question about cable tv splitter

Discussion in 'General Electronics Chat' started by lokeycmos, Nov 7, 2012.

  1. lokeycmos

    Thread Starter Active Member

    Apr 3, 2009
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    what does it mean on cable tv splitters when it says "-5.8dB" such as the attached pic? i have one in my basement that is a 3-way. 2 of the outputs say "-3.5db" and the third says "-7db".
     
  2. mcgyvr

    AAC Fanatic!

    Oct 15, 2009
    4,769
    969
    The attenuation or signal loss caused by the splitter.
     
  3. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    7,386
    1,605
    A splitter is a passive device, so it can only divide what it is given, and it may also have losses.

    For an example (where I don't have to do any math) remember 3dB is half power, so the best an ideal 2-way splitter can go is divide one input in half to two outputs each 3dB down.
     
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