| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | W0MA | 3 | 42.86 % | | 3 | 42.86 % | | 2 | C D C | N6C | 1 | 14.29 % | | 1 | 14.29 % | | 3 | C C D C | KF3M | 1 | 14.29 % | | 1 | 14.29 % | | 4 | C D C C C | W4BLA | 1 | 14.29 % | | 1 | 14.29 % | | 5 | C C D C C C | WB2ELW | 1 | 14.29 % | | 1 | 14.29 % | |
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