| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT2GEI | 62 | 61.39 % | | 64 | 61.54 % | | 2 | C C D C C | EA1AA | 22 | 21.78 % | | 22 | 21.15 % | | 3 | C D C C C | F1PNJ | 8 | 7.92 % | | 8 | 7.69 % | | 4 | D C D C C | 9A2TX | 2 | 1.98 % | | 2 | 1.92 % | | 5 | C D D C C | A61FK | 2 | 1.98 % | | 3 | 2.88 % | | 6 | C C D C C / C | EA3TO/P | 1 | 0.99 % | | 1 | 0.96 % | | 7 | D C D C C C | 2E0RDX | 1 | 0.99 % | | 1 | 0.96 % | | 8 | C C / C C D C C C | OM/SP5UUD | 1 | 0.99 % | | 1 | 0.96 % | | 9 | C D D C | S58G | 1 | 0.99 % | | 1 | 0.96 % | | 10 | C C D C | SQ3F | 1 | 0.99 % | | 1 | 0.96 % | |
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