In the early 1990s, the station's call sign switched to KRSO. In 1992, upon final sign-off of the beautiful music format on 97.5 FM KDUO in Riverside (now KLYY), the station referred listeners to KRSO as a similar format to what they had heard on KDUO. However, it was only a short time later that KRSO flipped to an all-talk format, using NBC Radio News and continuing to air NBC's Talknet programming at night.
