| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0ANT | 57 | 42.86 % | | 60 | 42.86 % | | 2 | C D C C | K4HJ | 28 | 21.05 % | | 28 | 20.00 % | | 3 | C C D C C C | CG3NSR | 15 | 11.28 % | | 17 | 12.14 % | | 4 | C C D C C | AE0KU | 15 | 11.28 % | | 15 | 10.71 % | | 5 | C D C | K0K | 8 | 6.02 % | | 9 | 6.43 % | | 6 | C C D C | AA4P | 7 | 5.26 % | | 8 | 5.71 % | | 7 | C D D C C | K82RC | 1 | 0.75 % | | 1 | 0.71 % | | 8 | C D C C / C C C | W4CQ/QRP | 1 | 0.75 % | | 1 | 0.71 % | | 9 | C D C C C / D | W9SMR/9 | 1 | 0.75 % | | 1 | 0.71 % | |
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