Bob Trebor retired from KGO sometime in the middle to late 1990s after about a 35 year run. His name, of course, was an air name he came up with at the beginning of his career by simply reversing the spelling of his first name "Robert."
AFAIK he's still alive and well and living in retirement from the daily radio grind on the West Coast. The actor of the same name who's listed on Internet Movie Database is a much younger man, born in Philadelphia in the 1950s at at time when the Bob Trebor radio listeners know, who hosted late night talk on KGO for all those years, was already an adult and working in the broadcating industry back east.
Bob Trebor, the broadcaster, came from Rochester, New York, and would probably now be about 80 years old. I don't know if it was his first broadcast job, but early in his career in the 1950s he appeared as an announcer and personality in his home town on what's now WROC-TV, the first television station to sign on in Rochester. So he was already on the air by the time the other Robert Trebor was born. I also live and work in radio in Rochester, and remember seeing Bob Trebor on local TV during my early childhood. He is fondly remembered by old-timers in the business here who were around when TV was getting off the ground. He left Rochester TV in the late 1950s and eventually worked his way out to San Francisco, where he had joined KGO's fulltime staff by the early 60s.