| Updated Service Tag assignments for 3 talkgroups(Mason City Police) | N0ZJT | 2020-08-08 13:24:26 |
| Updated Service Tag assignments for 1 talkgroups(Mason City Fire) | N0ZJT | 2020-08-08 13:24:14 |
| General text description deleted | N0ZJT | 2020-08-08 13:24:04 |
| Updated Service Tag assignments for 6 talkgroups(Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2020-08-08 13:23:42 |
| Updated Service Tag assignments for 3 talkgroups(Mason City Fire) | N0ZJT | 2020-04-13 18:11:31 |
| (1) Talkgroups Updated (Mason City Services) | N0ZJT | 2019-01-18 13:45:59 |
| Added Talkgroup 58352 Public Works(Mason City Services) | N0ZJT | 2019-01-18 13:45:43 |
| Added Talkgroup 57376 Public Works(Mason City Services) | N0ZJT | 2019-01-18 13:45:21 |
| Added Talkgroup 58512 Street Department(Mason City Services) | N0ZJT | 2019-01-18 13:44:58 |
| Added Talkgroup 58432 Water Department(Mason City Services) | N0ZJT | 2019-01-18 13:44:33 |
| (1) Talkgroups Updated (Mason City Services) | N0ZJT | 2019-01-18 13:44:12 |
| Added Talkgroup 58368 Street Department(Mason City Services) | N0ZJT | 2019-01-18 13:44:06 |
| Changed Talkgroup Category: Mason City Services to Mason City Services(Mason City Services) | N0ZJT | 2019-01-18 13:43:39 |
| (3) Talkgroups Updated (Mason City Fire) | N0ZJT | 2019-01-18 13:43:01 |
| Changed Talkgroup Category: Mason City Fire to Mason City Fire(Mason City Fire) | N0ZJT | 2019-01-18 13:42:29 |
| (1) Talkgroups Updated (Mason City Fire) | N0ZJT | 2019-01-18 13:42:24 |
| Added Talkgroup 58064 Fireground(Mason City Fire) | N0ZJT | 2019-01-18 13:42:18 |
| Updated Function Tag assignments for 1 talkgroups(Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2019-01-18 13:41:31 |
| (1) Talkgroups Updated (Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2019-01-18 13:40:58 |
| Added Talkgroup 57440 Mason City Animal Control(Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2019-01-18 13:40:51 |
| (1) Talkgroups Updated (Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2019-01-18 13:40:04 |
| Changed Talkgroup Category: Cerro Gordo Sheriff/Mason City Police to Cerro Gordo Sheriff/Mason City Police(Cerro Gordo Sheriff/M | N0ZJT | 2019-01-18 13:39:38 |
| (2) Talkgroups Updated (Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2019-01-18 13:39:18 |
| (1) Talkgroups Updated (Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2019-01-18 13:39:13 |
| Changed Talkgroup Category assignments for 1 talkgroups(Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2019-01-18 13:38:55 |
| (1) Talkgroups Updated (Mason City Police) | N0ZJT | 2019-01-18 13:38:39 |
| Changed Talkgroup Category: Cerro Gordo Sheriff to Cerro Gordo Sheriff/Mason City Police(Cerro Gordo Sheriff/Mason City Police) | N0ZJT | 2019-01-18 13:38:03 |
| Added Talkgroup 57600 EMS to Hospital | N0ZJT | 2016-07-12 13:52:03 |
| Deleted 2 talkgroup(s) | timkilbride | 2014-08-17 02:02:17 |
| Deleted 1 talkgroup(s) | timkilbride | 2011-02-17 21:54:47 |
| Updated Talkgroups (16 Updated) | timkilbride | 2011-02-17 21:54:39 |
| Updated Talkgroup Categories | timkilbride | 2011-02-17 21:50:54 |
| Default Location Data Updated to 43.0832952 / -93.2668709 / 18 | timkilbride | 2011-02-17 20:00:47 |
| Updated Talkgroups (2 Updated, 0 Deleted) | egrams | 2008-06-23 21:46:18 |
| Added Talkgroup 58544 Mason City Transit Bus Operations | egrams | 2008-06-23 21:46:03 |
| Updated General System Info | ericcarlson | 2007-10-02 20:40:32 |
| Changed talkgroups | ericcarlson | 2006-07-07 21:43:49 |
| Added a single talkgroup | ericcarlson | 2006-04-25 20:29:53 |
| Added a single talkgroup | ericcarlson | 2006-04-25 20:29:26 |
| Changed talkgroups | ericcarlson | 2006-04-25 20:29:19 |
| Changed talkgroup category names | ericcarlson | 2006-04-25 20:28:48 |
| Changed talkgroups | ericcarlson | 2006-04-25 20:28:21 |
| Updated General System Info | ericcarlson | 2006-04-25 20:25:07 |
| Changed talkgroups | loumaag | 2005-12-28 22:40:10 |
| Added a set of talkgroups | loumaag | 2005-12-28 22:39:57 |
| Added a set of talkgroups | loumaag | 2005-12-28 22:38:51 |
| Added a set of talkgroups | loumaag | 2005-12-28 22:37:49 |
| Added a single talkgroup | ericcarlson | 2005-08-10 01:17:34 |
| Added a single talkgroup | ericcarlson | 2005-08-10 01:17:24 |
| Changed a system text block | ericcarlson | 2005-08-09 18:44:11 |
| Updated General System Info | ericcarlson | 2005-08-09 18:43:47 |
| Changed talkgroups | ericcarlson | 2005-08-09 18:41:53 |
| Changed talkgroup category names | kd4ygg | 2005-03-08 14:44:39 |
| Changed talkgroups | kd4ygg | 2005-03-08 14:44:09 |
| Changed Site-001 | ericcarlson | 2004-07-05 14:07:12 |
| Changed Site-001 | Thunderbolt | 2003-06-06 03:03:57 |
| Migrated System | FPO703 | 2003-06-05 22:46:19 |
