| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C | AA4RV | 3 | 27.27 % | | 3 | 27.27 % | | | 2 | C D C C C | K5LRK | 3 | 27.27 % | | 3 | 27.27 % | | | 3 | C D C C | K5XU | 2 | 18.18 % | | 2 | 18.18 % | | | 4 | C C D C | NF9Z | 2 | 18.18 % | | 2 | 18.18 % | | | 5 | C C D C C C | KE8FSR | 1 | 9.09 % | | 1 | 9.09 % | |
|