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Connect Roamio to TV's coax input

Discussion in 'TiVo Help Center' started by gunste24, Nov 20, 2013.

  1. gunste24

    gunste24 gunste24

    Nov 24, 2012
    Tivo says that one cannot connect a Roamio to the coax input of a TV.
    But there seem to be a cable available to run the HDMI to coax input.
    Also Etekcity seems to have some boxes that convert HDMI to coax.
    Has anyone made such a connection?
    Or is this a lost cause?
    Tivo people are very sparse with information.:(
  2. unitron

    unitron Active Member

    Apr 28, 2006
    Co-axial means a wire in the middle with some sort of insulation and then another conductor around that.

    The cable that the cable company runs to and into your house is a type of co-axial cable.

    The cables with RCA plugs on the end that you use to hook stuff up to the back of your stereo are another type.

    The ones like that with a yellow RCA plug that are used to get composite video from one place to another, and the red, green, blue trio of RCA plugs that are used for component video are also co-axial cables.

    So you're going to have to be more specific when you say "...the coax input of a TV", because my first thought was "the input to the television's tuner where you connect the 75 Ohm impedence co-axial cable from the antenna or the cable company, but your remark about HDMI makes me wonder if you're talking about composite or component video.

    (depending on the TV, it may also have a "coax" input for digital audio over

    A. Wire with an RCA plug on the end,


    B. Fiber-optic cable)


    Wouldn't hurt to specify which model Roamio you're talking about, either.

    UCLABB Active Member

    May 29, 2012
    Is it that you have a very old TV without HDMI inputs and need to get it connected to the Roamio? Unless it is really, really old, it should at least have composite inputs and you will have to use those. Otherwise, I believe you need a new TV. Or maybe there is something that would convert HDMI to coax, but I still think you ought to bite the bullet and buy an HD TV. You won't be sorry you did.
  4. lgnad

    lgnad Pantless Mofo

    Feb 14, 2013
    Unless Im totally confused about what you're looking for:

    If we're talking a base Roamio, you could buy the breakout cables, then an RF modulator. Google it, theres a million of them out there, ranging from $5 to well, a lot.

    The fancier two models, just connect the modulator to the composite and audio outputs.

    ... connect the output of the modulator to the coax in on the tv.... and stand back. Its probably going to be fairly ugly/blurry, but it should work.

    Seems crazy to me to spend the money for the dvr and then spend more money to hook it up to some ancient tv, but there it is.

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