| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CM8NMN | 1829 | 26.10 % | | 2718 | 20.25 % | | 2 | C C D C C | AA0AI | 1584 | 22.61 % | | 2711 | 20.20 % | | 3 | C C D C | AA0O | 1189 | 16.97 % | | 2687 | 20.02 % | | 4 | C D C C | D1DX | 1136 | 16.21 % | | 2943 | 21.93 % | | 5 | C D C C C | C6AGU | 930 | 13.27 % | | 1750 | 13.04 % | | 6 | C D D C C | A61BK | 71 | 1.01 % | | 105 | 0.78 % | | 7 | C D D C | A44A | 61 | 0.87 % | | 126 | 0.94 % | | 8 | D C D C C | 3D2AG | 53 | 0.76 % | | 99 | 0.74 % | | 9 | C D C | C4W | 39 | 0.56 % | | 74 | 0.55 % | | 10 | D C D C | 3B8M | 36 | 0.51 % | | 89 | 0.66 % | | 11 | D C D C C C | 2E0CVN | 17 | 0.24 % | | 24 | 0.18 % | | 12 | C C D C C C / D | IK1ZOF/3 | 5 | 0.07 % | | 7 | 0.05 % | | 13 | C C D / C C D C | EA8/OK5D | 5 | 0.07 % | | 8 | 0.06 % | | 14 | C C D D C C | LZ30OJ | 4 | 0.06 % | | 6 | 0.04 % | | 15 | C C D / C C D C C | DV8/KH7EA | 4 | 0.06 % | | 4 | 0.03 % | | 16 | C C D C C / D | AB5ZA/7 | 3 | 0.04 % | | 3 | 0.02 % | | 17 | C C D D C C C | HB90AWS | 3 | 0.04 % | | 6 | 0.04 % | | 18 | C C D / C C D C C C | EA8/DL2DXA | 3 | 0.04 % | | 6 | 0.04 % | | 19 | C C D C / D | AI0Y/9 | 3 | 0.04 % | | 6 | 0.04 % | | 20 | C C / C D C C C | FO/F6BCW | 2 | 0.03 % | | 5 | 0.04 % | | 21 | C C / C D C C | FO/K5PI | 2 | 0.03 % | | 3 | 0.02 % | | 22 | C D D C C C | E73FDE | 2 | 0.03 % | | 3 | 0.02 % | | 23 | C D C C C / C | G4NXG/M | 2 | 0.03 % | | 3 | 0.02 % | | 24 | C D C C / D | K0XB/6 | 2 | 0.03 % | | 2 | 0.01 % | | 25 | C C D C C / C D | KH6KG/W5 | 2 | 0.03 % | | 5 | 0.04 % | | 26 | C C D D C | LX75V | 2 | 0.03 % | | 2 | 0.01 % | | 27 | D C D / C C D C C | 8R1/AG6UT | 1 | 0.01 % | | 4 | 0.03 % | | 28 | C C D / C D C C C | CT7/G4BJM | 1 | 0.01 % | | 2 | 0.01 % | | 29 | D C / C C D C | 9A/AI6V | 1 | 0.01 % | | 3 | 0.02 % | | 30 | C C D D D D C C C | DQ1200ASP | 1 | 0.01 % | | 1 | 0.01 % | | 31 | C C D D D C C C | HF100PIP | 1 | 0.01 % | | 1 | 0.01 % | | 32 | C C D C C / C C C | HZ1TT/QRP | 1 | 0.01 % | | 2 | 0.01 % | | 33 | C C / C C D C C | FS/VA3DF | 1 | 0.01 % | | 1 | 0.01 % | | 34 | D C D D D C C C | 3Z100PIP | 1 | 0.01 % | | 1 | 0.01 % | | 35 | C / C C D C | F/IR7A | 1 | 0.01 % | | 1 | 0.01 % | | 36 | D C D D C | 4U25B | 1 | 0.01 % | | 1 | 0.01 % | | 37 | D C / C C D C C | 5B/RN3QO | 1 | 0.01 % | | 2 | 0.01 % | | 38 | C C D C / C D | NH6T/W4 | 1 | 0.01 % | | 1 | 0.01 % | | 39 | C C D C C C / C | US7IGN/P | 1 | 0.01 % | | 1 | 0.01 % | | 40 | C C D C C / C | UX1HW/M | 1 | 0.01 % | | 1 | 0.01 % | | 41 | C D / C C D C | V4/WX4G | 1 | 0.01 % | | 1 | 0.01 % | | 42 | C D / C D D C C | W2/E78WW | 1 | 0.01 % | | 1 | 0.01 % | | 43 | C C D | WN7 | 1 | 0.01 % | | 1 | 0.01 % | | 44 | C C D C C / C C | YL3IZ/MM | 1 | 0.01 % | | 2 | 0.01 % | |
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