| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | SP1AEN | 31 | 55.36 % | | 32 | 55.17 % | | | 2 | C C D C C | SP2QG | 10 | 17.86 % | | 10 | 17.24 % | | | 3 | C C D C | SN2U | 9 | 16.07 % | | 10 | 17.24 % | | | 4 | C C D D C C C C | HF90IARU | 2 | 3.57 % | | 2 | 3.45 % | | | 5 | D C D C C C C | 3Z8HPZK | 1 | 1.79 % | | 1 | 1.72 % | | | 6 | D C D D C C C C | 3Z90IARU | 1 | 1.79 % | | 1 | 1.72 % | | | 7 | D C D C | 3Z1K | 1 | 1.79 % | | 1 | 1.72 % | | | 8 | C D C C | N3RD | 1 | 1.79 % | | 1 | 1.72 % | |
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