Operating at 89.1 MHz , it is known on - air as Classical 89 .
KBYU - FM is a classical music radio station run by Brigham Young University in Provo , Utah .
Operating at 89.1 MHz , KBYU - FM is known on - air as music radio station   .
KBYU - FM is a classical music radio station run by Brigham Young University in Provo , Utah .