1 receiver three tvs

[coham]

The original cable install used a splitter in the basement to send the signal to the back second floor tv. The sat guys removed the splitter and installed a barrel connector to feed through to tv2 in the living room where the diplexer is then up to the receiver and hdtv1 in the front bedroom. My question is can I use another diplexer at this juction instead of splitting the signal at tv2 and having to run another coax to backfeed the 3rd tv? I dont mind two tvs with same programs.