I just upgraded my home to HD. I used to have a 501 DVR with the Standard Definition (SD) Dish which has now been upgraded to the new HD Dish. I used to take my 501 DVR with me when I went to my second home and plugged in in to a 2nd SD dish I had installed there. I read that this new ViP211-HD is backwards compatable. Can I take this ViP211-HD to my second home and will it work with the older SD Dish? I know it won't work in HD mode but will it work in SD mode with the older Dish? Any insight would be great! Thanks.