| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | E7DX | 255 | 39.84 % | | 256 | 39.69 % | | 2 | C C D C | AA1K | 145 | 22.66 % | | 148 | 22.95 % | | 3 | C D C C C | K0IDX | 99 | 15.47 % | | 100 | 15.50 % | | 4 | C C D C C | AA0FO | 92 | 14.38 % | | 92 | 14.26 % | | 5 | C C D C C C | KA1IOR | 38 | 5.94 % | | 38 | 5.89 % | | 6 | C D D C | S50C | 4 | 0.63 % | | 4 | 0.62 % | | 7 | C D D C C | P40AA | 2 | 0.31 % | | 2 | 0.31 % | | 8 | C D C | G4A | 1 | 0.16 % | | 1 | 0.16 % | | 9 | C C D C C C / D | KB1EFS/2 | 1 | 0.16 % | | 1 | 0.16 % | | 10 | D C D C | 9A5Y | 1 | 0.16 % | | 1 | 0.16 % | | 11 | C C D C / C C C | HI3T/QRP | 1 | 0.16 % | | 1 | 0.16 % | | 12 | C C D C / C D | KH7X/W7 | 1 | 0.16 % | | 1 | 0.16 % | |
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