Pump Up the Volume

Mark (Christian Slater) is an intelligent but shy teenager who has just moved to Arizona from the East Coast, His parents give him a shortwave radio so he can talk to his pals, but instead he sets up shop as pirate DJ Hard Harry, who becomes a hero to his peers while incurring the wrath of the local high school principal, When one of Harry's listeners commits suicide and Harry - inspired chaos breaks out at the school, the authorities are called in to put a stop to Harry's broadcasts.