Well... I discovered that it is mostly caused from the satellite. When I unplug the coax most of the hum it eliminated. What little is left, I believe stems from a receiver with a 2 pronged power connection connected to an amp with a 3 pronged power connection. Unfortuneately, most of the filters being made today do not work with satellite because the satellite receives its power through the coax. I've placed a "cheater" plug on the amp to get rid of the ground prong and that seems to help. This of course isn't a permanent solution and I need to look into how my satellite system is grounded.
