They rarely work from a written script, but if one is needed, they do the research and writing. More often, disk jockeys just make up the program. Radio announcers also may operate the control board. At some stations they sell commercial time to advertisers and write the ads. Not all radio announcers play music.
Some broadcasters are hosts of call-in talk shows.
They introduce a topic for discussion, then let callers present their views. Other radio announcers present continuous news or sports reports. The best-known television broadcasters are news analysts. In large stations, announcers specialize in news, sports, or weather reporting. News broadcasters, or anchors, present news stories.