| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AK0DX | 28 | 25.93 % | | 28 | 24.78 % | | 2 | C C D C | AC0C | 27 | 25.00 % | | 29 | 25.66 % | | 3 | C D C C | I4DZ | 16 | 14.81 % | | 16 | 14.16 % | | 4 | C C D C C C | CT2GQN | 15 | 13.89 % | | 16 | 14.16 % | | 5 | C D C C C | F4DXW | 7 | 6.48 % | | 8 | 7.08 % | | 6 | C D D C | P49X | 4 | 3.70 % | | 5 | 4.42 % | | 7 | C D C | D4C | 3 | 2.78 % | | 3 | 2.65 % | | 8 | D C D C | 4O3A | 2 | 1.85 % | | 2 | 1.77 % | | 9 | D C D C C C | 5B4AIF | 2 | 1.85 % | | 2 | 1.77 % | | 10 | C D D C C | A61ZX | 2 | 1.85 % | | 2 | 1.77 % | | 11 | C C D / C D C C | VY2/W5AJ | 1 | 0.93 % | | 1 | 0.88 % | | 12 | C C D D C C C C | YU90IARU | 1 | 0.93 % | | 1 | 0.88 % | |
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