Digital antennas are kind of a disgrace in my opinion. Between the antenna not seeming to pick up a staticky signal and the networks not bothering to boost their cruddy signals, you might not be able to get that channel with a digital antenna. I'm betting that the station was fuzzy when it was an analog signal, btw.
Cable companies often have an option where you can get just the local channels + a few more for a modest price. It's less than 20 dollars where I live.