So i have this antenna going to my tv for freeview hd, works good.

But i also want to view another coaxial source from the telstraclear box in the other room on the same tv.

How would i combine these together so the tv can tune them seperately?

I'm probably not making much sense right now.

I've tried a splitter in reverse, that gives me the analog source from the other room, but only freeview channels 5 and up.

Thanks