| Time (Eastern US) | Author | Comment (most recent last) | Actions |
| 1985-10-01 00:00:00 | | Call Sign changed from KFRZ to KSOS | Reply to |
| 1986-01-16 00:00:00 | FCC App# 81993 | FCC approved station to begin licensed operation | Reply to |
| 1990-12-24 00:00:00 | FCC App# 148454 | License Renewed | Reply to |
| 1998-03-13 00:00:00 | | Call Sign changed from KLZX to KUUU | Reply to |
| 1998-05-01 00:00:00 | | Call Sign changed from KUUU to KRAR | Reply to |
| 2017-08-29 00:00:00 | FCC App# 1769661 | FCC received request to transfer license from SLC DIVESTITURE TRUST II (JIM BURGOYNE, TRUSTEE) to AEROSTAR COMMUNICATIONS, LLC | Reply to |
| 2017-12-22 00:00:00 | FCC App# 1774863 | FCC was notified license transfer is complete | Reply to |
