| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT2JAZ | 205 | 57.10 % | | 216 | 57.29 % | | 2 | C C D C C | DC1YL | 56 | 15.60 % | | 59 | 15.65 % | | 3 | C D C C C | D8OFO | 53 | 14.76 % | | 56 | 14.85 % | | 4 | D C D C C C | 2E0AMO | 8 | 2.23 % | | 8 | 2.12 % | | 5 | C D C C | F2VX | 7 | 1.95 % | | 7 | 1.86 % | | 6 | C C D C C C / C C C | DL1AAH/QRP | 7 | 1.95 % | | 7 | 1.86 % | | 7 | D C D C C | 4X6FB | 4 | 1.11 % | | 5 | 1.33 % | | 8 | C C D C | EA5W | 4 | 1.11 % | | 4 | 1.06 % | | 9 | C C D C C C / C | DG1AAE/M | 3 | 0.84 % | | 3 | 0.80 % | | 10 | C D C C C / C | M0ANO/P | 3 | 0.84 % | | 3 | 0.80 % | | 11 | C C / C C D C C C | PD/DO2REK | 2 | 0.56 % | | 2 | 0.53 % | | 12 | C D D C | E77O | 1 | 0.28 % | | 1 | 0.27 % | | 13 | D C D C C C / C C C | 5P1NSA/QRP | 1 | 0.28 % | | 1 | 0.27 % | | 14 | C D C C C / C C C | M7MAE/QRP | 1 | 0.28 % | | 1 | 0.27 % | | 15 | C C D C / C C C | PE4T/QRP | 1 | 0.28 % | | 1 | 0.27 % | | 16 | C C D / C C D C C | RA3/UN7ZR | 1 | 0.28 % | | 1 | 0.27 % | | 17 | C D D C C | S52ON | 1 | 0.28 % | | 1 | 0.27 % | | 18 | C C D C C C C | SP1LEON | 1 | 0.28 % | | 1 | 0.27 % | |
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