Farily simple questions here: I am looking to combine to signal from a satellite dish and standard aerial so I can tune into both Freeview and Prime with the signal I get from the wall socket. The answer, I think, is a multiplexer. Assuming that is correct, there is a bit more to this.

I live in an apartment which is part of the same physical buildng, but self-contained. The landlord has wired co-ax into my room which carries analogue TV, however I would also like to get satellite. There is a satellite currently installed with the cable terminating in the main house somewhere (the connection is unused). I have their permission to use that signal, but I will be organising/paying for it.

My intention is to ask a proffessional installer about doing the job (easier, and landlord probably feel better about it) but I just want to get an idea, if it is easy enough (and an installer wants too much) I may do it myself. Obviously I would need to establish the exact location of various cabling, but if I found the co-ax going to my room, cut it, installed a multiplexer with the satellite signal on the other input that should work right?