All of my equipment is SD. Local channels recently became available, but had to install H20-600C-R receivers (HD) to get them. This has ruined Sunday Ticket for me because I can't use PREV channel to switch between games. When PREV is pressed, I get the nasty gram that says I'm not authorized. (Because it defaults to the HD channel?) Same problem if the channel number is entered from the numeric key pad. Have to enter the channel number then CHAN UP, CHAN DOWN to select the SD version. DTV support helped me set up a custom Guide that didn't show the HD channels, but that only reduces the guide clutter. No change in channel selection logic. (The HD channel is still available for the receiver to select.) I'll give up local channels and go back to cable, if I'm stuck with this nightmare. I'm NOT willing to enter the channel number, press GUIDE, and select the SD channel. Am I missing something simple here? Is there a different receiver that will work?