This may have come up in the past, but I couldn't find it on a quick search.
So, I have a 722 in the family room, and a 622 in the living room. I'm using the old CATV wiring in this house to feed the OTA antenna (for HD OTA) to the DVRs and TV's. I COULD use diplexers to combine it into the satellite run, but that was actually easier for where the antenna is placed...
Now, question -- if I wanted to feed the modulator output of the DVRs to OTHER TVs in the house, can I safely do so over the SAME RG6 cable that the DVRs RECEIVE their OTA signals (using a simple splitter in reverse), or am I asking for feedback loop issues? (I know there's also some risk of broadcasting the DVRs output some short distance, not concerned about that)