| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | DG1ABC | 176 | 41.81 % | | 199 | 43.26 % | | 2 | C C D C C | CU6NS | 155 | 36.82 % | | 168 | 36.52 % | | 3 | C D C C C | F4AYI | 43 | 10.21 % | | 45 | 9.78 % | | 4 | C C D C | EA5J | 13 | 3.09 % | | 13 | 2.83 % | | 5 | C D C C | G6MC | 9 | 2.14 % | | 9 | 1.96 % | | 6 | C D D C C | E73DN | 7 | 1.66 % | | 7 | 1.52 % | | 7 | C C D D C C C | DQ11WCA | 3 | 0.71 % | | 3 | 0.65 % | | 8 | D C D C C | 4Z5RR | 2 | 0.48 % | | 2 | 0.43 % | | 9 | C D D C | S57T | 2 | 0.48 % | | 2 | 0.43 % | | 10 | C C D C C / D | ES1OD/3 | 2 | 0.48 % | | 3 | 0.65 % | | 11 | D C D C C C | 7X3WPL | 2 | 0.48 % | | 2 | 0.43 % | | 12 | C C D C C C C | II0BIKE | 2 | 0.48 % | | 2 | 0.43 % | | 13 | C C D D C C C C | DK70DARC | 1 | 0.24 % | | 1 | 0.22 % | | 14 | C C D D D D C C | LZ1891AO | 1 | 0.24 % | | 1 | 0.22 % | | 15 | C C D D D C C C | OL725PLZ | 1 | 0.24 % | | 1 | 0.22 % | | 16 | C D C C C / C C C | R3JNB/QRP | 1 | 0.24 % | | 1 | 0.22 % | | 17 | D C D D C | 4U75A | 1 | 0.24 % | | 1 | 0.22 % | |
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