| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | K0JA | 103 | 49.05 % | | 110 | 49.11 % | | 2 | C D C C C | K0IVK | 40 | 19.05 % | | 46 | 20.54 % | | 3 | C C D C | AA7A | 28 | 13.33 % | | 28 | 12.50 % | | 4 | C C D C C C | KA1IOR | 20 | 9.52 % | | 21 | 9.38 % | | 5 | C C D C C | AA2DT | 18 | 8.57 % | | 18 | 8.04 % | | 6 | C D C | K2Z | 1 | 0.48 % | | 1 | 0.45 % | |
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