A:AnswerWe have used ours on our covered deck for a day at a time (without issue), then bring it back in again. I would not leave ours outdoors for any longer than that. They make tv's that are rated for outdoors (much much more expensive), but this one would likely not fare well if left outside for any period of several days at a time, in high humidity conditions, or if it got damp from a rain, etc.
A:AnswerIt depends on what over the air antenna you have as well as placement. I have a bottom floor apartment and use an amplified antenna. Have over 40 channels, all local ones.
A:AnswerI'd like to know also. I bought one yesterday *specifically* for use as a big monitor to attach to my computer via HDMI. I've not had any success in getting it talking yet.