So my father has a 322 receiver, and wants to mirror tuner 1 into one bedroom, and mirror tuner 2 into another. Tuner 2 is already mirrored, however im not sure if this is possible with tuner 1 short of running a cable directly to that room. tuner 2 is backfed thru the cable via diplexers, is there a way to back feed tuner 1 also on that same cable?