| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CS7AOL | 333 | 40.81 % | | 392 | 41.13 % | | 2 | C C D C C | AA5AT | 209 | 25.61 % | | 246 | 25.81 % | | 3 | C D C C C | F1MWV | 119 | 14.58 % | | 133 | 13.96 % | | 4 | C D C C | F2IL | 70 | 8.58 % | | 84 | 8.81 % | | 5 | C C D C | AB4V | 46 | 5.64 % | | 55 | 5.77 % | | 6 | D C D C C C | 2E0ERO | 15 | 1.84 % | | 15 | 1.57 % | | 7 | C D D C C | A41KT | 5 | 0.61 % | | 9 | 0.94 % | | 8 | D C D C C | 4Z4DX | 5 | 0.61 % | | 5 | 0.52 % | | 9 | C D D C | R71W | 2 | 0.25 % | | 2 | 0.21 % | | 10 | C C D C C / D | IQ1IV/1 | 2 | 0.25 % | | 2 | 0.21 % | | 11 | C / C C D C C C | M/SP2QVE | 2 | 0.25 % | | 2 | 0.21 % | | 12 | C C D / C C D C C C | CT9/DL5LFA | 1 | 0.12 % | | 1 | 0.10 % | | 13 | C D D C C C | E23NEZ | 1 | 0.12 % | | 1 | 0.10 % | | 14 | C C D / C D C C C | EA7/G4BJM | 1 | 0.12 % | | 1 | 0.10 % | | 15 | C C D C C C / C C C | IK5WOB/QRP | 1 | 0.12 % | | 1 | 0.10 % | | 16 | D C D C | 9A6W | 1 | 0.12 % | | 1 | 0.10 % | | 17 | C C D C C C / D | SP7CDN/5 | 1 | 0.12 % | | 1 | 0.10 % | | 18 | C C D C C / C C | UT1FG/MM | 1 | 0.12 % | | 1 | 0.10 % | | 19 | C C D C C / C C C | YU1LM/QRP | 1 | 0.12 % | | 1 | 0.10 % | |
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