I think it was an F.C.C. requirement at one time to sound as boring as Howard Cossell ! But as they got more into R&R, the nasal tones went away & personalities emerged. We had a REAL cast of strange ones here in Chi ! If you can find a book, possibly online, "Clark Weber's Rock and Roll Radio" The Fun Years, 1955-1975 Outstanding read, as Weber worked both AM & FM stations in his career. He was the major name on WLS (890am) in Chi for a long time, then switched to WCFL(1000am) and later to FM. WLS was a clear-channel station, only one on the frequency in the country. Don't know if you were able to get it at night out in Cali. but most of the country could get it at various times. I thought it supremely ironic when he recently passed away.....he was 89 years old ! on air tag line was "WLS The Big 89"