In April 1973, St. John began an almost 15-year stint at New York's WPLJ. For most of his years at WPLJ he was rated by Arbitron as the most-listened-to afternoon radio personality in America (source: ARB's "Drive-Time Dominaters"). He survived the station's transition from AOR to top 40 in 1983, and during that era, continued his Arbitron ratings success with that same ranking.
