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    harum's Avatar
    harum Posts: 339, Reputation: 27
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    #1

    Sep 27, 2009, 01:37 AM
    Connecting coax TV cable
    I have to connect a coaxial TV cable to a TV set with only a 75 Ohm antenna input and RCA audio/video inputs. What is the simplest way to get this done? Are there coaxial cable - to - antenna input or coaxial - to - RCA (three inputs) adapters? Would appreciate any suggestion, H.
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Sep 27, 2009, 05:15 AM

    A coaxial TV cable is usually labeled "RG-59/U" or "RG-6/U". It's "75-ohm cable". The 75 ohm antenna input on the TV set is where you want to connect it.

    If there is no connector on the cable, you'll need to get an "F-connector" and screw or crimp it onto the cable. Basically, this only extends the cable's "shield". The center conductor is bared so it can make its own contact.

    F connector - Wikipedia, the free encyclopedia

    There is no coaxial to RCA adapter.
    KingsX's Avatar
    KingsX Posts: 231, Reputation: 10
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    #3

    Sep 27, 2009, 09:53 AM

    There is actually a "sort of" RF (coax) to RCA composite video adapter. You could use a VCR, even if it doesn't play or record.
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #4

    Sep 27, 2009, 11:39 AM
    Quote Originally Posted by KingsX View Post
    There is actually a "sort of" RF (coax) to RCA composite video adapter. You could use a VCR, even if it doesn't play or record.
    I guess a VCR is a "sort of" adapter. You could connect the antenna into the VCR's antenna input and then get a set of three RCA cables (white, red, yellow) to connect the two audio signals and the video signal to the TV, but I don't think I'd bother with this unless the TV's antenna input was broken.
    KingsX's Avatar
    KingsX Posts: 231, Reputation: 10
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    #5

    Sep 27, 2009, 12:53 PM
    Quote Originally Posted by Perito View Post
    I guess a VCR is a "sort of" adapter. You could connect the antenna into the VCR's antenna input and then get a set of three RCA cables (white, red, yellow) to connect the two audio signals and the video signal to the TV, but I don't think I'd bother with this unless the TV's antenna input was broken.
    Exactly, but just in case, it is an option.
    KISS's Avatar
    KISS Posts: 12,510, Reputation: 839
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    #6

    Sep 27, 2009, 02:17 PM

    Whoa guys:

    CABLE TV wasn't mentioned, but I'll include it.

    A coaxial cable is a 75 ohm cable for TV. The ends are usually an "F" connector. The female connector basically looks like threads with a small hole. The male has a piece of wire sticking out of something with female threads.

    You can get a device that takes composite video (the RCA jacks and converts this to NTSC video). The old standard. They were available for about $20 without cables.

    What I am concerned about is what the cable system is using. Compatibility may not exist anymore.

    With High definition, the standard is now something like QAM or something like that for high definition. Before you had to select broadcast or CABLE on the TV otherwise you could not get past channel 6.

    If you don't have a QAM tuner, you may either need that device or have to rent a cable box from the cable provider.

    The question is: What kind of format is the signal on the coax that you are trying to connect?
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