The Federal Communications Commission (FCC) has granted a total of 161 licenses and call signs in the category of Amateur license in O Fallon, Missouri. Select a call sign from the table below to view its details such as the date of authorization, expiration date, service description, and so forth.
| Call Sign | License Holder Name | Date of Authorization |
|---|---|---|
| KE0QIR | Groves, Sam | 2018-03-02 |
| KE0QIY | Dierker, Michael | 2018-03-02 |
| KE0RNB | Palmer Jr, James S | 2018-05-01 |
| KE0RXM | Wilburn, Curtis E | 2018-05-24 |
| KE0SXU | Brown, Francis J | 2018-09-05 |
| KE0THQ | Ulmer, Jeffrey R | 2018-10-16 |
| KE0TLK | Bohnert, Lee F | 2018-10-30 |
| KE0UUP | Sheets Jr, Richard L | 2019-03-07 |
| KE0VBP | Parmenter, Bryan K | 2019-03-25 |
| KE0VDS | Hosking, David L | 2019-03-29 |
| KE0VWN | Bluhm, David L | 2019-05-30 |
| KE0VWT | Long Jr, James R | 2019-05-30 |
| | ||
| KE0VWV | Bredbenner, Bradley L | 2019-05-30 |
| KE0VWW | Bredbenner, Kimberly J | 2019-05-30 |
| KE0WBX | Tan, Ryan E | 2019-06-18 |
| KE0WJC | Clayton, Charles L | 2019-07-24 |
| KE0WMN | Bayne, Zach | 2019-08-12 |
| KE0YEI | Farrell, Michael J | 2019-10-22 |
| KE0YHC | Marsh, Donald G | 2019-11-06 |
| KE0YOX | Mace, Randy L | 2019-11-27 |
| KE0YPB | Pickell, Keenan J | 2019-11-27 |
| KE0YPC | Pickell, Jeffrey K | 2019-11-27 |
| KE0ZLG | REID IV, MERRITT C | 2020-02-19 |
| KE0ZRI | Lavoie Jr, John M | 2020-03-03 |
| KE4GMG | BROOKS, CHRISTOPHER T | 2013-09-21 |
| KE4LBW | PHELPS, MIKE S | 2014-07-15 |
| KE6HZS | FITCH, RICHARD M | 2005-10-19 |
| KF0AAW | Gunter, Christopher | 2020-04-30 |
| KF0BVS | KING, JAMES D | 2020-09-30 |
| KF0BWF | DAVIS, NATHAN R | 2020-10-01 |
| KF0FKT | Bauer, James F | 2021-04-28 |
| KF0FSD | Booth, Kacey L | 2021-05-19 |
| KF0GHL | Barker, Matthew C | 2021-08-02 |
| KF0JDH | Hardin, Cloyd H | 2022-05-10 |
| KF0JEZ | Childs, David W | 2022-05-12 |
| KF0KNL | Frazier, Austin | 2022-10-08 |
| KF0KXB | Merino, Liam F | 2022-11-23 |
| KF0LUB | Ransom, Lawrence B | 2023-03-07 |
| KF5XH | EVANS, THOMAS L | 2016-11-05 |
| KG5XK | NICHOLS, STEPHEN G | 2019-09-04 |
| KI0SR | Riedel, Paul N | 2003-11-20 |
| KK4SZD | GANCARZ, GLORIA J | 2013-08-05 |
| N0CEK | HERBERT, ALBERT S | 2015-11-14 |
| N0GL | Leu, Gary L | 2014-02-03 |
| N0GMI | COOK, DEBRA R | 2015-09-25 |
| N0HDL | ATKINSON, ALBERT D | 2016-01-19 |
| N0RJY | RICHARDSON, DANNY A | 2012-04-03 |
| N0WM | EGGELSTON, WILLIAM R | 2017-01-10 |
| N3MLT | Newton, David H | 2022-03-11 |
| N6QAB | KELLY, KEVIN M | 2007-06-29 |
| NV0R | WALKER, JAMES D | 2015-11-10 |
| WA0MUZ | NASH, THOMAS J | 2008-06-21 |
| WA0QQD | Reed Jr, John J | 2017-03-08 |
| WB0NEF | TEMPLE, JAMES S | 2020-10-14 |
| WB0OOL | Halley, James A | 2015-05-22 |
| WB0SAJ | BUSS, ROBERT H | 2017-01-17 |
| WB0TWQ | BRIGHTWELL, KENDALL R | 2016-01-08 |
| WB0YDQ | Hammers, Gerald C | 2014-11-13 |
| WD0DEJ | LEU, JUDITH A | 2017-05-11 |
| WD0EVJ | OBERHAUS, ROBERT M | 2014-01-23 |
| WD0HQH | SCHRODER, RANDALL L | 2022-10-04 |
