Ok, I was on Dish Network's website and they state you can purchase a OTA through them. Reasoning for this is I like WGN and watch the cubs a lot and would like WGN-HD. After calling them and confirming that I can purchase a OTA from them the lady said its not offered in my area. She said that I would need to go to Radio Shack and buy one...Do these go on the roof or what? I went on WGN.com and they said Dish Network offers a OTA for HD.