Pixelation on HD channels.
Poor picture at home. Trying to watch the NCAA semi-finals on channel 1030 which is the TBS HD channel. Constant pixelization and occasional screen freezes. This has been happening on various other channels the last week or two also. Seems to me that not all those channels are sending a poor signal. Please make whatever adjustments you need, like maybe re-aim the dish, or find out what piece of equipment on YOUR side is causing this issue.