Just watch it. The end does not quite hold together, but up to the last 5 minutes this is a great movie.
Leonard Maltin/Plot synopsis:
Slater is terrific as Hard Harry, a high school kid by day who runs a pirate radio station by night, stirring up passions among his young listeners and enraging the adult population in the process. Though uneven, this does have some pertinent things to say that you don't always find in a youth-appeal film.