I see lots of references to the RC65RX as being a two-way remote. I take it that it makes it easier to program other equipment. There is nothing about it in the User Guide I received with my HR24-500. Is there a place to download a manual for the RC65RX? Is it possible to program the RC65RX to control one DVR on IR and another on RF? I have been assuming that once you set the RC65RX for RF, then both DVR's have to be set for RF.