| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | K3PH | 11 | 39.29 % | | 12 | 41.38 % | | 2 | C D C C C | K4BFT | 11 | 39.29 % | | 11 | 37.93 % | | 3 | C C D C | KD5C | 4 | 14.29 % | | 4 | 13.79 % | | 4 | C C D C C | KB5TX | 1 | 3.57 % | | 1 | 3.45 % | | 5 | C D C | N7N | 1 | 3.57 % | | 1 | 3.45 % | |
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