The Federal Communications Commission (FCC) has granted a total of 77 licenses and call signs in the category of Amateur license in O Fallon, Illinois. 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 |
|---|---|---|
| K9HOT | Gould, Richard C | 2008-02-20 |
| K9RLH | ACKER, NORMAN R | 2014-01-16 |
| KA9QNG | FLOYD JR, DAVID A | 2015-10-22 |
| KB4JND | DAVIS, AMORELLA M | 2013-01-08 |
| KB4UW | LEE, JOSEPH T | 2013-10-29 |
| KB8TFW | ROSSETTI, ANTHONY D | 2014-04-14 |
| KB9LOD | WILLMONT, ALFRED JAMES | 2015-07-16 |
| KB9MGR | LAVALLE, ROOSEVELT F | 2015-11-04 |
| KB9MXW | CARSON, VIOLA M | 2005-12-14 |
| KB9PNX | WILLMONT, KAREN D | 2007-01-12 |
| KB9VTN | Trainor, Marilyn J | 2009-12-18 |
| KC8TVI | Wilcox, Matthew D | 2022-06-17 |
| | ||
| KC9BDF | Heil, Daniel E | 2012-10-06 |
| KC9DAQ | Pyrdeck, Steven P | 2023-02-01 |
| KC9EIZ | Pixton, Christopher C | 2023-04-29 |
| KC9HIX | MILLER, SHAWN R | 2015-01-23 |
| KC9ISV | Hair, Richard A | 2015-11-24 |
| KC9JCN | GOODWIN JR, MALCOLM N | 2016-02-18 |
| KC9JCQ | CONTE, BETONY R | 2006-03-29 |
| KC9JCV | PRIDMORE, EDWARD J | 2006-03-29 |
| KC9JDG | YOUNG, JOSEPH A | 2016-01-15 |
| KC9JLJ | NELSON, JENNIFER L | 2016-04-27 |
| KC9JTH | Maness, Kenneth L | 2016-04-27 |
| KC9LJC | Gooch Jr, Herbert | 2017-02-09 |
| KC9OJT | Amateur Space Telemetry Radio Operations | 2008-10-03 |
| KC9QJK | McFadden III, Dennis P | 2009-08-26 |
| KC9RDR | Reichelt, Todd G | 2009-12-29 |
| KC9VOO | Gaudin, Stephen A | 2012-03-08 |
| KD9AQS | Myer, Danny R | 2014-03-12 |
| KD9BIC | Schmidt, Jason T | 2014-05-19 |
| KD9BIO | Wilson, William T | 2014-05-21 |
| KD9BQM | Noblitt, Jerolyn E | 2014-06-26 |
| KD9BQN | Noblitt, Steven B | 2014-06-26 |
| KD9DRT | Baxter, Jason L | 2015-04-27 |
| KD9DXM | Stapchuk, David J | 2015-05-15 |
| KD9EPG | Stiles Sr, Douglas W | 2015-09-22 |
| KD9FQC | Williamson, James P | 2016-03-02 |
| KD9GTH | McKleroy, Kevin H | 2016-08-10 |
| KD9HPG | Metro East Digital Radio Club | 2016-12-29 |
| KD9JCC | Goddard, Robert K | 2017-08-11 |
| KD9JNB | Southwestern Illinois Digital Group | 2017-10-23 |
| KD9KLA | Williams, Bobby J | 2018-03-12 |
| KD9LRF | Freeze, Harold D | 2018-09-06 |
| KD9LXK | Newton, Edgar J | 2018-11-02 |
| KD9MNQ | Hudson, Mark B | 2019-02-26 |
| KD9NCM | Kassebaum, Brandon W | 2019-05-01 |
| KD9NYW | Young, Nathaniel F | 2019-10-03 |
| KD9OVR | Jasper, Andrew W | 2020-02-12 |
| KD9PWX | PIPAS III, STEPHEN R | 2020-07-23 |
| KD9QMJ | Thomas, Kenneth C | 2020-09-30 |
| KD9RKF | Mueller, John J | 2021-01-21 |
| KD9RNJ | Aubuchon, Dennis S | 2021-01-28 |
| KD9SAC | Nyenhuis, Adam E | 2021-03-09 |
| KD9SDC | SALES, RAYMUNDO R | 2021-03-18 |
| KD9SPT | Lynn, Brian S | 2021-04-30 |
| KD9TFO | Baldwin, Steve E | 2021-08-09 |
| KD9UFK | Rakers, Bruce E | 2022-01-25 |
| KD9UUU | Von Tobel, Barry J | 2022-04-11 |
| KD9VXY | Key, William R | 2022-10-19 |
| KD9VZN | Lay, Zachary A | 2022-11-03 |
| KF4LAK | NORRIS, JAMES M | 2006-07-21 |
| KK4EO | WIEDERHOLD, DAVID A | 2018-12-06 |
| N0BIX | Fisher, Robert W | 2023-02-28 |
| N0HFU | La Benne, Raymond J | 2008-07-31 |
| N9CPU | HICKS JR, PERSHING | 2019-01-31 |
| N9GQQ | MULLER, ROBERT J | 2007-06-27 |
| N9PBD | HORINE, GREGORY L | 2022-03-30 |
| N9PBF | BECHTOLDT, JANA L | 2022-02-23 |
| N9VWD | CARSON, KENNETH G | 2013-10-17 |
| N9XTS | Garrett Jr, Elmer S | 2014-04-23 |
| N9XTU | HEIL, DANIEL N | 2014-07-31 |
| W4ZVZ | LONG, WILLIAM M | 2005-09-20 |
| WA9EZV | MC VICKAR, PAUL E | 2013-09-09 |
| WB0HCL | WATERS, LEO V | 2017-11-06 |
| WB4ACP | CASEY, DANIEL H | 2014-08-12 |
| WB9FHL | BECHTOLDT, JOHN R | 2017-08-26 |
| WD9GSP | HEPP, SIDNEY E | 2023-02-24 |
