| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT1AGF | 178 | 38.36 % | | 218 | 36.03 % | | 2 | C C D C C | AA1SU | 124 | 26.72 % | | 158 | 26.12 % | | 3 | C C D C | AA8R | 53 | 11.42 % | | 85 | 14.05 % | | 4 | C D C C C | F1IWH | 45 | 9.70 % | | 55 | 9.09 % | | 5 | C D C C | F5RD | 30 | 6.47 % | | 49 | 8.10 % | | 6 | C D D C C | A61DD | 8 | 1.72 % | | 9 | 1.49 % | | 7 | D C D C C C | 7K4GUR | 6 | 1.29 % | | 6 | 0.99 % | | 8 | C D D C | S53F | 4 | 0.86 % | | 7 | 1.16 % | | 9 | D C D C C | 4K6FO | 4 | 0.86 % | | 5 | 0.83 % | | 10 | C C D C C C / D | JA2DGQ/3 | 2 | 0.43 % | | 3 | 0.50 % | | 11 | C C D D C C | AM03KU | 2 | 0.43 % | | 2 | 0.33 % | | 12 | D C D C / C | 5Q1A/P | 1 | 0.22 % | | 1 | 0.17 % | | 13 | D C / C C D C C C / C | 9A/OE6MDF/P | 1 | 0.22 % | | 1 | 0.17 % | | 14 | C C D C C / C C C | EA1GT/QRP | 1 | 0.22 % | | 1 | 0.17 % | | 15 | C C D C C C / C | OZ7MOR/P | 1 | 0.22 % | | 1 | 0.17 % | | 16 | C C D D D C C C | PA950SLD | 1 | 0.22 % | | 1 | 0.17 % | | 17 | C C D C C / D | RK4PA/9 | 1 | 0.22 % | | 1 | 0.17 % | | 18 | C C D C C C C | LX8RTTY | 1 | 0.22 % | | 1 | 0.17 % | | 19 | C C D / C C D C C | VE1/DF2UA | 1 | 0.22 % | | 1 | 0.17 % | |
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