Looking for advice on similar lines. I have a main TV which is fed from a second LNB output (i.e. secondary to the main SKY output) to receive Freesat. In the next room I have a second set which, at the moment, receives its input from the main set via a wireless link. I have a separate Freesat receiver which I would like to be able to connect to the LNB output via some sort of switchable selector so the output could go to either main OR secondary (NOT both at the same time), Search, so far, has produced a mass of confusion.

I would have thought that a simple cable splitter would have done the job but, apparently, not so.

What does 'do the job' has , so far , escaped me.

Any clues, please?
TIA