You sure can. Outdoor antennas like this Televes Diginova work just fine indoors, although they work even better if you put them outside on the roof. They’ll lose about half of their receiving power indoors, even if pointed out the window, but if you just got an antenna for a holiday gift, you don’t have to wait until the spring thaw to try it out.
Now, I’m not recommending that you put a big, 10-foot-long antenna inside. That probably wouldn’t be really popular with other members of your household. If you did do it, though, it would certainly work.
This brings up that there really isn’t a difference between an “outdoor” and “indoor” antenna, once you get past these two points:
Indoor antennas aren’t weatherproof. They may break more quickly, possibly after the first rainstorm.
Outdoor antennas can be really, really big and usually require some sort of post or stand.
If you’re willing to work with that, you can put up whatever kind of antenna you want. You could hang an antenna on a hook or on a short post from the ceiling, you could put an indoor antenna in a shaded, largely waterproof area, or you could find some other way to use the antenna you want in the place you want it.
So, don’t wait until May or June to start enjoying free live TV… get the antenna you want from Solid Signal now and just find a way to use it indoors if need be. You’ll be amazed at what you’re missing when you start watching free live HDTV!