MATT TODD ARCHIVE · AMATEUR RADIO
Worked Callsigns
Stations worked across the amateur radio log
7,517 callsigns · active log records
Worked station locations
6,430 callsigns mapped · 1,087 without usable grids. Approximate historical grid centers; a callsign may appear in more than one grid.
| Callsign ↕ | QSOs ↓ | First contact ↕ | Most recent ↕ |
|---|---|---|---|
| KO4EHB | 1 | 2026-02-28 | 2026-02-28 |
| KO4EJX | 1 | 2020-09-15 | 2020-09-15 |
| KO4EMM | 1 | 2020-09-09 | 2020-09-09 |
| KO4EPC | 1 | 2020-07-15 | 2020-07-15 |
| KO4EPX | 1 | 2021-12-24 | 2021-12-24 |
| KO4FFK | 1 | 2021-10-09 | 2021-10-09 |
| KO4FQW | 1 | 2026-09-14 | 2026-09-14 |
| KO4FUD | 1 | 2026-05-24 | 2026-05-24 |
| KO4FZG | 1 | 2024-03-13 | 2024-03-13 |
| KO4GBB | 1 | 2025-11-03 | 2025-11-03 |
| KO4GBW | 1 | 2021-12-28 | 2021-12-28 |
| KO4GIA | 1 | 2026-05-24 | 2026-05-24 |
| KO4GNE | 1 | 2021-12-15 | 2021-12-15 |
| KO4GP | 1 | 2023-09-27 | 2023-09-27 |
| KO4HGY | 1 | 2020-11-04 | 2020-11-04 |
| KO4HIL | 1 | 2023-10-31 | 2023-10-31 |
| KO4HPP | 1 | 2022-04-13 | 2022-04-13 |
| KO4IAH | 1 | 2022-01-27 | 2022-01-27 |
| KO4ICI | 1 | 2022-07-17 | 2022-07-17 |
| KO4IFY | 1 | 2021-05-31 | 2021-05-31 |
| KO4ILS | 1 | 2026-02-21 | 2026-02-21 |
| KO4INQ | 1 | 2021-10-29 | 2021-10-29 |
| KO4IVS | 1 | 2021-11-29 | 2021-11-29 |
| KO4IXU | 1 | 2022-11-30 | 2022-11-30 |
| KO4JKV | 1 | 2022-04-12 | 2022-04-12 |
| KO4KG | 1 | 2022-04-12 | 2022-04-12 |
| KO4KSJ | 1 | 2022-09-28 | 2022-09-28 |
| KO4LTC | 1 | 2021-12-08 | 2021-12-08 |
| KO4MAO | 1 | 2022-06-24 | 2022-06-24 |
| KO4MCM | 1 | 2021-12-15 | 2021-12-15 |
| KO4MFX | 1 | 2021-11-03 | 2021-11-03 |
| KO4MSN | 1 | 2022-04-11 | 2022-04-11 |
| KO4NHP | 1 | 2021-11-18 | 2021-11-18 |
| KO4NLL | 1 | 2022-01-26 | 2022-01-26 |
| KO4NVP | 1 | 2026-08-20 | 2026-08-20 |
| KO4NWU | 1 | 2024-11-28 | 2024-11-28 |
| KO4O | 1 | 2023-11-16 | 2023-11-16 |
| KO4OCL | 1 | 2023-09-26 | 2023-09-26 |
| KO4OMO | 1 | 2021-10-29 | 2021-10-29 |
| KO4OPE | 1 | 2024-01-22 | 2024-01-22 |
| KO4PCP | 1 | 2022-04-14 | 2022-04-14 |
| KO4QHH | 1 | 2022-06-22 | 2022-06-22 |
| KO4QJN | 1 | 2021-10-06 | 2021-10-06 |
| KO4QXD | 1 | 2022-02-08 | 2022-02-08 |
| KO4RDG | 1 | 2022-08-10 | 2022-08-10 |
| KO4RGG | 1 | 2022-04-11 | 2022-04-11 |
| KO4RMT | 1 | 2023-07-04 | 2023-07-04 |
| KO4RWZ | 1 | 2021-09-29 | 2021-09-29 |
| KO4SKK | 1 | 2025-06-25 | 2025-06-25 |
| KO4SLH | 1 | 2023-05-22 | 2023-05-22 |