| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CS7AOL | 861 | 40.12 % | | 1038 | 37.84 % | | 2 | C C D C C | AA0AI | 629 | 29.31 % | | 861 | 31.39 % | | 3 | C D C C C | F1FJT | 267 | 12.44 % | | 317 | 11.56 % | | 4 | C C D C | AA1K | 136 | 6.34 % | | 210 | 7.66 % | | 5 | C D C C | F5JU | 110 | 5.13 % | | 143 | 5.21 % | | 6 | C D D C C | A41CK | 26 | 1.21 % | | 32 | 1.17 % | | 7 | D C D C C C | 2E0EGS | 24 | 1.12 % | | 27 | 0.98 % | | 8 | D C D C C | 3V8SF | 19 | 0.89 % | | 25 | 0.91 % | | 9 | C D D C | E71A | 16 | 0.75 % | | 20 | 0.73 % | | 10 | C D C C C / C C C | F5NZY/QRP | 5 | 0.23 % | | 5 | 0.18 % | | 11 | C C D D D C | HF100N | 5 | 0.23 % | | 6 | 0.22 % | | 12 | D C D C | 4K9W | 4 | 0.19 % | | 8 | 0.29 % | | 13 | C C D C C / C C C | EA1KC/QRP | 4 | 0.19 % | | 5 | 0.18 % | | 14 | C C D C C C / C C C | GW0VSW/QRP | 4 | 0.19 % | | 5 | 0.18 % | | 15 | C D C | G0C | 4 | 0.19 % | | 4 | 0.15 % | | 16 | C C D D D C C C | OL100BOB | 3 | 0.14 % | | 5 | 0.18 % | | 17 | C C D / C C D C C C | CT9/DL5AXX | 3 | 0.14 % | | 3 | 0.11 % | | 18 | C D C C C / C | F6EAO/P | 2 | 0.09 % | | 3 | 0.11 % | | 19 | C D C C C D D | G4POF59 | 2 | 0.09 % | | 2 | 0.07 % | | 20 | C C D D C C | HF60NH | 2 | 0.09 % | | 2 | 0.07 % | | 21 | C C D D D C C | HG170VA | 2 | 0.09 % | | 2 | 0.07 % | | 22 | C C D C C C C | SP8BBDF | 2 | 0.09 % | | 2 | 0.07 % | | 23 | C C D / C C D C C | EA8/DL6RO | 2 | 0.09 % | | 3 | 0.11 % | | 24 | C C D D C C C | TM18EHF | 2 | 0.09 % | | 2 | 0.07 % | | 25 | C C D C C D | EA5DN0 | 1 | 0.05 % | | 1 | 0.04 % | | 26 | C D C C D C C C | F7EA1IXQ | 1 | 0.05 % | | 1 | 0.04 % | | 27 | D C D / C C D C C C | 4X4/VE4DXR | 1 | 0.05 % | | 1 | 0.04 % | | 28 | C C / C C D C | DL/WR3Y | 1 | 0.05 % | | 1 | 0.04 % | | 29 | C C D C C / D | LZ1HW/2 | 1 | 0.05 % | | 1 | 0.04 % | | 30 | C C / C D C C | OH/R3CW | 1 | 0.05 % | | 1 | 0.04 % | | 31 | C D D C / C C C | E77Y/QRP | 1 | 0.05 % | | 1 | 0.04 % | | 32 | C D C C / D | R8MB/1 | 1 | 0.05 % | | 1 | 0.04 % | | 33 | C C D D D D C C C | SN1918WAR | 1 | 0.05 % | | 2 | 0.07 % | | 34 | C C / C C D C C | CT/EI9JF | 1 | 0.05 % | | 1 | 0.04 % | | 35 | C C D / C D C C C | CT7/F6HBR | 1 | 0.05 % | | 1 | 0.04 % | | 36 | C C D C C C / C | US9IIJ/A | 1 | 0.05 % | | 1 | 0.04 % | |
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