| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0GNE | 53 | 31.93 % | | 54 | 32.14 % | | 2 | C D C C | K1IG | 38 | 22.89 % | | 38 | 22.62 % | | 3 | C C D C C C | KA0SIX | 33 | 19.88 % | | 33 | 19.64 % | | 4 | C C D C C | AA5RO | 20 | 12.05 % | | 21 | 12.50 % | | 5 | C C D C | AA3B | 13 | 7.83 % | | 13 | 7.74 % | | 6 | C D C | K1B | 9 | 5.42 % | | 9 | 5.36 % | |
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