The document outlines several codes and conventions for radio advertisements. It discusses how radio ads typically include sound effects related to the content, dialogue from interviews, and music to set the tone. They also usually have a clear voiced, Standard English voiceover that may ask rhetorical questions and provides the air time and channel at the end. Several example ads are then analyzed for their adherence to these conventions around sound effects, voiceover language and style, inclusion of content clips, and scheduling information placement.