| Time (Eastern US) | Author | Comment (most recent last) | Actions |
| 1979-11-30 00:00:00 | FCC App# 12151 | License Renewed | Fix Delete Reply to |
| 1982-11-19 00:00:00 | FCC App# 44962 | License Renewed | Fix Delete Reply to |
| 1985-06-10 00:00:00 | FCC App# 76516 | FCC approved station to begin licensed operation | Fix Delete Reply to |
| 1989-12-14 00:00:00 | FCC App# 130974 | License Renewed | Fix Delete Reply to |
| 1996-11-26 00:00:00 | FCC App# 230220 | License Renewed | Fix Delete Reply to |
| 1998-10-16 00:00:00 | FCC App# 271034 | FCC approved station to begin licensed operation | Fix Delete Reply to |
| 2004-11-26 00:00:00 | FCC App# 1001897 | License Renewed | Fix Delete Reply to |
| 2008-10-07 03:51:18 | jbi001 | Successful Volunteer Test - 94 Seconds | Fix Delete Reply to |
| 2009-08-05 17:40:24 | editor | Ads turned on in Station_check | Fix Delete Reply to |
| 2009-08-05 17:40:27 | editor | Successful Volunteer Test - 65 Seconds | Fix Delete Reply to |
| 2009-08-05 17:40:31 | editor | Quality rating set to 5 | Fix Delete Reply to |
| 2009-11-13 09:30:03 | WesternMA | Successful Volunteer Test - 77 Seconds | Fix Delete Reply to |
| 2010-02-14 14:15:14 | SumItUp | Successful Volunteer Test (Windows) - 62 Seconds | Fix Delete Reply to |
| 2010-06-10 18:53:11 | 3tooz | Successful Volunteer Test (Windows) - 122 Seconds | Fix Delete Reply to |
| 2010-06-10 18:53:17 | 3tooz | Quality decreased by 1 | Fix Delete Reply to |
| 2011-04-07 02:54:11 | | Successful automated test | Fix Delete Reply to |
| 2014-04-08 00:00:00 | FCC App# 1508392 | License Renewed | Fix Delete Reply to |
| 2015-03-29 11:07:47 | editor | Changed streaming URL to http://www.iheart.com/live/3506/?autoplay=true&pname=2121&campid=play_bar&cid=main.html | Fix Delete Reply to |
| 2015-11-28 19:33:23 | charlottenc | Station Web Site Reviewed | Fix Delete Reply to |
| 2018-04-20 06:42:20 | | Licensee changed from CAPSTAR TX, LLC to CAPSTAR TX, LLC, AS DEBTOR IN POSSESSION | Fix Delete Reply to |
| 2018-05-13 17:12:53 | editor | Station Web Site Reviewed | Fix Delete Reply to |
| 2018-10-10 00:00:00 | FCC App# 1795653 | FCC received request to transfer license from CAPSTAR TX, LLC, AS DEBTOR IN POSSESSION to CAPSTAR TX, LLC | Fix Delete Reply to |
| 2018-10-10 00:00:00 | FCC App# 1787183 | FCC received request to transfer license from CAPSTAR TX, LLC, AS DEBTOR IN POSSESSION to CAPSTAR TX, LLC | Fix Delete Reply to |
| 2019-02-15 00:00:00 | FCC App# 1796044 | FCC request to transfer license from CAPSTAR TX, LLC, AS DEBTOR IN POSSESSION to CAPSTAR TX, LLC superceded | Fix Delete Reply to |
| 2019-05-03 06:42:19 | | Licensee changed from CAPSTAR TX, LLC, AS DEBTOR IN POSSESSION to CAPSTAR TX, LLC | Fix Delete Reply to |
| 2020-10-20 00:00:00 | FCC App# 1816957 | FCC received request to transfer license from CAPSTAR TX, LLC to IHM LICENSES, LLC | Fix Delete Reply to |
| 2021-04-04 08:10:26 | editor | Station Homepage Title changed from Z-104 - Madison's #1 Hit Music Station to Z104 - Madison's #1 Hit Music Station | Fix Delete Reply to |
| 2024-02-14 02:32:04 | editor | Station Web Site Reviewed | Fix Delete Reply to |
| 2025-08-03 00:53:29 | editor | Updated Schedule URL to https://z104fm.iheart.com/schedule/ | Fix Delete Reply to |
