I was delighted to find out the RC24 remotes that came with my two HR20s were RF capable. I have set up one of my remotes for RF operation. While most of the functions do work via RF the volume control does not. TV Input does not work with RF either. Is this a problem with my remote or my setup, or is this the way it is supposed to work? Does anyone know? The TV in question is a Samsung LN-S2651. I have followed the instructions to set the volume control. It does work via IR. It seems odd that the all of the other functions would work with RF and volume control would not.