yeah the HD’s are the normal number point or dash something
11 has like 3 or 4
11-1, 11-2, 11-3 & 11-4 one of them is a 24/7 local weather & radar.
i think fox has 3 now normal 53, 53-1, 53-2 the difference is that 53-1 shows the non-hd stuff in 4:3 , 53-2 scalably stretches it to letterbox/wide screen