KGB-am - From Wikipedia
In the 1960s KGB was an important player in the San Diego AM Top 40 race, being one of the first markets for the Boss Radio format. In the 1970s, with its FM sister station KGB-FM, KGB became an early adopter and pioneer of what is now called the album oriented rock format. KGB-FM still plays classic rock on 101.5 MHz. The AM side of KGB returned to the top 40 format for a few years in the late 70s under the moniker "13K", with a good amount of success.
KGB AM became KCNN with an all-news format in 1982.
In the 1960s KGB was an important player in the San Diego AM Top 40 race, being one of the first markets for the Boss Radio format. In the 1970s, with its FM sister station KGB-FM, KGB became an early adopter and pioneer of what is now called the album oriented rock format. KGB-FM still plays classic rock on 101.5 MHz. The AM side of KGB returned to the top 40 format for a few years in the late 70s under the moniker "13K", with a good amount of success.
KGB AM became KCNN with an all-news format in 1982.