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Thread: TV's, Antennas and strange things

  1. #1 TV's, Antennas and strange things 
    Forum Freshman
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    Sep 2006
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    Hey all,
    Yesterday I was in the process of setting up a TV in my room. During this I noticed an interesting phenomenon. After plugging in my TV to the power supply and plugging the Antenna into the TV socket. (My Antenna is an amplified one so it was also plugged into a power supply and turned on at the time)

    I began moving the Antenna around to find the best position for it.

    During this time the TV and Antenna were both switched on.

    As I was doing this I noticed that if the antenna cable (not the power supply to the antenna but the actual coaxial cable – or whatever its called) went near the front of my TV’s screen I would hear an obvious “sparking sound” and near the area the antenna cable was touching the TV would turn distorted and bluish. (Similar to when you put a magnet near the TV)

    Does anyone know why this might happen? I have taken a wild guess and assumed it had something to do with the cable - despite not being the power supply - still having some electric current running through it creating a magnetic field of some sort.


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  3. #2 Re: TV's, Antennas and strange things 
    Forum Freshman
    Join Date
    Jan 2007
    Posts
    25
    Quote Originally Posted by maximg
    Hey all,
    Yesterday I was in the process of setting up a TV in my room. During this I noticed an interesting phenomenon. After plugging in my TV to the power supply and plugging the Antenna into the TV socket. (My Antenna is an amplified one so it was also plugged into a power supply and turned on at the time)

    I began moving the Antenna around to find the best position for it.

    During this time the TV and Antenna were both switched on.

    As I was doing this I noticed that if the antenna cable (not the power supply to the antenna but the actual coaxial cable – or whatever its called) went near the front of my TV’s screen I would hear an obvious “sparking sound” and near the area the antenna cable was touching the TV would turn distorted and bluish. (Similar to when you put a magnet near the TV)

    Does anyone know why this might happen? I have taken a wild guess and assumed it had something to do with the cable - despite not being the power supply - still having some electric current running through it creating a magnetic field of some sort.
    you are correct in a way, one of Hertzes laws explains that every electric field however benine generates a magnetic field of equal or less then that of the electric field. and the magnetic field causes veriations in the T.V's picture and sound.

    maybee better known as electromagnetic radiation.


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