It switched to the all-news format on April 19, 1965, going with that format around the clock.
The station is owned by Radio One and airs an all-news format.
The station had carried an all-news format since December 1999, identifying itself as "Info 690".
As of April 3, 2006, it operates in an all-news format, branded 660 News.
On June 25, 2012, the station transitioned to an all-news and information format.
The all-news format, however, would end in 2006 for a number of reasons.
Radio programs, from all-news formats to talk shows, were consumed by reaction to Jordan's return to the Garden.
Early on, there had been speculation that either station would drop the all-news format, but these notions were squelched rather quickly.
The station programmed an all-news format in its early days.
In 1995, the station moved to an all-news format.