| Time (Eastern US) | Author | Comment (most recent last) | Actions |
| 1980-02-08 00:00:00 | FCC App# 2699 | FCC approved station to begin licensed operation | Reply to |
| 1980-05-22 00:00:00 | FCC App# 17431 | License Renewed | Reply to |
| 1983-05-16 00:00:00 | FCC App# 51938 | License Renewed | Reply to |
| 1985-08-20 00:00:00 | | Call Sign changed from KELI to KQZZ | Reply to |
| 1990-05-25 00:00:00 | FCC App# 143639 | License Renewed | Reply to |
| 1991-08-26 00:00:00 | FCC App# 154281 | FCC approved station to begin licensed operation | Reply to |
| 1995-08-11 00:00:00 | | Call Sign changed from KQZZ to KOAS | Reply to |
| 1999-07-19 00:00:00 | FCC App# 240130 | License Renewed | Reply to |
| 2000-01-19 00:00:00 | | Call Sign changed from KOAS to KIZS | Reply to |
| 2005-10-07 00:00:00 | | Call Sign changed from KIZS to KTBT | Reply to |
| 2008-10-13 23:55:15 | jbi001 | Successful Volunteer Test - 49 Seconds | Reply to |
| 2010-08-31 02:05:46 | | Successful automated test | Reply to |
| 2011-04-07 02:47:20 | | Successful automated test | Reply to |
| 2011-07-28 18:23:05 | | Successful automated test | Reply to |
| 2011-11-15 22:07:10 | florida fresh | Successful Volunteer Test (Windows) - 61 Seconds | Reply to |
| 2014-08-22 08:06:36 | editor | Station Web Site Reviewed | Reply to |
| 2015-03-18 02:56:45 | editor | Station Format updated from Contemporary Hits to Dance/Party Music | Reply to |
| 2015-03-18 02:56:54 | editor | Station Web Site Reviewed | Reply to |
| 2015-03-28 23:37:02 | editor | Changed streaming URL to http://www.iheart.com/live/1937/?autoplay=true&pname=1019&campid=play_bar&cid=main.html | Reply to |
| 2018-04-12 00:00:00 | FCC App# 1780828 | FCC approved transfer of license from CLEAR CHANNEL BROADCASTING LICENSES, INC. to CLEAR CHAN. B/CASTING LICENSES, INC.,AS DEBTOR IN POSSESSION | Reply to |
| 2018-10-10 00:00:00 | FCC App# 1799766 | FCC received request to transfer license from CLEAR CHAN. B/CASTING LIC., INC., AS DEBTOR IN POSSESSSION to CLEAR CHANNEL BROADCASTING LICENSES, INC. | Reply to |
| 2019-02-15 00:00:00 | FCC App# 1796080 | FCC request to transfer license from CLEAR CHAN. B/CASTING LIC., INC., AS DEBTOR IN POSSESSSION to CLEAR CHANNEL BROADCASTING LICENSES, INC. superceded | Reply to |
| 2020-10-20 00:00:00 | FCC App# 1816828 | FCC received request to transfer license from CLEAR CHANNEL BROADCASTING LICENSES, INC. to IHM LICENSES, LLC | Reply to |
| 2020-11-10 00:00:00 | FCC App# 1816828 | FCC approved transfer of license from CLEAR CHANNEL BROADCASTING LICENSES, INC. to IHM LICENSES, LLC | Reply to |
| 2025-08-02 15:06:34 | editor | Updated Schedule URL to https://921thebeat.iheart.com/schedule/ | Reply to |
