For real.  I don't even know if this exists.

I need a projector that I can plug a digital antenna into and get local channels to project onto a screen.  What I have in mind is that I can set up the games this fall out in the garage AND at whatever campground we might inhabit any given Saturday.  I would just get the garage wired for cable but if what I'm looking for exists there's no need.  I'd rather go the route I have in mind if possible for the flexibility - the cable-in-garage route is insufficient in that we would have bring a TV camping.  Would rather not.

Ideas?  Suggestions?  I've done some Amazon-ing but am unclear as to the capabilities of what I've found.