| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C C | K0GYQ | 181 | 38.19 % | | 181 | 36.42 % | | 2 | C C D C C C | KA0DOS | 107 | 22.57 % | | 107 | 21.53 % | | 3 | C D C C | I4WL | 98 | 20.68 % | | 98 | 19.72 % | | 4 | C C D C C | AA2XB | 48 | 10.13 % | | 48 | 9.66 % | | 5 | C C D C | AB0O | 24 | 5.06 % | | 24 | 4.83 % | | 6 | C D C | K0M | 15 | 3.16 % | | 15 | 3.02 % | | 7 | C D D C | W32A | 1 | 0.21 % | | 1 | 0.20 % | |
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