I have the Sony RM-V301 and the Hughes HD10-250. There was not a pre-programmed 3-digit code that would work...but performing the Search for Code did yield a result that allows for channel up/down, guide, Tivo forward, reverse, pause and a few others. Just to clarify the process:

Press and release the "S" button.
Press the button for Cbl/Sat.
Press the Channel + button while watching the light on the receiver that blinks a little when a remote signal is received. Continue the Ch+, Enter, Ch+, Enter...until you see the light blink. Then press Enter. For me I think I had to press Ch+ about 6 times and it found it.

Good luck to any who read this.