| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | HF5WIM | 338 | 67.47 % | | 483 | 63.22 % | | | 2 | C C D C | HF1K | 81 | 16.17 % | | 160 | 20.94 % | | | 3 | C C D C C | SN1OZ | 73 | 14.57 % | | 100 | 13.09 % | | | 4 | D C D C | 3Z0X | 2 | 0.40 % | | 8 | 1.05 % | | | 5 | D C D C C C | 3Z3AHK | 2 | 0.40 % | | 3 | 0.39 % | | | 6 | D C D C C | 3Z1NY | 1 | 0.20 % | | 2 | 0.26 % | | | 7 | C C D D C C | HF55GR | 1 | 0.20 % | | 2 | 0.26 % | | | 8 | D C D D C C C | 3Z55PEF | 1 | 0.20 % | | 1 | 0.13 % | | | 9 | C C D D C C C C | SN30KSRG | 1 | 0.20 % | | 1 | 0.13 % | | | 10 | C C D D C C C | SP40KWA | 1 | 0.20 % | | 2 | 0.26 % | |
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