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Is there a special cable for audio optical jacks?

Are dual-coaxial cable jacks still necessary?

  • Most cable companies have upgraded their old system of using an A & B box with two sets of coaxial cables to a single coaxial cable system. So would a double jack installed at every tv location in a new house be of any use? When all the tv stations go digital, will the increased bandwith justify the need for two cables once again? Will other new technologies need dual coaxial cables as well (satellite tv, digital cable, fios, etc).

  • Answer:

    The 2nd wire was for an OUTDOOR antenna and the A/B switch was used to connect the TV to Cable OR your outdoor antenna.... If you still have your outdoor antenna, keep it....It may come in handy if you lose cable signal.....

leotheli... at Yahoo! Answers Visit the source

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If you think you might ever want to get DirecTv DVR then you will need 2 lines from the dish to the receiver for the dual tuners to function.As an installer almost every time I get a DVR job I have to go into the attic and fish a wall because their "prewired" house only has one line to each location.And if you want satellite you need to have a phone jack near the coax outlet also and not on the other side of the room like so many "professional" home builders like to do.

charles c

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