
| Call | Name | City | State | Class | Old Call | Effective Date | Expiration Date | Status |
|---|---|---|---|---|---|---|---|---|
| AA0XS | MC LARNAN, PHILIP J | HUMBOLDT | IA | E | N0RXX | 01/03/2014 | 01/18/2024 | Active |
| AB0KN | MILLER, LYNN J | HUMBOLDT | IA | E | KC0HNQ | 12/30/2019 | 03/25/2030 | Active |
| AB0UQ | Thompson, Richie J | Humboldt | IA | E | KD7COB | 08/18/1998 | 08/18/2008 | Cancelled |
| K0HU | Thompson, Richie J | Humboldt | IA | E | AB0UQ | 11/24/2022 | 06/07/2032 | Active |
| KA0PPR | SOLBECK, BEVERLY J | HUMBOLDT | IA | N | 02/27/2010 | 05/08/2020 | Expired | |
| KA0UAY | MILTNER, CURT P | HUMBOLDT | IA | G | WA6ZCH | 11/06/1990 | 11/06/2000 | Expired |
| KB0AJC | SCHWENDEMANN, LYLE T | HUMBOLDT | IA | N | 10/17/2007 | 11/11/2017 | Expired | |
| KB0BAC | GREEN, GARY J | HUMBOLDT | IA | G | 11/30/2007 | 02/25/2018 | Expired | |
| KC0HNQ | MILLER, LYNN J | HUMBOLDT | IA | T | 03/25/2000 | 03/25/2010 | Cancelled | |
| KC0QBM | Fosseen, Scott D | Humboldt | IA | T | 05/15/2013 | 05/22/2023 | Active | |
| KD7COB | Thompson, Richie J | Humboldt | IA | E | 08/18/1998 | 08/18/2008 | Cancelled | |
| KE0DGT | Bonde, Andrew | Humboldt | IA | T | 02/23/2015 | 02/23/2025 | Active | |
| KE0LEZ | STEWART-ELLIS, CONSTANCE L | HUMBOLDT | IA | T | 11/30/2016 | 11/30/2026 | Active | |
| KE0SEH | Bowman, Ryan M | Humboldt | IA | T | 06/15/2018 | 06/15/2028 | Active | |
| KF0AZR | Drews, Mitchell R | Humboldt | IA | G | 07/27/2020 | 07/27/2030 | Active | |
| KF0DQD | Barber, Sidney C | Humboldt | IA | T | 02/03/2021 | 02/03/2031 | Active | |
| KF0ERW | ECHEVARRIA, ARIEL R | HUMBOLDT | IA | G | 03/19/2021 | 03/19/2031 | Cancelled | |
| KF0HLC | Boyd, Jeffry J | Humboldt | IA | G | 12/13/2021 | 12/13/2031 | Active | |
| KF0HYN | Boyd, Lucinda M | Humboldt | IA | T | 02/15/2022 | 02/15/2032 | Active | |
| KI4ATM | Smith, Neil J | Humboldt | IA | E | 02/25/2014 | 06/12/2023 | Active | |
| N0GIV | SOLBECK, ROBERT G | HUMBOLDT | IA | E | KA0PPS | 02/27/2010 | 05/08/2020 | Cancelled |
| N0GIZ | SCHWENDEMANN, PATRICIA K | HUMBOLDT | IA | G | 07/07/2015 | 07/07/2025 | Active | |
| N0HLP | BENTZ, JOHN G | Humboldt | IA | T | 07/21/2006 | 08/07/2016 | Expired | |
| N0ZYS | VITZTHUM, SHANNON C | Humboldt | IA | E | 01/07/2014 | 01/18/2024 | Active | |
| W0KED | ECHEVARRIA, ARIEL R | HUMBOLDT | IA | G | KF0ERW | 04/10/2021 | 04/10/2031 | Active |
| WA0OVM | STANFORD, STEPHEN D | Humboldt | IA | G | 04/12/2022 | 04/12/2032 | Active | |
| WB0QAT | BAUER, GARTH D | HUMBOLDT | IA | A | 05/18/2005 | 05/25/2015 | Expired | |
| WB0QYY | BADE, JANET E | HUMBOLDT | IA | N | 02/01/2005 | 02/01/2015 | Expired | |
| WB0RKO | BLAKESTAD, WALLACE F | HUMBOLDT | IA | G | 02/01/2005 | 04/22/2015 | Expired |