Listen to the "101.5 KGB" radio station live. The "101.5 KGB" studio is located in San Diego, CA. Callsign: KGB-FM. Broadcasting region: San Diego, California. Start of broadcasting: 1950. Program format: Classic rock. Musical style: rock music ranging generally from the mid-1960s through the mid 1990s, primarily focusing on commercially successful blues rock and hard rock popularized in the 1970s AOR format. Target audience: 25–54 years old. Audience Reach: 1,386,932.