| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | IS0BZR | 11 | 27.50 % | | 12 | 25.53 % | | 2 | C C D C C | AA5AU | 10 | 25.00 % | | 12 | 25.53 % | | 3 | C D C C C | G8APB | 8 | 20.00 % | | 11 | 23.40 % | | 4 | C C D C | AB1J | 5 | 12.50 % | | 5 | 10.64 % | | 5 | C D C C | F5CQ | 2 | 5.00 % | | 3 | 6.38 % | | 6 | C C D C C / C | HA5KN/P | 1 | 2.50 % | | 1 | 2.13 % | | 7 | D C D C C | 4Z5CP | 1 | 2.50 % | | 1 | 2.13 % | | 8 | C D C C / D | N7US/9 | 1 | 2.50 % | | 1 | 2.13 % | | 9 | C C D C C C / D | WB2RHM/4 | 1 | 2.50 % | | 1 | 2.13 % | |
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