I've never read exactly how Network Affiliate local channels work... Earl can you explain? I keep reading about local channel problems with HD broadcasting and everyone seems to be up in arms over it. The question is, who is responsible? Is NBC delivering garbage to the affiliates? Is WXIA, my local NBC affiliate responsible? Is DirecTV responsible? I have seen the problem myself, I read all the posts about people being angry about it... but I don't see any information about what the problem is. Someone/Some -Thing is at the root of this. If it is a network level problem, then how about names and email addresses of the heads of the Networks HD engineering departments. If its an affiliate issue, the same information for the locals. If it is a D* problem, maybe the mods can fill us in. I also know that there is at least one WXIA engineer on this site. Surely there are some Network or other affiliate engineers on the site as well who could weigh in?