JB FM is a Brazilian radio station based in Rio de Janeiro. Founded in 1973, it broadcasts on 99.9 MHz FM. The station's programming focuses on adult contemporary music, featuring a mix of national and international hits from the past and present. JB FM also offers entertainment programs, humor segments, and promotions. The station provides news updates covering major events in Brazil and around the world, as well as commentary on current topics. With a long history spanning over 50 years, JB FM has established itself as one of the leading radio stations in the Rio de Janeiro metropolitan area, consistently ranking among the top in audience ratings.