Well, after replacing the H10 receiver with DirecTV's HR20 receiver, I have no problem with power codes - I had to manually learn the codes though.

The major issue now is that the remote won't turn of the Sat receiver. When I use the "Try and Learn" capability to test the IR codes - discrete On and Off codes work fine. However, when the activity turns off the system, the Sat receiver is left with the power on. When the Sat receiver is turned off, and I select the Watch Sat activity, the Sat power turns on with no issues - for some reason the remote just won't turn it off. Anyone else have this happen to them?