Complex sentence: After stints at several small suburban Philadelphia talk radio stations in the late 1960s and early 1970s, he joined powerhouse WWDB-FM in Philadelphia where he hosted a popular radio talk show from 1975 until 2000 when the station switched formats to music.
Split into simpler sentences: After stints at several small suburban Philadelphia talk radio stations in the late 1960s and early 1970s. He joined powerhouse WWDB-FM in Philadelphia where he hosted a popular radio talk show from 1975 until 2000 when the station switched to music.