| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | AU2UCB | 254 | 30.57 % | | 260 | 30.16 % | | 2 | C C D C C | BG5OP | 245 | 29.48 % | | 258 | 29.93 % | | 3 | C C D C | AA2A | 119 | 14.32 % | | 125 | 14.50 % | | 4 | C D C C C | F1BJD | 114 | 13.72 % | | 117 | 13.57 % | | 5 | C D C C | F2LZ | 55 | 6.62 % | | 57 | 6.61 % | | 6 | D C D C C | 4X4DZ | 7 | 0.84 % | | 7 | 0.81 % | | 7 | D C D C C C | 2E0BPU | 6 | 0.72 % | | 6 | 0.70 % | | 8 | C D D C | E73M | 5 | 0.60 % | | 5 | 0.58 % | | 9 | D C D C | 4J5A | 5 | 0.60 % | | 6 | 0.70 % | | 10 | C C D C C C / D | JA6ECF/1 | 4 | 0.48 % | | 4 | 0.46 % | | 11 | C D D C C | S57UN | 3 | 0.36 % | | 3 | 0.35 % | | 12 | C D C | B7P | 3 | 0.36 % | | 3 | 0.35 % | | 13 | C D / C C D C C | V5/DF9WB | 2 | 0.24 % | | 2 | 0.23 % | | 14 | C D C C C / C | G4NXG/M | 2 | 0.24 % | | 2 | 0.23 % | | 15 | C C D / C C D C C | CE2/VE7SV | 1 | 0.12 % | | 1 | 0.12 % | | 16 | D C D / C C D C C C | 9M2/JE1SCZ | 1 | 0.12 % | | 1 | 0.12 % | | 17 | C / C D C C C | F/M0ONZ | 1 | 0.12 % | | 1 | 0.12 % | | 18 | C C D D C C | OL60DG | 1 | 0.12 % | | 1 | 0.12 % | | 19 | C C D C C / C C C | EA1GT/QRP | 1 | 0.12 % | | 1 | 0.12 % | | 20 | C D D C C C | E21EIC | 1 | 0.12 % | | 1 | 0.12 % | | 21 | C C D C C C / C | PI4ETL/P | 1 | 0.12 % | | 1 | 0.12 % | |
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