Originally Posted by tenthplanet
Not always even running two sub-channels channel 5's picture looks as good (or better than channel2's) and channel 11 comes in a close second. It may just come down to quality of the network feed. The CW's seems quite good.
In my experience, the addition of a single, SD subchannel does not result in a very noticeable degradation in picture quality on the HD channel. However, the addition of third
SD subchannel does cause, I think, a very definite softening of the HD picture. This was true when channel 5 added a third subchannel. I remember being impressed with the razor sharp pictures on their local newscasts. But after 5.3 was added, they are, IMO, just "meh"-looking.
No, I think the channels with the sharpest looking HD picture are 2 and 9 and possibly 4, but not 5. And remember, channel 11 is only 720p, and not 1080i like the others. Thus it cannot be quite as sharp, although I will admit that it does look very good for 720p. Of course, any station can look lousy if the broadcast material is of poor quality, and there is plenty of that it times.