Hi, I have just istalled a Wavefrontier dish. I have 4 satelites. The 4 LNB's are connected to a switch so I have 1 cable for the decoder. I now would like to add a second decoder. I tried with a simple switch but this only works for programs that have the same polarity. What do I need to add to my setup for this to work. I would also like to add cable TV to the setup. Thanks.