| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | K0EA | 152 | 53.52 % | | 224 | 54.90 % | | | 2 | C C D C | AF8C | 48 | 16.90 % | | 76 | 18.63 % | | | 3 | C D C C C | K1ESE | 42 | 14.79 % | | 56 | 13.73 % | | | 4 | C C D C C | AB3CX | 32 | 11.27 % | | 42 | 10.29 % | | | 5 | C C D C C C | KB1EFS | 10 | 3.52 % | | 10 | 2.45 % | |
|