 18 June 2013 - 03:56 PM

Haha I've got 2 Cree reverse lights lol is that the problem?

#10 Andy H Dibley

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Posted 19 June 2013 - 07:16 AM

I believe so. I had no problems with radio reception before, installed a Cree bulb, lose signal when the bulb is on.

Took the bulb out all is well again.

I think the electronics in the bulb aren't all that smart when it comes to RF interference.

#11 Stoney871

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Posted 19 June 2013 - 08:02 AM

Could be a good place to try a ferrite around the wires there and see if it helps?

#12 Andy H Dibley

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Posted 19 June 2013 - 08:16 AM

It really depends what's causing the interference.

If the bulb is badly shielded it could be oscillating from inside the casing and causing it to be picked up by the aerial, if its just poor design it could be radiating down the wires feeding the bulb, in which case yes, a ferrite core might help.

#13 frostman83

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Posted 19 June 2013 - 11:55 AM

Could this be the same with a interior light led ? It glows on all the time so could it interfere?

#14 Andy H Dibley

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Posted 19 June 2013 - 12:53 PM

It's all based on how well or poorly the design engineer was who designed the power supply module for the LED. It has to step down the 12~ VDC down to about 2.5VDC while also limiting the current.

Do a quick google search on Cree LEDs and Radio Interference.

#15 alkyz89

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Posted 20 June 2013 - 07:57 PM

cheers for the replies people... not to sure how a ferrit what improve my radio signal i thought they were just good for sending down rabbit holes....

 

just kidin what are ferrires, how do they work and how are they installed??

 

thanks again!!



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