| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K4YHB | 27 | 31.40 % | | 27 | 31.40 % | | 2 | C D C C | K0RV | 19 | 22.09 % | | 19 | 22.09 % | | 3 | C C D C C | AC7FF | 15 | 17.44 % | | 15 | 17.44 % | | 4 | C C D C C C | KA5IQX | 13 | 15.12 % | | 13 | 15.12 % | | 5 | C C D C | AB3C | 7 | 8.14 % | | 7 | 8.14 % | | 6 | C D C | K4A | 5 | 5.81 % | | 5 | 5.81 % | |
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