| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AA1K | 232 | 33.00 % | | 235 | 33.24 % | | 2 | C C D C C | AA1ON | 202 | 28.73 % | | 202 | 28.57 % | | 3 | C C D C C C | DL1FMG | 114 | 16.22 % | | 114 | 16.12 % | | 4 | C D C C | D0RM | 76 | 10.81 % | | 76 | 10.75 % | | 5 | C D C C C | F5ILS | 31 | 4.41 % | | 31 | 4.38 % | | 6 | C D C | E2X | 10 | 1.42 % | | 11 | 1.56 % | | 7 | C D D C | A44A | 9 | 1.28 % | | 9 | 1.27 % | | 8 | C D D C C | A61EK | 6 | 0.85 % | | 6 | 0.85 % | | 9 | D C D C C | 4X1EL | 6 | 0.85 % | | 6 | 0.85 % | | 10 | D C D C | 3Z1K | 6 | 0.85 % | | 6 | 0.85 % | | 11 | D C D C C C | 2E0CVN | 3 | 0.43 % | | 3 | 0.42 % | | 12 | C C D D C | OG60F | 2 | 0.28 % | | 2 | 0.28 % | | 13 | D C D D C | 4U73B | 1 | 0.14 % | | 1 | 0.14 % | | 14 | D C D D D C | 3Z100I | 1 | 0.14 % | | 1 | 0.14 % | | 15 | C C D / C C D C C | IH9/OK6RA | 1 | 0.14 % | | 1 | 0.14 % | | 16 | C D D C C C | E21YDP | 1 | 0.14 % | | 1 | 0.14 % | | 17 | C C D D D C | YR100R | 1 | 0.14 % | | 1 | 0.14 % | | 18 | C C / C C D C C | ZA/LZ1MS | 1 | 0.14 % | | 1 | 0.14 % | |
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