| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0LAF | 178 | 38.28 % | | 178 | 36.55 % | | | 2 | C D C C | K0EG | 91 | 19.57 % | | 91 | 18.69 % | | | 3 | C C D C C C | DL5RBW | 79 | 16.99 % | | 79 | 16.22 % | | | 4 | C C D C C | AA2BJ | 53 | 11.40 % | | 53 | 10.88 % | | | 5 | C C D C | AA6X | 49 | 10.54 % | | 49 | 10.06 % | | | 6 | C D C | K1B | 15 | 3.23 % | | 15 | 3.08 % | |
|