| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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| 1 | C C D C C C | BG0ATE | 352 | 31.37 % | | 380 | 30.40 % | | | 2 | C C D C C | AA6AA | 301 | 26.83 % | | 336 | 26.88 % | | | 3 | C C D C | AA7A | 249 | 22.19 % | | 301 | 24.08 % | | | 4 | C D C C | D1DX | 102 | 9.09 % | | 105 | 8.40 % | | | 5 | C D C C C | F4EFI | 42 | 3.74 % | | 43 | 3.44 % | | | 6 | C D D C | A42K | 17 | 1.52 % | | 18 | 1.44 % | | | 7 | D C D C C | 4F3BZ | 16 | 1.43 % | | 20 | 1.60 % | | | 8 | D C D C | 4D3X | 13 | 1.16 % | | 14 | 1.12 % | | | 9 | C D D C C | E27EK | 13 | 1.16 % | | 14 | 1.12 % | | | 10 | D C D C C C | 4F2KWT | 9 | 0.80 % | | 9 | 0.72 % | | | 11 | C D C | E2A | 4 | 0.36 % | | 5 | 0.40 % | | | 12 | D C D D C C C / D | 8J17CAL/1 | 1 | 0.09 % | | 1 | 0.08 % | | | 13 | C D C C C C | E2ICOM | 1 | 0.09 % | | 2 | 0.16 % | | | 14 | C D C C C / C | F6CZV/P | 1 | 0.09 % | | 1 | 0.08 % | | | 15 | C C D D C C C | PA75PKZ | 1 | 0.09 % | | 1 | 0.08 % | |
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