| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT1BXT | 241 | 34.04 % | | 330 | 32.23 % | | 2 | C C D C C | AB4GG | 224 | 31.64 % | | 335 | 32.71 % | | 3 | C C D C | AA4V | 86 | 12.15 % | | 137 | 13.38 % | | 4 | C D C C C | F1HMR | 77 | 10.88 % | | 105 | 10.25 % | | 5 | C D C C | F5RD | 34 | 4.80 % | | 44 | 4.30 % | | 6 | C D D C | E72U | 9 | 1.27 % | | 13 | 1.27 % | | 7 | C D D C C | A61EK | 8 | 1.13 % | | 13 | 1.27 % | | 8 | D C D C C | 4K6FO | 6 | 0.85 % | | 12 | 1.17 % | | 9 | D C D C | 3Z9K | 4 | 0.56 % | | 5 | 0.49 % | | 10 | C C D D C C C C | DJ90IARU | 3 | 0.42 % | | 7 | 0.68 % | | 11 | C C / C C D C C C | FM/DL7VOG | 2 | 0.28 % | | 4 | 0.39 % | | 12 | D C D C C C | 2M0BHR | 2 | 0.28 % | | 3 | 0.29 % | | 13 | C D C C / D | R0CM/4 | 2 | 0.28 % | | 2 | 0.20 % | | 14 | C D C | E2A | 1 | 0.14 % | | 1 | 0.10 % | | 15 | C C D C C C C | LX8RTTY | 1 | 0.14 % | | 1 | 0.10 % | | 16 | C D / C D D C | I0/S53R | 1 | 0.14 % | | 2 | 0.20 % | | 17 | C C D D D D C C C C C C
OM2015TITANIC | 1 | 0.14 % | | 1 | 0.10 % | | | 18 | C C D D C | OZ11A | 1 | 0.14 % | | 2 | 0.20 % | | 19 | C C D C C C / C C C |
PD0MNF/QRP | 1 | 0.14 % | | 1 | 0.10 % | | 20 | C C D / C C D C C | PJ4/OH1MA | 1 | 0.14 % | | 2 | 0.20 % | | 21 | C C D C / D | NE8O/4 | 1 | 0.14 % | | 1 | 0.10 % | | 22 | C D D C C C | S57SWR | 1 | 0.14 % | | 2 | 0.20 % | | 23 | C D C C C / D | W6IHG/4 | 1 | 0.14 % | | 1 | 0.10 % | |
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