| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0ANT | 58 | 41.13 % | | 61 | 41.22 % | | 2 | C D C C | K4HJ | 31 | 21.99 % | | 31 | 20.95 % | | 3 | C C D C C C | CG3NSR | 18 | 12.77 % | | 20 | 13.51 % | | 4 | C C D C C | AA9UF | 16 | 11.35 % | | 16 | 10.81 % | | 5 | C D C | K0K | 8 | 5.67 % | | 9 | 6.08 % | | 6 | C C D C | AA4P | 7 | 4.96 % | | 8 | 5.41 % | | 7 | C D D C C | K82RC | 1 | 0.71 % | | 1 | 0.68 % | | 8 | C D C C / C C C | W4CQ/QRP | 1 | 0.71 % | | 1 | 0.68 % | | 9 | C D C C C / D | W9SMR/9 | 1 | 0.71 % | | 1 | 0.68 % | |
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