Following eligibility lists contain N4LDB
 Club  | Timestamp | Geo Type | Club Ctr | Call | Grid | Distance |
| Northern Lights Radio Society | 2025-03-27 15:41:58 | 250 mile circle | EN24xx | N4LDB | EN13pm | 166.0 |
| Northern Lights Radio Society | 2025-01-20 18:19:09 | 250 mile circle | EN24xx | N4LDB | EN13pm | 166.0 |
| Northern Lights Radio Society | 2024-09-26 21:45:28 | 250 mile circle | EN24xx | N4LDB | EN13pm | 166.0 |
| Northern Lights Radio Society | 2024-09-26 21:40:17 | 250 mile circle | EN24xx | N4LDB | EN13pm | 166.0 |
| Northern Lights Radio Society | 2024-05-10 18:18:58 | 250 mile circle | EN24xx | N4LDB | EN13pm | 166.0 |
| Northern Lights Radio Society | 2024-04-17 21:56:03 | 250 mile circle | EN24xx | N4LDB | EN13pm | 166.0 |
| Sioux Empire ARC | 2023-06-08 23:22:56 | 175 mile circle | EN13on | N4LDB | EN13pm | 5.1 |