| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0FEZ | 142 | 33.10 % | | 159 | 32.45 % | | 2 | C D C C | K0AE | 94 | 21.91 % | | 118 | 24.08 % | | 3 | C C D C C C | CG7NOR | 86 | 20.05 % | | 93 | 18.98 % | | 4 | C C D C C | AA1FD | 49 | 11.42 % | | 56 | 11.43 % | | 5 | C C D C | AB6D | 35 | 8.16 % | | 38 | 7.76 % | | 6 | C D C | K7A | 18 | 4.20 % | | 21 | 4.29 % | | 7 | C D D C C | K60RI | 1 | 0.23 % | | 1 | 0.20 % | | 8 | C C D | KU6 | 1 | 0.23 % | | 1 | 0.20 % | | 9 | C C D C C / C D | VA6SS/W7 | 1 | 0.23 % | | 1 | 0.20 % | | 10 | C D C C C / D | W5KUA/5 | 1 | 0.23 % | | 1 | 0.20 % | | 11 | C C C C | WWOR | 1 | 0.23 % | | 1 | 0.20 % | |
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