| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CE6SAX | 1326 | 48.93 % | | 1848 | 49.73 % | | 2 | C C D C C | AA1VX | 825 | 30.44 % | | 1144 | 30.79 % | | 3 | C D C C C | F1PYN | 214 | 7.90 % | | 270 | 7.27 % | | 4 | C D C C | F2FG | 86 | 3.17 % | | 115 | 3.09 % | | 5 | C C D C | AK1N | 81 | 2.99 % | | 108 | 2.91 % | | 6 | C D D C C | A41NN | 51 | 1.88 % | | 71 | 1.91 % | | 7 | D C D C C | 3A2MD | 46 | 1.70 % | | 63 | 1.70 % | | 8 | C D D C | A61K | 18 | 0.66 % | | 24 | 0.65 % | | 9 | D C D C C C | 2E0HAG | 16 | 0.59 % | | 19 | 0.51 % | | 10 | C C D C C C / C | CS7AFP/M | 9 | 0.33 % | | 11 | 0.30 % | | 11 | D C D C | 3Z0R | 8 | 0.30 % | | 10 | 0.27 % | | 12 | C D D C C C | E73JHI | 6 | 0.22 % | | 7 | 0.19 % | | 13 | C C D C C / C | AB5BX/M | 4 | 0.15 % | | 5 | 0.13 % | | 14 | D C D C C / C | 7Z1TT/M | 2 | 0.07 % | | 2 | 0.05 % | | 15 | C C D D D D C C C | MA3031SWL | 2 | 0.07 % | | 2 | 0.05 % | | 16 | C C D D C C C | OZ75AAL | 2 | 0.07 % | | 2 | 0.05 % | | 17 | C C D C C C / D | SP5CUK/7 | 2 | 0.07 % | | 2 | 0.05 % | | 18 | C C D C C / D | RU3EQ/3 | 2 | 0.07 % | | 2 | 0.05 % | | 19 | C D C C C / D | K7MOA/4 | 1 | 0.04 % | | 1 | 0.03 % | | 20 | D C D C C C / C | 4O7JAZ/P | 1 | 0.04 % | | 1 | 0.03 % | | 21 | C C D D D D | NL8992 | 1 | 0.04 % | | 1 | 0.03 % | | 22 | C D D C C / C | A71OK/M | 1 | 0.04 % | | 1 | 0.03 % | | 23 | D C D C C C C | 3Z0WOSP | 1 | 0.04 % | | 1 | 0.03 % | | 24 | C D / C D D C | I0/S53R | 1 | 0.04 % | | 1 | 0.03 % | | 25 | C C D D C C C C | SN90IARU | 1 | 0.04 % | | 2 | 0.05 % | | 26 | C C D C C C / C C C | PE1RCO/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 27 | C C D / C C D C C C | SV1/IK1MYT | 1 | 0.04 % | | 1 | 0.03 % | | 28 | C D C | T6T | 1 | 0.04 % | | 1 | 0.03 % | |
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