KQSR is a commercial adult contemporary music radio station in Yuma, Arizona, broadcasting on 100.9 FM. The station used to be known as "The Jet" and aired a classic rock format. It adopted the slogan "Star 100.9" and airs an adult contemporary/Hot AC format. The Program Director since May, 2009 is Jeff Edwards, who also hosts the weekday midday show from 10am-3pm. His show includes The '80s Lunchbreak, an all 1980s hour from 11am to 1 pm. Jeff Edwards also hosts a Saturday morning 1970s show, 70's Spotlight Saturday from 8am until noon.