Complex sentence: On 1986-09-10, the station changed its call sign to KBSR, on 1989-03-28 to KKUL, and on 1995-06-01 to the current KHDN.
Split into simpler sentences: On 1986-09-10, the station changed its call sign to KBSR. On 1995-06-01 to the current KHDN.