| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0ATS | 69 | 47.26 % | | 70 | 46.98 % | | 2 | C D C C | K2HT | 37 | 25.34 % | | 38 | 25.50 % | | 3 | C C D C C C | CG3LON | 17 | 11.64 % | | 17 | 11.41 % | | 4 | C C D C C | AB4KE | 9 | 6.16 % | | 9 | 6.04 % | | 5 | C D C | K0N | 7 | 4.79 % | | 7 | 4.70 % | | 6 | C C D C | KE5O | 7 | 4.79 % | | 8 | 5.37 % | |
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