| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT1EGW | 199 | 40.04 % | | 213 | 40.49 % | | 2 | C C D C C | DB3JK | 172 | 34.61 % | | 180 | 34.22 % | | 3 | C D C C C | F4AYI | 53 | 10.66 % | | 55 | 10.46 % | | 4 | C C D C | EA1X | 32 | 6.44 % | | 32 | 6.08 % | | 5 | C D C C | F2IL | 19 | 3.82 % | | 22 | 4.18 % | | 6 | D C D C C C | 2E0XPW | 3 | 0.60 % | | 3 | 0.57 % | | 7 | C D D C C | E72TR | 3 | 0.60 % | | 3 | 0.57 % | | 8 | C C D D C C | RM65LP | 3 | 0.60 % | | 3 | 0.57 % | | 9 | D C D C | 3Z8Z | 3 | 0.60 % | | 3 | 0.57 % | | 10 | D C D C C | 9A2UU | 3 | 0.60 % | | 4 | 0.76 % | | 11 | C D D C | E77O | 2 | 0.40 % | | 3 | 0.57 % | | 12 | C D D D C C | A450NN | 1 | 0.20 % | | 1 | 0.19 % | | 13 | C C D D C C C C C C | OP20FENIKS | 1 | 0.20 % | | 1 | 0.19 % | | 14 | C C D D C C C C C C C C OR20STAYHOME | 1 | 0.20 % | | 1 | 0.19 % | | | 15 | C D C | G5Q | 1 | 0.20 % | | 1 | 0.19 % | | 16 | C C D C C / C C C | UT2LA/QRP | 1 | 0.20 % | | 1 | 0.19 % | |
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