KQSR

KQSR is a commercial radio station in Yuma, Arizona, also serving El Centro, California. The station carries a classic hits format as "100.9 The River."
The station operates at 3,000 watts Effective radiated power, making it a Class A station. However, KQSR has been granted a U.S. Federal [Communications Commission] construction permit to upgrade to Class C2, increase ERP to 50,000 watts and decrease HAAT to 78 meters.

History

The station used to be known as "The Jet" and aired a classic rock format. It adopted the slogan "Star 100.9" and aired an adult contemporary format. In May 2009, Jeff Edwards, who hosted the weekday midday show, became Program Director. He has held that role, in addition to Music Director since 2009. His shows included The '80s Lunchbreak, an all-1980s hour and from 2010 to 2017 he also hosted a Saturday morning 1970s show, 70's Spotlight Saturday.
On December 15, 2023, KQSR flipped to classic hits. The station rebranded as "100.9 The River", and adopted the slogan "Yuma's Classic Hits". Stacy Lynn hosts the morning show with Michael Gallagher hosting afternoons. Program Director Jeff Edwards hosts a Saturday afternoon show.