plug in USB

Discussion in 'Tech/Mech General' started by Figaro, Mar 7, 2016.

  1. Figaro

    Figaro Funster

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    I bought a cheap ebay plug in USB socket that goes into the cigarette lighter but it causes interference with the radio, very annoying.
    Does anyone have an explanation of what I might look for to buy one that doesn`t cause this problem ?
    Thanks,
    Chris
     
  2. pappajohn

    pappajohn Funster Life Member

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    Buy a better quality one Chris.

    Cheap no good, good no cheap.
     
  3. Jaws

    Jaws Funster Life Member

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    No way to explain it without getting technical..
    If you would like a technical answer no probes.. .. But a bit more info than most folk would be interested in ;)
     
  4. John Laidler

    John Laidler Funster

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    Fit a proper wired USB socket. There are a few threads on here covering this.

    But interference is a pain, my dash cam interfers with the radio - fortunately we don't listen to the radio much while driving. :)
     
  5. Gellyneck

    Gellyneck Funster Life Member

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    Go on John.
    Ran out of Mogadon tablets and not had a good kip for ages!:p;):giggle:
     
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  6. Figaro

    Figaro Funster

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    As @DBK suggests I think I'll fit a wired one in place of cig lighter
    Thanks all
     
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  7. Jaws

    Jaws Funster Life Member

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    One thing I would suggest..
    I know it's not that easy, but pull the radio and unplug the aerial
    Use a multimeter and check the aerial is actually earthed.
    It is shocking the amount of motorhomes that have aerials fitted that seem to rely on the radio earth ..
    That leaves a nice long bit of unbalanced coax to absorb any stray RF floating around !
     
  8. tonyidle

    tonyidle Funster

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    On the off-chance that it's the cigar socket wiring that's radiating try putting both wires feeding the socket through a ferrite ring - twice. Cheap or not I doubt that any USB socket is suppressed - there isn't much room inside and they use a switched mode chip to drop the voltage that generates interference by its very nature.
     
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