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Crackling

Posted By : Robert Ellis, 18-Jun-2007, 09:36pm

speakers are crackling on radio and cd mode. is this the engine electrics interferring with the radio electrics? thanks

Followups :

Crackling

Posted By : Ivan Yates, 26-Jun-2007, 07:38pm

How old is the radio? You are probably picking up ITMA
- Crackling
  
  Posted By : Trevor Ellis, 28-Jun-2007, 00:13am
  
  rob ellis again (dads account) ITMA? what is this. i have just fitted a supressor into the circuit but it does not seem to have made much of an improvement.
  - Crackling
    
    Posted By : Chris Taylor, 28-Jun-2007, 08:34pm
    
    ITMA = It's That Man Again. A radio comedy show that was very popular, but before my time!
    I think someone is asking whether the radio is AM or FM. AM (long wave and medium wave) is a lot more sensitive to interference than FM. Does your car have an alternator? If so, it might be worth fitting a choke in the supply to the radio to make sure it gets a "clean" electric supply.
    Also worth checking your HT leads. They give out biggest interference if of the wrong type or with insulation deteriorating. If they look past their best, you could try changing them anyway, as it will work wonders for the starting, reliability, performance and economy of the engine anyway. (Assuming other ignition bits are in A1 condition of course).