I have the following setup and was wondering where I might need to add ground wires to it, and to see if there is some good information anywhere relating to the mechanics of grounding and why it is necessary (not my area of expertise!) I have a DTV multi-satellite dish and an over-the-air antenna. It goes something like: Antenna -> 2GHz Splitter (A/B) Splitter Out A -> Diplexer A DTV Out A -> Diplexer A Splitter Out B -> Diplexer B DTV Out B -> Diplexer B Each diplexer goes to (obviously) a matching diplexer indoors that splits the signal back into the dish/antenna inputs on Samsung HD receivers. My original setup just added a grounding block between the antenna and the first splitter. I figured I should read up on it soon, especially before thunderstorm season hits here in the midwest! Also, can a ground (or lack thereof) influence the reception on the over-the-air antenna? Thanks!