HD TV question.

welkman
welkman Posts: 396
edited June 2011 in Commuting chat
Hi,

Can anyone settle this little argument i'm having with one of my freinds?

Can you send a HD signal over a normal RF cable? He has just had Sky HD put into his house and has had it linked to the kitchen from the lounge with a normal TV aerial type connection. I was under the impression you needed a HDMI, DVI or component cable to transfer the HD signal? The company assures him that it is full blown HD in the Kitchen but the quality is a bit poor?

Cheers,

W

Comments

  • asprilla
    asprilla Posts: 8,440
    Odd one.

    I'd say no, you can't, but the dish uses an RF cable to get the data to the decoder. Depends exactly what the set up was.
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  • welkman
    welkman Posts: 396
    just looked and....


    the signal is shocking. Its not even a good 'sky' quality, let alone a HD signal!
  • nicklouse
    nicklouse Posts: 50,675
    welkman
    it depends on where and what is being sent. from the decoder then composite/DVI/HDMI
    is needed.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • welkman
    welkman Posts: 396
    Hi,

    It is being sent via the RF OUT (either 1 or 2 ) on the back of the SKY HD box. Normal TV fed over HDMI connection.

    Cheers

    w
  • nicklouse
    nicklouse Posts: 50,675
    what make of box?
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • Initialised
    Initialised Posts: 3,047
    If it's sent out of the RF Out then it will be SD.
    I used to just ride my bike to work but now I find myself going out looking for bigger and bigger hills.
  • nicklouse
    nicklouse Posts: 50,675
    just had a look at the "generic" HD Box and it just looks like SD pass through.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • squeeler
    squeeler Posts: 144
    My main TV is connected directly to Sky+HD and that is sent around the house to other TVs using RF connectored coaxial cable and it only gives a SD picture. The installer said HDMI cables would sort this but it would be pretty expensive.
    You can send the HD signal using RF connections but it will need a decoder, otherwise it just shows up as Standard Definition.
  • Paul E
    Paul E Posts: 2,052
    If it's being fed out of the RF port on the back of the HD box not a chance, it is being fed from there as SD.

    There might be a way if fed from the HDMI port and then into a box that converts it to pump it down an RF (COAX) cable to another box which reconverts it back to HDMI but I don't know if they exist.

    I am also unsure if you can split a HDMI signal too because you start getting into the copy protection stuff that all HDMI signals are encoded with.

    I do know you can buy pretty long HDMI cables, 5 metres or so but not sure if that helps.
  • CiB
    CiB Posts: 6,098
    welkman wrote:
    The company assures him that it is full blown HD in the Kitchen but the quality is a bit poor?
    Sounds like they need to be invited back to justify that statement, and presumably the bill that followed it.
  • Paul E
    Paul E Posts: 2,052
    A company with no idea by the sounds of it, they didn't turn up on horses shouting yeee haaa did they?

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