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radio static

Discussion in 'Electronic Repair' started by zirath, Sep 29, 2008.

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  1. zirath

    zirath Guest

    Our lcd computer monitor is causing alot of static on some am radio
    stations.

    Was wondering what type of capacitor to use to filter?

    Thanks.
     
  2. GregS

    GregS Guest

    Taking out the trusty RS Flavor Radio, I find all kinds of trash and birdies near the monitor,
    along with power line grundge, computer noise, and flourescent light trash.
    Try rotating the radio or monitor ??

    greg
     
  3. Sjouke Burry

    Sjouke Burry Guest

    3 ferrite rings, 2 on the binary/analog cable, and one on the
    power cable, and if it has an external supply a fourth one on the
    low voltage power cord,close to the body of the monitor.
    Also grounding the computer and monitor as well as possible(not
    always possible).
    Short straight leads to a short ground lead(if available).
     
  4. terry

    terry Guest

    If the monitor is 'radiating' RFI (Radio Frequency Interference)
    capaciors may not be the answer. Separating the two items and or
    shielding the monitor with a grounded metal box may reduce it.
    If you have the monitor and the radio plugged into the same AC supply
    outlet pluging the radio in via a line filter 'might' help.
     
  5. You'll need to move the AM antenna outside.
     
  6. ian field

    ian field Guest

    AM is very susceptible to this kind of interference so there may not be much
    you can do, a while back I was having problems with FM reception - at the
    time I had access to split type clip-on ferrite collars from scrap equipment
    and clipping these onto the mains leads for everything (including the radio)
    got the interference down to a bearable level. It might be worth a try if
    you can get hold of some ferrite collars, the one piece non-splittable types
    are more common but can only be used on leads with removable plugs, you'll
    need some splittable clip-on types for the leads with moulded plugs.
     
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