| Time (Eastern US) | Author | Comment (most recent last) | Actions |
| 1987-03-31 00:00:00 | | Call Sign changed from 850710MN to KMCC | Fix Delete Reply to |
| 1990-08-24 00:00:00 | | Call Sign changed from KMCC to KXTC | Fix Delete Reply to |
| 1992-10-19 00:00:00 | FCC App# 166320 | FCC approved station to begin licensed operation | Fix Delete Reply to |
| 1998-03-04 00:00:00 | FCC App# 247742 | License Renewed | Fix Delete Reply to |
| 1998-05-21 00:00:00 | FCC App# 265262 | FCC approved transfer of license from XTC, INC. to KGLX/KMFQ/KFXR L.L.C. | Fix Delete Reply to |
| 2007-07-19 00:00:00 | FCC App# 1183945 | FCC request to transfer license from CLEAR CHANNEL BROADCASTING LICENSES, INC. to GOODRADIO.TV LICENSE, LLC superceded | Fix Delete Reply to |
| 2011-07-15 08:40:11 | editor | verifiedtime changed to 7/15/2011 8:40:11 AM | Fix Delete Reply to |
| 2013-03-14 06:42:02 | | Licensee changed from CLEAR CHANNEL BROADCASTING LICENSES, INC. to MIDESSA BROADCASTING LIMITED PARTNERSHIP | Fix Delete Reply to |
| 2013-06-29 06:51:02 | editor | streamingURL changed to http://www.iheart.com/#/live/4796/?autoplay=true | Fix Delete Reply to |
| 2015-12-19 02:50:14 | editor | Station Web Site Reviewed | Fix Delete Reply to |
| 2016-04-29 14:33:14 | editor | Station Homepage Title changed from KXTC-FM - Gallup's Hit Music Station to 99.9 XTC - Gallup's Hit Music Station | Fix Delete Reply to |
| 2016-05-02 19:15:52 | editor | Station Web Site Reviewed | Fix Delete Reply to |
| 2018-03-21 00:00:00 | FCC App# 1780828 | FCC received request to transfer license from CLEAR CHANNEL BROADCASTING LICENSES, INC. to CLEAR CHAN. B/CASTING LICENSES, INC.,AS DEBTOR IN POSSESSION | Fix Delete 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 | Fix Delete Reply to |
| 2018-05-20 23:00:32 | editor | Station Homepage Title changed from 99.9 XTC - Gallup's Hit Music Station to 99.9 XTC - Gallup's Hit Music Station | Fix Delete Reply to |
| 2018-05-20 23:00:32 | editor | Automated Update of homepage URL from http://999xtc.iheart.com/ to https://999xtc.iheart.com/ | Fix Delete 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. | Fix Delete Reply to |
| 2018-10-10 00:00:00 | FCC App# 1796080 | FCC received request to transfer license from CLEAR CHAN. B/CASTING LIC., INC., AS DEBTOR IN POSSESSSION to CLEAR CHANNEL BROADCASTING LICENSES, INC. | Fix Delete Reply to |
| 2018-10-10 00:00:00 | FCC App# 1795707 | FCC received request to transfer license from CLEAR CHAN. B/CASTING LIC., INC., AS DEBTOR IN POSSESSSION to CLEAR CHANNEL BROADCASTING LICENSES, INC. | Fix Delete 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 | Fix Delete Reply to |
| 2019-04-24 00:00:00 | FCC App# 1799766 | FCC approved transfer of license from CLEAR CHAN. B/CASTING LIC., INC., AS DEBTOR IN POSSESSSION to CLEAR CHANNEL BROADCASTING LICENSES, INC. | Fix Delete Reply to |
| 2019-05-07 14:40:17 | editor | Station Web Site Reviewed | Fix Delete Reply to |
| 2025-08-02 21:49:20 | editor | Changed streaming URL to http://www.999xtc.com/ | Fix Delete Reply to |
| 2025-08-02 23:51:24 | editor | Updated Schedule URL to https://999xtc.iheart.com/schedule/ | Fix Delete Reply to |
| 2025-08-02 23:54:17 | editor | listenURL was Reset | Fix Delete Reply to |
| 2025-08-03 00:23:40 | editor | Updated Schedule URL to https://999xtc.iheart.com/ | Fix Delete Reply to |
