antennas will only pull in stations that are being broadcast with towers. In Phoenix, Az we have towers on South Mountain that send out signals for about a dozen local channels. You also need to let the antenna 'run through' its setup so it can find any stations that are available. This is why I don't think it would work for camping in the middle of nowhere.. need the broadcasting signals.
You also might want to try letting it run through its setup again to make sure that's all that's available in your area.