keywords: oldies wcbs fm 70s 60s
text: New oldies approach a boon for WCBS-FM ratings, WCBS-FM (101.1) is convinced that its new, tighter mix of  #39;60s and  #39;70s oldies is the way to go.  quot;As we #39;ve said all along, we don #39;t feel WCBS-FM needs drastic changes, quot; says vice president Chad Brown.