| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AA3B | 35 | 32.41 % | | 35 | 32.41 % | | 2 | C C D C C C | BI8NZM | 17 | 15.74 % | | 17 | 15.74 % | | 3 | C D C C C | F4FFZ | 15 | 13.89 % | | 15 | 13.89 % | | 4 | C D C C | K0HB | 15 | 13.89 % | | 15 | 13.89 % | | 5 | C C D C C | AD4ES | 14 | 12.96 % | | 14 | 12.96 % | | 6 | C D C | G8X | 3 | 2.78 % | | 3 | 2.78 % | | 7 | D C D C | 9A1A | 2 | 1.85 % | | 2 | 1.85 % | | 8 | C D D C C | A61QQ | 2 | 1.85 % | | 2 | 1.85 % | | 9 | C D D C | C37N | 2 | 1.85 % | | 2 | 1.85 % | | 10 | D C D C C C | 2E0CVN | 1 | 0.93 % | | 1 | 0.93 % | | 11 | C C D D C | OG66X | 1 | 0.93 % | | 1 | 0.93 % | | 12 | C C D / C C D C C | VY2/WE5DX | 1 | 0.93 % | | 1 | 0.93 % | |
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