| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | A6URY | 253 | 26.52 % | | 308 | 23.91 % | | 2 | C C D C C C | KA1IOR | 231 | 24.21 % | | 274 | 21.27 % | | 3 | C D C C | K0AP | 202 | 21.17 % | | 316 | 24.53 % | | 4 | C C D C | AA3B | 133 | 13.94 % | | 210 | 16.30 % | | 5 | C C D C C | AA0AI | 127 | 13.31 % | | 171 | 13.28 % | | 6 | C D C C C / D | K6WDE/7 | 1 | 0.10 % | | 1 | 0.08 % | | 7 | C D D C C C | K04BIA | 1 | 0.10 % | | 1 | 0.08 % | | 8 | C C D C C C / D | KB6QPI/4 | 1 | 0.10 % | | 1 | 0.08 % | | 9 | C C D C C C / C C | KK6FRJ/AG | 1 | 0.10 % | | 1 | 0.08 % | | 10 | C C D C C / D | KL7ZT/7 | 1 | 0.10 % | | 1 | 0.08 % | | 11 | C D C C / D | N1BZ/3 | 1 | 0.10 % | | 1 | 0.08 % | | 12 | C D D C C | V31XX | 1 | 0.10 % | | 2 | 0.16 % | | 13 | C D C | W0A | 1 | 0.10 % | | 1 | 0.08 % | |
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