| Call | Name | City | State | Class | Old Call | Effective Date | Expiration Date | Status |
|---|---|---|---|---|---|---|---|---|
| K0AWG | GRAY, ANDREW | MARENGO | IA | E | KF0EFD | 03/23/2021 | 03/23/2031 | Active |
| K0EMV | Walton, Dennis D | Marengo | IA | G | 10/06/2015 | 11/28/2025 | Active | |
| K0VNV | RUSBULT, DONALD L | MARENGO | IA | E | KE0BTI | 08/10/2018 | 08/10/2028 | Active |
| K0YL | Keener, Mary J | Marengo | IA | E | 11/30/2012 | 02/23/2023 | Cancelled | |
| KB0NRT | KOLCZYK, MARTIN H | MARENGO | IA | G | 04/22/2014 | 07/13/2024 | Active | |
| KC0NXR | Crosby, Christopher B | Marengo | IA | T | 08/19/2002 | 08/19/2012 | Expired | |
| KC0USX | DAY, KYLIE M | MARENGO | IA | T | 06/20/2005 | 06/20/2015 | Expired | |
| KC3OVZ | Walker, Morgan D | Marengo | IA | T | 02/13/2020 | 02/13/2030 | Active | |
| KD0JNC | SCHLUTER, DAVID J | MARENGO | IA | G | 11/25/2019 | 11/25/2029 | Active | |
| KD0NUY | HINES, JAMES R | MARENGO | IA | G | 01/09/2021 | 03/09/2031 | Active | |
| KE0BTI | RUSBULT, DONALD L | MARENGO | IA | E | 09/24/2014 | 09/24/2024 | Cancelled | |
| KE0DOD | GRIGGS, TED L | MARENGO | IA | T | 03/18/2015 | 03/18/2025 | Active | |
| KE0DOK | KREIS, WILLIAM | MARENGO | IA | T | 03/18/2015 | 03/18/2025 | Active | |
| KE0EMF | Azevedo, Arthur A | Marengo | IA | G | 05/18/2015 | 05/18/2025 | Active | |
| KE0HBV | Softronics Amateur Radio Club | Marion | IA | 12/28/2015 | 12/28/2025 | Cancelled | ||
| KE0YYG | Erger, Mason J | Marengo | IA | G | 01/15/2020 | 01/15/2030 | Active | |
| KF0EFD | GRAY, ANDREW | MARENGO | IA | G | 03/02/2021 | 03/02/2031 | Cancelled | |
| KF0EIN | Gray, Noah | MARENGO | IA | T | 03/08/2021 | 03/08/2031 | Active | |
| KS0FT | Softronics Amateur Radio Club | Marion | IA | KE0HBV | 01/22/2016 | 01/22/2026 | Active | |
| W0IAE | SCHLUTER, DONALD F | MARENGO | IA | A | 12/05/2006 | 01/28/2017 | Expired |