Why do I have 2 same channels on my Dish?

Question

I have a Dish 500, and when I turn to watch a network channel, like CBS, NBC, FOX, ABC, CW, why do I have 2 channels of them, and it says HD, and of course I'm glad I have HD but when I turn to the second one, but why do I have two channels of them each?

Answer 1

One is HD the other is standard transmission signal.  Seems silly to me too.  I have the same thing.  The non-HD is a bit fuzzier for what its worth.

Answer 2

one is standard and one is hd