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Test cable TV input signal strength?

Discussion in 'Electronic Repair' started by [email protected], Jun 25, 2005.

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  1. Guest

    I just made 3 16ft coax cable extensions that will run to 3 TVs (1
    each) off of a cable that previously had only 2 TVs on it.
    I bought rg6 wire with crimp on connectors and 3 5-900MHz 2-way
    splittes for the connections.
    I noticed a little snow in the reception of the 2 TVs i ran off of the
    first 2-way splitter I installed.
    Could I use my analog multimeter to test the signal strength coming
    from the cable?
    If so then what should the signal stength be?
    The first splitter leads to 1 TV one way, and then the 4 other TVs.
    The second split will be to 1 TV, and 2 TVs
    Should I use better splitters?
    Do I need a signal amp?
    If so what do you recommend?
    This is the first time that I have run cable so I'm not totaly certain
    of what is best.
  2. NSM

    NSM Guest

    Get a 5 way splitter and use that. Use a Radio Shack amp if needs be - some
    have a built in splitter.

  3. Guest

    The 3 legs that I am running are far apart.
    I could use 3 lenghts of 16 ft wire with 3 splitters or well over 150
    ft of wire with a 5-way.
  4. NSM

    NSM Guest

    Multiple splitters is a bad idea. The only other way is to run one cable and
    use taps and not splitters.

  5. Guest

    There is NO free lunch here. If you split the signal two ways, each
    television will get 1/2 of the original signal strength.... actually
    a little less than that due to losses. If you split it 3 ways then
    each television will get a little less than 1/3 of the original signal
    Radio Shack sells a 4 way amplified splitter that compensates for the
    split and the losses. Each of the 4 outputs produces a slightly
    greater signal strength than the input.
  6. Mike Berger

    Mike Berger Guest

    That's the correct way to do it. With the series connection
    you have now, each TV down the line will get a progressively
    worse signal. The star distribution configuration should give
    you an adequate signal for each TV despite the longer coax length.
  7. Mark

    Mark Guest

    and no you cannot use a vom multimeter to measure the catv signal.

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