| Time (Eastern US) | Author | Comment (most recent last) | Actions |
| 1992-09-14 00:00:00 | | Call Sign changed from KOUH to KLTO | Reply to |
| 1995-01-31 00:00:00 | | Call Sign changed from KLTO to KQSY | Reply to |
| 1996-09-13 00:00:00 | FCC App# 228026 | FCC approved station to begin licensed operation | Reply to |
| 1997-06-18 00:00:00 | FCC App# 239922 | License Renewed | Reply to |
| 1997-12-19 00:00:00 | | Call Sign changed from KQSY to KMRX | Reply to |
| 2002-07-12 00:00:00 | | Call Sign changed from KMRX to KTBT | Reply to |
| 2005-10-07 00:00:00 | | Call Sign changed from KTBT to KIZS | Reply to |
| 2008-10-08 10:15:54 | gweldar | Successful Volunteer Test - 335 Seconds | Reply to |
| 2009-08-07 12:43:37 | editor | Quality rating set to 3 | Reply to |
| 2010-03-02 11:02:35 | jbi001 | Successful Volunteer Test (Windows) - 101 Seconds | Reply to |
| 2010-07-19 09:06:14 | 3tooz | Successful Volunteer Test (Windows) - 458 Seconds | Reply to |
| 2010-11-25 00:17:33 | | Successful automated test | Reply to |
| 2013-01-23 11:44:39 | | Successful automated test | Reply to |
| 2018-04-20 06:42:20 | | Licensee changed from CLEAR CHANNEL BROADCASTING LICENSES, INC. to CLEAR CHAN. B/CASTING LICENSES, INC.,AS DEBTOR IN POSSESSION | Reply to |
| 2018-04-25 17:10:28 | editor | Station Web Site Reviewed | Reply to |
| 2025-08-02 19:53:07 | editor | Updated Schedule URL to https://1015elpatron.iheart.com/schedule/ | Reply to |
