I used some RCA pyramids, they receive IR signals and transmit RF then the receiver transmits back in IR to the sat receivers. I kept having problems with interference. So then I got a Channel Plus modulator with the IR targets. It works great for me.

I have going thru this a DVD player, a Replay and 2 sat receivers going to 6 TV'S. I added an additional channel modulator to get the 2nd receiver to work. I picked up the Channel Plus 3025 from Smarthome.com.

Email me and I can give you more specifics.

John