| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0ANT | 121 | 35.38 % | | 126 | 35.59 % | | 2 | C D C C | K0EA | 104 | 30.41 % | | 109 | 30.79 % | | 3 | C C D C C C | CJ3ABN | 42 | 12.28 % | | 42 | 11.86 % | | 4 | C C D C C | AA4MB | 36 | 10.53 % | | 36 | 10.17 % | | 5 | C C D C | AE0C | 29 | 8.48 % | | 29 | 8.19 % | | 6 | C D C | K1R | 10 | 2.92 % | | 12 | 3.39 % | |
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