KBJJ changed its call letters to KARZ, and switched from country to classic rock in 1997 following being purchased by KMHL/KKCK. 107.5 KARZ later segued into a mainstream rock format around 2000.
On October 16, 2017, 107.5 FM and 94.7 FM swapped their call letters: 94.7 FM changed their call letters to KARZ and 107.5 FM changed their call letters to KNSG. 94.7 FM rebranded their classic hits format with the KARZ call letters.[3]
On October 30, 2017, KNSG changed their format from rock to sports, branded as "The Fan". (info taken from northpine.com)