Could you be more specific? I have no idea what you're talking about? How about a link to the product, you're talking about?
I'm not aware of any powered splitters for satellite signals, that doesn't mean there aren't any, just that I'm not aware of any. I think you may mean a "Power Pass Through Splitter"? But, until you can be more specific, I don't know how to proceed?
Al
Correct, the power pass splitter means there isn't a built-in DC block. Some splitters pass power on all ports, some only on one. The application would be, for example, if one wanted to use two receivers on one LNB--only one receiver should be sending power to the LNB. So one receiver would be connected to a power passing port, and the other(s) would be connected to non-power-passing port(s).