| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BH7PFH | 251 | 41.35 % | | 338 | 39.21 % | | 2 | C C D C C | AA4DD | 194 | 31.96 % | | 292 | 33.87 % | | 3 | C C D C | AB1J | 63 | 10.38 % | | 96 | 11.14 % | | 4 | C D C C C | D2QMN | 40 | 6.59 % | | 53 | 6.15 % | | 5 | C D C C | F5CQ | 34 | 5.60 % | | 51 | 5.92 % | | 6 | C D D C C | E73KM | 7 | 1.15 % | | 9 | 1.04 % | | 7 | C D D C | S53M | 4 | 0.66 % | | 5 | 0.58 % | | 8 | D C D C C C | 7J1AAX | 2 | 0.33 % | | 2 | 0.23 % | | 9 | D C D C | 3G3P | 2 | 0.33 % | | 4 | 0.46 % | | 10 | C C D C C C / D | EA7DUT/6 | 2 | 0.33 % | | 3 | 0.35 % | | 11 | C D D C C C | E21YDP | 2 | 0.33 % | | 2 | 0.23 % | | 12 | C C D / C C D C C C | DV1/JO7KMB | 1 | 0.16 % | | 1 | 0.12 % | | 13 | C C D / C C D C C | EA6/DL5QS | 1 | 0.16 % | | 1 | 0.12 % | | 14 | D C D C C | 4L1BR | 1 | 0.16 % | | 2 | 0.23 % | | 15 | C C D C C / C C C | EA1GT/QRP | 1 | 0.16 % | | 1 | 0.12 % | | 16 | C C D C / C C C | PC4C/QRP | 1 | 0.16 % | | 1 | 0.12 % | | 17 | C D C C / D | K1GU/4 | 1 | 0.16 % | | 1 | 0.12 % | |
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