| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | K2EC | 23 | 42.59 % | | 24 | 43.64 % | | 2 | C D C C C | K4NAB | 21 | 38.89 % | | 21 | 38.18 % | | 3 | C C D C C | AC4YD | 6 | 11.11 % | | 6 | 10.91 % | | 4 | C C D C C C | KA4NXP | 3 | 5.56 % | | 3 | 5.45 % | | 5 | C D C | K4V | 1 | 1.85 % | | 1 | 1.82 % | |
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