| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | K1LT | 28 | 51.85 % | | 28 | 51.85 % | | 2 | C D C C C | K6LRN | 12 | 22.22 % | | 12 | 22.22 % | | 3 | C C D C | KD7H | 7 | 12.96 % | | 7 | 12.96 % | | 4 | C C D C C | KE3VV | 4 | 7.41 % | | 4 | 7.41 % | | 5 | C C D C C C | KB7KYK | 3 | 5.56 % | | 3 | 5.56 % | |
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