| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BH4IGO | 545 | 39.27 % | | 679 | 39.32 % | | 2 | C C D C C | AA2YV | 409 | 29.47 % | | 527 | 30.52 % | | 3 | C D C C C | F1MWV | 206 | 14.84 % | | 241 | 13.95 % | | 4 | C D C C | K0TF | 90 | 6.48 % | | 122 | 7.06 % | | 5 | C C D C | AB4V | 64 | 4.61 % | | 75 | 4.34 % | | 6 | D C D C C C | 2E0DVS | 21 | 1.51 % | | 23 | 1.33 % | | 7 | D C D C C | 3Z9AM | 8 | 0.58 % | | 10 | 0.58 % | | 8 | C D D C C | A41ZZ | 8 | 0.58 % | | 9 | 0.52 % | | 9 | C D D C | E77Y | 6 | 0.43 % | | 7 | 0.41 % | | 10 | C D C C C / C C C | F5NZY/QRP | 4 | 0.29 % | | 4 | 0.23 % | | 11 | C C D / C D C C C | CT7/F6HBR | 3 | 0.22 % | | 5 | 0.29 % | | 12 | C C D C C C / C C C | EA1FGN/QRP | 3 | 0.22 % | | 3 | 0.17 % | | 13 | D C D C | 5Q2J | 2 | 0.14 % | | 2 | 0.12 % | | 14 | C C D D D C C | HG315VA | 2 | 0.14 % | | 3 | 0.17 % | | 15 | C D C C / C C C | W8BG/QRP | 2 | 0.14 % | | 2 | 0.12 % | | 16 | C C D C C / C C C | LZ3KB/QRP | 2 | 0.14 % | | 2 | 0.12 % | | 17 | C / C C D C C C | M/SP2QVE | 2 | 0.14 % | | 2 | 0.12 % | | 18 | C C D C C C / D | SP7CDN/5 | 2 | 0.14 % | | 2 | 0.12 % | | 19 | C C D D C C C | DL20IKT | 1 | 0.07 % | | 1 | 0.06 % | | 20 | C D D C C C | G20EFZ | 1 | 0.07 % | | 1 | 0.06 % | | 21 | C C D D C C | LZ30OJ | 1 | 0.07 % | | 1 | 0.06 % | | 22 | C D C C C / C C | N3MLB/AE | 1 | 0.07 % | | 1 | 0.06 % | | 23 | C C D C C C / C | OE3WYC/P | 1 | 0.07 % | | 1 | 0.06 % | | 24 | C D D D C C | R160NN | 1 | 0.07 % | | 1 | 0.06 % | | 25 | C C D C C / C | RA3AL/M | 1 | 0.07 % | | 1 | 0.06 % | | 26 | C C D C C C C C | OZ1ONOFF | 1 | 0.07 % | | 1 | 0.06 % | | 27 | C D C C C / C | F8BJK/P | 1 | 0.07 % | | 1 | 0.06 % | |
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