| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BG0CAB | 713 | 49.69 % | | 968 | 49.14 % | | 2 | C C D C C | BD4UN | 395 | 27.53 % | | 537 | 27.26 % | | 3 | C D C C C | F1BAY | 191 | 13.31 % | | 268 | 13.60 % | | 4 | C C D C | DA3W | 39 | 2.72 % | | 64 | 3.25 % | | 5 | C D C C | D1DX | 31 | 2.16 % | | 43 | 2.18 % | | 6 | D C D C C | 4O4DB | 16 | 1.11 % | | 31 | 1.57 % | | 7 | D C D C C C | 1K0MIB | 11 | 0.77 % | | 16 | 0.81 % | | 8 | C D D C C | E75IO | 6 | 0.42 % | | 7 | 0.36 % | | 9 | C D D C | E75W | 5 | 0.35 % | | 6 | 0.30 % | | 10 | C C D C C C / D | IK2OFO/1 | 5 | 0.35 % | | 5 | 0.25 % | | 11 | C D D C C C | D07JVK | 4 | 0.28 % | | 4 | 0.20 % | | 12 | D C D C | 3Z6O | 4 | 0.28 % | | 5 | 0.25 % | | 13 | C C D C C C / C C C | IK2MMM/QRP | 4 | 0.28 % | | 4 | 0.20 % | | 14 | C C / C D C C C | DL/F4EPU | 1 | 0.07 % | | 1 | 0.05 % | | 15 | C D C C C / C | F4JAK/M | 1 | 0.07 % | | 1 | 0.05 % | | 16 | C C D C C C C | II3TNXC | 1 | 0.07 % | | 2 | 0.10 % | | 17 | C C D C C C / C D | IK1MHJ/X1 | 1 | 0.07 % | | 1 | 0.05 % | | 18 | C C D C C C / C C | IU1MQH/EA | 1 | 0.07 % | | 1 | 0.05 % | | 19 | C C D C C D | IZ4JM4 | 1 | 0.07 % | | 1 | 0.05 % | | 20 | C C / C C D C C C | MW/PA3FFX | 1 | 0.07 % | | 1 | 0.05 % | | 21 | C C D | OH4 | 1 | 0.07 % | | 1 | 0.05 % | | 22 | C C D C C C C D D | SP6JIU-11 | 1 | 0.07 % | | 1 | 0.05 % | | 23 | C C D D C C | TM80LY | 1 | 0.07 % | | 1 | 0.05 % | | 24 | C C D C C C / C | YB1RET/P | 1 | 0.07 % | | 1 | 0.05 % | |
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