Bob E wrote:
How are you going to use it for HDTV? HDTV is a TV signal protocol, not
a communications method.

Not to be rude, but it's a simple question asked. The answer doesn't involve
the use to which it will be put.

But sure that does matter. Especially the signal frequency at which
you will use it, and the tolerable losses in the run of cable.

"HDTV" by itself does not tell enough. It could be terristrial broadcast,
cable TV, satellite TV.

Each of them has different characteristics w.r.t. frequencies in use
and losses that are tolerable.