| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | KB7RUQ | 8 | 27.59 % | | 9 | 26.47 % | | 2 | C D C C | K1XH | 7 | 24.14 % | | 8 | 23.53 % | | 3 | C D C C C | K6VVK | 7 | 24.14 % | | 9 | 26.47 % | | 4 | C C D C | AG7T | 5 | 17.24 % | | 6 | 17.65 % | | 5 | C C D C C | KB3CS | 2 | 6.90 % | | 2 | 5.88 % | |
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