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How long could you run a video signal lead?

  • 26-03-2012 8:48pm
    #1
    Bilbert55
    Registered Users, Registered Users 2 Posts: 93 ✭✭


    I have to connect the video output of a karaoke machine into a pubs TV system,

    Just wondering at what point (in length) would i expect to get signal drop off?

    i could modulate the output then run it as RF, which im presuming would travel much longer but just wondering if i was to run composite, how long would be "safe"??


Comments

  • #2
    formatman
    Registered Users, Registered Users 2 Posts: 794 ✭✭✭formatman


    if budget allows buy a kit of the Video to Ethernet sender boxes , if a regular gig then allows you to remove your good cables and leave a permanent ethernet run etc
    presume the kareoke system doesnt have macrovision on the output etc


  • #3
    Bilbert55
    Registered Users, Registered Users 2 Posts: 93 ✭✭Bilbert55


    not gign myself, just installing.

    Ethernet not worth it tbh

    i know all options just wondering how long would signal travel in composite before you'll have break up on pictures, Curiosity really......


  • #4
    formatman
    Registered Users, Registered Users 2 Posts: 794 ✭✭✭formatman


    well I ran RGB over 10M from a DVD /Blu Ray player to a projector with zero loss, haven't tested composite


  • #5
    ZENER
    Registered Users, Registered Users 2 Posts: 6,163 ✭✭✭ZENER


    With a good quality COAX (RG59 or URM70 should work) you should be ok up to about 50 meters or so without any noticeable drop in quality. After that there will be a decrease in high frequencies making the picture look a little soft but again probably not noticeable in your application. If you intend feeding several screens from a single source then maybe a VDA might be useful. Something like this perhaps ? It has adjustments to compensate for longer runs.

    As mentioned above by formatman a cheaper option is to use BNC to CAT 5 Baluns. There are also baluns that don't require an RJ45 to be fitted to the CAT5 cable making for a very easy install.

    Going down the RF road could end up causing more problems that it fixes, especially if the Pub has a terrestrial antenna for TV reception.

    Ken


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