Know who you will be talking to - we cannot emphasize enough how much this can pay off down the road.

Know as much about the show and hosts as you can. What time of day is the show on? What format is the station? Where is it broadcast? Nearly every station has a website and some have audio streaming, so check them out. This research can help you tailor your message to the audience and get to know the style of your interviewer. Above all, get to know the show and context you will appear. Your hosts and producers will appreciate the effort.