I'm not sure, my biggest problem is that most of my channels (except two, CBS and MyNetworkTV) are that '2Edge' crap that makes them all hit and miss if any kind of weather other than a sunny/perfectly calm day happens. CBS/MyNetworkTV will work during a tornado warning. but the others, crap.
I have currently a Phillips indoor
HDTV antenna with adjustable 50db gain and it works great. i just have to aim it every time i change the channel.
I'm thinking of tinkering around with non-powered VHF/UHF oldies and see if i can 'build' a outdoor antenna, run the cable indoors, and hook a amp in line and then the box, since using my new antenna outdoors if any rain happens it won't be too good for the antenna. the new trailer home i got has a built-in roof antenna that retracts but it's inoperative, won't crank up and some nimrod cut the wire off so it's useless.