| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | E7DX | 218 | 40.90 % | | 218 | 40.52 % | | 2 | C C D C | AA1K | 127 | 23.83 % | | 127 | 23.61 % | | 3 | C D C C C | F6FYA | 71 | 13.32 % | | 71 | 13.20 % | | 4 | C C D C C | AA0FO | 60 | 11.26 % | | 60 | 11.15 % | | 5 | C C D C C C | CT9ABO | 44 | 8.26 % | | 44 | 8.18 % | | 6 | D C D C | 9A4M | 5 | 0.94 % | | 5 | 0.93 % | | 7 | C D D C C | P40AA | 2 | 0.38 % | | 2 | 0.37 % | | 8 | C D D C | S50C | 2 | 0.38 % | | 2 | 0.37 % | | 9 | C D C | D4Z | 1 | 0.19 % | | 1 | 0.19 % | | 10 | C C D / C D D C C | IG9/S57DX | 1 | 0.19 % | | 1 | 0.19 % | | 11 | C C D C C C / C D | JL1RYH/W2 | 1 | 0.19 % | | 1 | 0.19 % | | 12 | C C D C C C / D | KB1EFS/2 | 1 | 0.19 % | | 1 | 0.19 % | |
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