Complex sentence: On April 19,1965, after weeks of speculation, WINS changed its format radically, becoming the third all-news radio station in the United States, going with the format around the clock.
Split into simpler sentences: On April 19,1965, after weeks of speculation, WINS changed its format radically. It becoming the third radio station in the United Statesto attempt an all-news format, going with the new programming around the clock.