| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | DD2NU | 24 | 28.92 % | | 24 | 28.92 % | | 2 | C C D C C C | DL1FMG | 21 | 25.30 % | | 21 | 25.30 % | | 3 | C C D C | EM0I | 12 | 14.46 % | | 12 | 14.46 % | | 4 | C D C C C | F4DSK | 5 | 6.02 % | | 5 | 6.02 % | | 5 | C D C C | K1MK | 5 | 6.02 % | | 5 | 6.02 % | | 6 | D C D C | 9A1A | 2 | 2.41 % | | 2 | 2.41 % | | 7 | C D C | G1M | 2 | 2.41 % | | 2 | 2.41 % | | 8 | C D D C C | E77EA | 2 | 2.41 % | | 2 | 2.41 % | | 9 | C D D C | S53M | 2 | 2.41 % | | 2 | 2.41 % | | 10 | D C D C C C | 2E0CVN | 1 | 1.20 % | | 1 | 1.20 % | | 11 | D C D C C | 9A3VM | 1 | 1.20 % | | 1 | 1.20 % | | 12 | C C D D C C | IU01DG | 1 | 1.20 % | | 1 | 1.20 % | | 13 | C C D D C C C | OH73ELK | 1 | 1.20 % | | 1 | 1.20 % | | 14 | C C / C C D C C C | OY/DL1ZBO | 1 | 1.20 % | | 1 | 1.20 % | | 15 | C C D D C | OZ11A | 1 | 1.20 % | | 1 | 1.20 % | | 16 | C D C C C / D | K6DTT/1 | 1 | 1.20 % | | 1 | 1.20 % | | 17 | C C D D D D C C | SN1919PS | 1 | 1.20 % | | 1 | 1.20 % | |
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