| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K2DRH | 9 | 37.50 % | | 11 | 40.74 % | | 2 | C D C C | K9WM | 9 | 37.50 % | | 10 | 37.04 % | | 3 | C D C | N6N | 2 | 8.33 % | | 2 | 7.41 % | | 4 | C C D C C | AD4KE | 1 | 4.17 % | | 1 | 3.70 % | | 5 | C C D C | KT9Y | 1 | 4.17 % | | 1 | 3.70 % | | 6 | C D C C C C | W4JJNB | 1 | 4.17 % | | 1 | 3.70 % | | 7 | C C D C C C | WX4BCA | 1 | 4.17 % | | 1 | 3.70 % | |
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