The "CBS World News Roundup" is radio's longest lived news show, having started back in 1938. But in an article about the show, it notes
So does your local CBS affiliate still air the show? The full 10 minutes, the 8-minute mark, or even less?The network's 500 affiliates can choose to take the 10-minute Roundup or the truncated CBS News on the Hour. Only 20% (about 100 stations) choose the Roundup. Even when they do, most break away before it's over. Until early this year, WBBM in Chicago was the last big city holdout to broadcast the Roundup in its entirety. Then, it joined WCBS, New York; KNX, Los Angeles; KCBS, San Francisco and WCCO, Minneapolis, in pulling the plug at the 8-minute mark to return to local announcers.