| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K5BRZ | 17 | 45.95 % | | 17 | 45.95 % | | 2 | C C D C C C | KB5MAR | 9 | 24.32 % | | 9 | 24.32 % | | 3 | C C D C C | KC4EL | 4 | 10.81 % | | 4 | 10.81 % | | 4 | C C D C | AF5M | 3 | 8.11 % | | 3 | 8.11 % | | 5 | C D C C | K5RN | 3 | 8.11 % | | 3 | 8.11 % | | 6 | C D C | W5Y | 1 | 2.70 % | | 1 | 2.70 % | |
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