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
    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
    The attenuation or signal loss caused by the splitter.
  3. ErnieM

    AAC Fanatic!

    Apr 24, 2011
    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.