Bill Bradley, a popular disc jockey of the 1950s, died July 4 of unreported causesat the Eisenhower Hospital in Palm Desert. He was 82.A native of Detroit, he became a prominent deejay there before relocating to New York City. Bradley, whose real name was William Silbert, had his name changed at the behest of Milton Berle. Bradley was the originator of the original teenage TV dance show that emanated from Palisades Park in New Jersey. The weekly show showcased popular recording artists of the time.Bradley moved to Los Angeles where he worked for KMPC as a DJ and later KLOS-ABC as a time salesman. Bradley is survived by his brother Wayne.