where are the 300 ohm terminals located?

7 Answers

  • 3 weeks ago

    On that 20 year old TV in your attic. ..........

  • Fred
    Lv 7
    4 weeks ago

    Twin wire 300 Ohm impedance antenna wire was used years ago before 75 Ohm coaxial antenna lead became more popular.  The wires were spaced about half an inch apart and this distance was important to give it the 300 Ohm impedance and if you use something like speaker wire in its place most of the signal will be lost.  On older televisions especially the old Black and White televisions had 2 screw terminals next to each other and you screwed one wire under each screw at the back of the set..  Then Coaxial cable became the norm and it had a centre wire with insulation around it and another conductor wrapped around that.  If you had 300 Ohm antenna wire coming in but your television only had a coaxial plug then you needed a 300 Ohm to 75 Ohm coaxial converter commonly called a balun where you attach the 2 wires to one side and plug the other side into the coaxial antenna socket on the back of the television.

  • Anton
    Lv 6
    4 weeks ago

    OMG!  300 ohm connections have been obsolete for 40 years!

    The 300 ohm connection is a pair of screws, about a half inch apart.

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  • 4 weeks ago

    Typically that is the antenna input for vhf on an old NTSC television. That's where you connect the 300 ohm ribbon cable that goes to the vhf antenna.

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  • Anonymous
    4 weeks ago

    On that 20 year old TV in your attic. 

  • Ask your mother: she puts things away.

  • Anonymous
    4 weeks ago

    Up my asshole..................

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