| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | F1BIJ | 249 | 29.29 % | | 408 | 29.21 % | | 2 | C C D C C | AF5VV | 242 | 28.47 % | | 404 | 28.92 % | | 3 | C C D C C C | CT1DRB | 181 | 21.29 % | | 273 | 19.54 % | | 4 | C C D C | AE1N | 84 | 9.88 % | | 169 | 12.10 % | | 5 | C D C C | F2AI | 52 | 6.12 % | | 80 | 5.73 % | | 6 | D C D C C | 4Z4DX | 9 | 1.06 % | | 16 | 1.15 % | | 7 | C D D C C | A61EK | 7 | 0.82 % | | 10 | 0.72 % | | 8 | C D C C C / C | F5JGY/P | 7 | 0.82 % | | 14 | 1.00 % | | 9 | C D D C | E72U | 4 | 0.47 % | | 5 | 0.36 % | | 10 | D C D C | 3Z1K | 2 | 0.24 % | | 2 | 0.14 % | | 11 | C C D C C C / C C C |
EA7AAW/QRP | 2 | 0.24 % | | 2 | 0.14 % | | 12 | D C D C C C | 9A2FCC | 2 | 0.24 % | | 2 | 0.14 % | | 13 | C / C C D C C | F/OM2ZA | 1 | 0.12 % | | 2 | 0.14 % | | 14 | D C / C D C C C | 6W/F5NHJ | 1 | 0.12 % | | 1 | 0.07 % | | 15 | C C D C C / C C C | EA1GT/QRP | 1 | 0.12 % | | 2 | 0.14 % | | 16 | C D C C C / D | F5APZ/1 | 1 | 0.12 % | | 1 | 0.07 % | | 17 | C C D / C C D C C C |
EA8/HB9FIH | 1 | 0.12 % | | 1 | 0.07 % | | 18 | C D C C / C | F8KI/P | 1 | 0.12 % | | 1 | 0.07 % | | 19 | C D C C / D | R7RF/6 | 1 | 0.12 % | | 2 | 0.14 % | | 20 | C C D / C C D C C | SV2/RW3AL | 1 | 0.12 % | | 1 | 0.07 % | | 21 | C C D C C C / C | UA1CEG/P | 1 | 0.12 % | | 1 | 0.07 % | |
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