| Time (Eastern US) | Author | Comment (most recent last) | Actions |
| 2006-07-12 00:00:00 | | Call Sign changed from KZJF to KJMO | Reply to |
| 2006-07-31 00:00:00 | FCC App# 1140169 | FCC approved station to begin licensed operation | Reply to |
| 2009-03-22 20:36:00 | | Successful automated test | Reply to |
| 2009-06-28 23:36:09 | jbi001 | Successful Volunteer Test - 201 Seconds | Reply to |
| 2009-08-15 18:43:56 | spanky1446 | Successful Volunteer Test - 60 Seconds | Reply to |
| 2010-11-24 15:41:10 | | Successful automated test | Reply to |
| 2014-09-22 01:35:42 | editor | Station Web Site Reviewed | Reply to |
| 2016-05-20 11:37:05 | editor | Station Web Site Reviewed | Reply to |
| 2018-03-28 00:00:00 | FCC App# 1781275 | FCC received request to transfer license from CUMULUS LICENSING LLC to THE MAINSTAY STATION TRUST LLC | Reply to |
| 2019-06-30 02:33:56 | editor | Station Homepage Title changed from Cumulus | KJMO-FM to Jefferson City's Cool Classic Hits | 97.5 KJMO | Reply to |
