amfmsw said:
... air-checks of WCBS-FM 101.1 from 1989. ... with the imaging of "the Golden 101", they were playing Whitney Houston "How Would I Know", Kool & The Gang "Cherish", and Madonna "True Blue". Two currents/contemporaries/recurrents per hour. And they were very heavy on the Tommy Edwards, Duprees, Little Anthony style at the same time. THEY WERE ALSO #1!
WCBS-FM started including one or two currents or recurrents per hour during the first year they went into the format, but one needs to understand the context of that. WABC, the primary top-forty in the market at the time, played a lot of oldies, including from more than a couple of years before, as part of their approach to holding onto adult listeners. So the early CBS-FM audience was easily comfortable with hearing a new hit and a hit from fifteen years earlier on the same station.
That is much less common today in all markets and is non-existent in most markets. (That doesn't mean that it cannot be done. But it will be something that the audience isn't used to.)
As for WCBS-FM being #1, presumably you don't think the station was #1 overall in the NYC market at that moment, though it did have several periods of great success during its three decades in the format.
Jay