| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | K0AD | 42 | 48.28 % | | 43 | 48.86 % | | 2 | C C D C | AA3B | 14 | 16.09 % | | 14 | 15.91 % | | 3 | C C D C C | AA4NP | 11 | 12.64 % | | 11 | 12.50 % | | 4 | C D C C C | G3XLG | 11 | 12.64 % | | 11 | 12.50 % | | 5 | C C D C C C | GD4EIP | 8 | 9.20 % | | 8 | 9.09 % | | 6 | C D C C C C | K9GDDF | 1 | 1.15 % | | 1 | 1.14 % | |
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