Connect satellite receiver and search for channels?

Hello 👋🏼 I'm absolutely at my wits' end. I want to connect my plasma TV (LG model/type 42PJ 350) to a simple satellite receiver. So far, so good. The cable is plugged into the satellite socket and connected to the LNB on the receiver. However, the channel search doesn't find any channels. I've asked other…

Is it better to use a coaxial cable with an inner conductor made of pure copper or steel copper?

Hey, I'd like to have a satellite socket in every room in my house and wanted to lay cables. What do you think is better: a pure copper inner conductor, or is steel or copper sufficient? Does anyone have any experience with this? It will be connected to a satellite system later, with a multiswitch…