Wagner entered radio broadcasting in 1965 at the age of 15 by volunteering at station KASK in Ontario, California. While still in school he also worked at local stations
KSPC,
KACE, and
KREL. After graduating
Chaffey High School in Ontario, he got a job doing the all-night shift for KYMS in
Santa Ana, California. 18 months later he was working at Los Angeles radio station
KNAC in 1969 when he was called into the U.S. Army and
served in Vietnam. While there, he worked at a 50,000 watt radio facility used by the Army for tactical purposes. Upon returning from Vietnam, Wagner moved to Illinois and worked at several radio stations there including
WTAO,
WJKL,
WROC, and
WYFE. In 1979, while working at the progressive rock radio station WJKL in Elgin, he interviewed musician
Muddy Waters From 2006 until 2011, Wagner was an instructor in Radio Broadcasting and faculty adviser for
Long Beach City College radio station
KCTY. He was thanked in 2011 by the college for his role in building the student radio station. In 2012, the station's management Global Jazz cut a full day from the blues program. During his 2012 summer pledge drive, Wagner successfully led an on-air revolt to bring back the Saturday show. Listeners overwhelmingly stepped up to demonstrate their commitment to the blues, and the additional day of blues programming was reinstated. He is a member of the
Blues Foundation. ==Radio show style==