No, this tv has a built in digital tuner.

Yes, All tv's 20"s or bigger were required to have the digital tuners as of 2006.

Yes, but have not used it yet.

Your question doesn't make sense. This is an old style, bulky CRT TV. It goes on a sturdy table of some sort. But it does have both the old NTSC and ATSC tuners. My OTA (over-the-air) digital broadcast reception has been very good.

Yes, up to 120 minutes.

Yes

Speakers are in front, includes Closed Captioning.

I don't see where you would use wall mounts for this model. It is a Digital CRT, which sits in the wall unit or on a stand. It has a remote included.

yes, in the box with the instructions

The dimensions listed above (28.77 x 22.83 x 26.18) make it seem like a tube TV that has a flat screen. In other words, it is not one of the thin flat panel TVs.