RF reception

Discussion in 'Radio and Communications' started by Iodem_Asakura, May 19, 2007.

  1. Iodem_Asakura

    Iodem_Asakura Thread Starter Senior Member

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    Probably everyone has noticed that sometimes when someone approaches to some rf equipment like a tv or radio, in some cases the signal get worse and in some cases get better.

    Can someone explain me why is that?
     
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  2. beenthere

    beenthere Retired Moderator

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  3. Gadget

    Gadget Distinguished Member

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    Use an external antenna.
     
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  4. recca02

    recca02 Senior Member

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    i believe he wants an explanation or a point of view on why does the rf reception gets better/worse when a human body approaches near the antenna/reciever. i myself have experienced this on several occasions.
     
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  5. Iodem_Asakura

    Iodem_Asakura Thread Starter Senior Member

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    Yes that is what i want.:p
     
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  6. beenthere

    beenthere Retired Moderator

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    As a very imprecise explanation, the human body has a lensing effect on radio waves. At different distances from the receiver, it may cause the waves to concentrate, leading to increased reception strength. At other distances, the effect is to cause the waves to disperse, leading to signal strength fading.
     
    #6
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