| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0GOB | 22 | 29.33 % | | 22 | 29.33 % | | 2 | C D C C | K1LT | 18 | 24.00 % | | 18 | 24.00 % | | 3 | C C D C C C | KB1UJS | 17 | 22.67 % | | 17 | 22.67 % | | 4 | C D C | K1R | 6 | 8.00 % | | 6 | 8.00 % | | 5 | C C D C | KR6G | 6 | 8.00 % | | 6 | 8.00 % | | 6 | C C D C C | AA4NC | 3 | 4.00 % | | 3 | 4.00 % | | 7 | C C D D D C | KG400Z | 1 | 1.33 % | | 1 | 1.33 % | | 8 | C D D C C | K04OL | 1 | 1.33 % | | 1 | 1.33 % | | 9 | C C C C D | NJJC0 | 1 | 1.33 % | | 1 | 1.33 % | |
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