WGPR advertising is cost effective and we travel everywhere you go. Reach thousands of new customers in their car, work, home, or play. If you like music and programs on WGPR, you'll love your business being heard on WGPR, while being overwhelmed with the results. Call our sales department today and ask about our advertising specials. ( 313 ) 259-9696 advertising on 107.5 fm WGPR, Detroit's affordable marketing alternative. Established in 1964, WGPR 107.5 FM was Michigan's first full-time fm station. It boasts an operating power of 50, 000 watts circular polarization with an effective 75-mile radius covering all of metro Detroit, its surrounding suburbs, portions of Ohio and Ontario, Canada. The Rhythm FM 107.5 is Detroit's Best Adult Choice! With an Urban Adult Contemporary format playing adult Rhythm & Blues and Jazz favorites from the 60's through the 90's.