When will TV be 100% HD?

When everyone in the world has HD TV's. It won't happen. There are people that run Windows 95 and have Dial-Up still. There are people that still only have black and white TV's. It will not happen for a long time.

Even if everyone gets a HDTV most programming will not go full HD since most companies do not want to invest in the equipment needed. Especially when it comes to satellite. (the satellites only have a fixed amount of bandwidth and upgrading them requires you to send someone into space to do it, it is a very expensive process. This is why there are always complaints about compression artifacts in HDTV they are trying to get as much as they can from the available bandwidth (PS most satellite companies as well as cable companies are nowhere close to using their full bandwidth but even with that, they wont be able to do every channel in 1080P or even 1080i. Most of the equipment was designed back when we considered 480p to be a breakthrough. Much of the equipment has not changed much since.

It can only be as high quality as the original recording. So people that enjoy watching shows like I Love Lucy, they can't watch it in higher quality than the original thing. I'm sorry, but it won't happen, because it has so many popular series that are old (like Everybody Loves Raymond) that simply weren't recorded in HD.

Yeah it won't happen because of old shows.

When my Grandma gets rid of her Black&White TV.... :s

'Dont need any of that new fangled HD3D holographic wotsits thank you very much."

The simple answer for OTA (Over-the-air) TV is never. The reason is that wireless companies are scrambling to get bandwidth from any/every source they can. One of those sources is OTA TV. Sixty to 15 or so years ago...the viewing public had access to OTA channels 2-83. Now...we have access to 7-51. Even this is going to shrink if the wireless companies can buy off the FCC from the OTA broadcasters. With their history of getting their way...wireless companies will again be the winner. The result being that you will see your TV channels disappearing.

The reason is that the FCC is proposing that instead of running your conventional TV tower several hundred feet high to hit as much area as possible...the broadcasters will need to erect "translator" towers in places which are served by full power TV. With more limited range/power...they will further shrink the reach of the signal. Even the fringe areas now will not have any TV at all. You may even see the broadcasters giving up on 720p/1080i to only offering 480p SD for all signals...because of the wireless companies. Want HD...you get satellite/cable and pay for ever increasing rates.