KBMG originally broadcasted on 105.1 FM, and served the Evanston, Wyoming area but in 2004 the station changed its call sign to KRMF.
The station, originally broadcasting on 106.1 FM, went on the air as KOTB on December 28, 1981 and primarily served the community of Evanston, Wyoming with a full-service format, playing adult contemporary music, airing local news updates, and some local high school and University of Wyoming sports. 
