| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0DJO | 57 | 37.25 % | | 58 | 36.94 % | | 2 | C C D C C C | IW0CUK | 34 | 22.22 % | | 34 | 21.66 % | | 3 | C D C C | K3ZO | 26 | 16.99 % | | 27 | 17.20 % | | 4 | C C D C | AB4B | 14 | 9.15 % | | 15 | 9.55 % | | 5 | C C D C C | AA9UF | 13 | 8.50 % | | 14 | 8.92 % | | 6 | C D C | K0N | 9 | 5.88 % | | 9 | 5.73 % | |
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