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TV Distribution

Discussion in 'Home Cinema Building DIY' started by kensden, Sep 18, 2003.

  1. kensden

    kensden
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    Fuzzy Picture
    Sorry it's a convoluted one:

    Sky Digibox (RF Channel 44) looped via rf to a Sky Plus box (RF Channel 46) then looped to a VCR (RF Channel 50) then via rf to an IR injector then to an IR compatible amplifier, then from amplifier to six TVs (all fitted with Handylink eyes),

    Cabling = CT100 or equivalent
    Ampifier = Labgear 8-way distribution amp with IR return (MSR380)
    IR injector = Labgear IR Remote Extender kit (MRX120)

    There in NO analogue TV aerial input.

    I have Sky Digital on Channel One
    I have Sky Plus on Channel Two
    I have VCR on Channel Three

    I have IR control of all three devices at all six TVs.

    So what's my problem?

    The picture is hazy and if you look closely there are fainted horizontal lines.

    I only have three RF signals travelling along the cable 44, 46 & 50 should my picture not be near perfect?
     
  2. ReTrO

    ReTrO
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    You could try putting them on RF channels further apart. If that doesn't work i'm afraid i don't know.
     
  3. kensden

    kensden
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    I'v used the table as supplied at, "http://www.kat5.tv/taboo_guide.html." to space them according to the 1,5,9 rule an thesese are the best I can find. I've avoid the channels where the analogue TV signal would normally be 31 (BBC1), 27 (BBC2), 24 (STV), 21 (C4) & 48 (C5) but perha[s in light of the fact that I don't have an analogue input maybe I should use them?
     
  4. severnsource

    severnsource
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    Could be cross modulation due to overloading one of the RF amps. VCRs can be quite prone to this, so the first thing that I'd do would be to bypass the VCR and see if that improved things.

    If that is the problem the easy solution would be an RF attenuator.

    Bill
     
  5. kensden

    kensden
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    Tried that, no difference, thanks for the suggestion
     

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