Yonge was hired by WCBS-FM, where he helped introduce the "Oldies" format of popular songs to that station. After a few years, he returned to Florida, where he served as general manager of Mother WMUM, an early FM rock station in Palm Beach. After the demise of Mother in 1972, Yonge became a morning personality on Y100 WHYI in Fort Lauderdale/Miami. He was fired after the first day on the air, August 3, 1973. by WHYI National Program Director Buzz Bennett, who Roby had a personality conflict with. The next day he moved to the competitor WMYQ-FM, where he did the morning show.