Complex sentence: In 1995, then owner, Barnstable Broadcasting, swapped formats with its KOOL 94.9 and its 99.3 signal-moving the popular oldies format to 99.3, "KOOL 99.3" WWKL-FM.
Split into simpler sentences: In 1995, then owner, Barnstable Broadcasting, swapped formats with its 94.9 and its 99.3 signal. At that time, 99.3 became an Oldies station, "KOOL 99.3" WWKL-FM.