| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | DM1A | 60 | 29.56 % | | 60 | 29.56 % | | 2 | C C D C C | DA0DX | 57 | 28.08 % | | 57 | 28.08 % | | 3 | C C D C C C | DK0RPO | 45 | 22.17 % | | 45 | 22.17 % | | 4 | C D C C C | F5HTR | 16 | 7.88 % | | 16 | 7.88 % | | 5 | C D D C C | S51YI | 4 | 1.97 % | | 4 | 1.97 % | | 6 | C D C | G4P | 4 | 1.97 % | | 4 | 1.97 % | | 7 | C D D C | E70T | 4 | 1.97 % | | 4 | 1.97 % | | 8 | D C D C | 9A5D | 3 | 1.48 % | | 3 | 1.48 % | | 9 | D C D C C | 9A3JH | 2 | 0.99 % | | 2 | 0.99 % | | 10 | C C D D D C C | OL901AA | 2 | 0.99 % | | 2 | 0.99 % | | 11 | C C D D C C | OG30YL | 2 | 0.99 % | | 2 | 0.99 % | | 12 | C C D D C C C C | DF70DARC | 1 | 0.49 % | | 1 | 0.49 % | | 13 | C D C C | F5VV | 1 | 0.49 % | | 1 | 0.49 % | | 14 | C C D D C C C | PA75PKZ | 1 | 0.49 % | | 1 | 0.49 % | | 15 | C C D D C | EI20C | 1 | 0.49 % | | 1 | 0.49 % | |
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