| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AB4B | 184 | 26.78 % | | 207 | 27.82 % | | 2 | C C D C C | AA0RS | 174 | 25.33 % | | 188 | 25.27 % | | 3 | C C D C C C | CU2ARA | 119 | 17.32 % | | 122 | 16.40 % | | 4 | C D C C C | F4FFZ | 78 | 11.35 % | | 82 | 11.02 % | | 5 | C D C C | K0BX | 74 | 10.77 % | | 78 | 10.48 % | | 6 | C D D C | A73A | 12 | 1.75 % | | 13 | 1.75 % | | 7 | D C D C | 4L0A | 12 | 1.75 % | | 17 | 2.28 % | | 8 | C D D C C | A61SM | 6 | 0.87 % | | 7 | 0.94 % | | 9 | D C D C C C | 2E0EMU | 5 | 0.73 % | | 5 | 0.67 % | | 10 | C C D D C | EM14Y | 5 | 0.73 % | | 5 | 0.67 % | | 11 | D C D C C | 3V8SS | 4 | 0.58 % | | 4 | 0.54 % | | 12 | C D C | C4A | 3 | 0.44 % | | 4 | 0.54 % | | 13 | C C D C C C / C | KC9QFH/M | 2 | 0.29 % | | 2 | 0.27 % | | 14 | C D D C C C | E73ESP | 2 | 0.29 % | | 2 | 0.27 % | | 15 | C C D C C C / D | JL3VUL/3 | 2 | 0.29 % | | 2 | 0.27 % | | 16 | D C D D D C C | 9A708DX | 1 | 0.15 % | | 1 | 0.13 % | | 17 | D C D D D C | 9A705Y | 1 | 0.15 % | | 1 | 0.13 % | | 18 | C C D / C C D C C | PJ2/DD5ZZ | 1 | 0.15 % | | 2 | 0.27 % | | 19 | C C D D C C | RT73GP | 1 | 0.15 % | | 1 | 0.13 % | | 20 | C C D / C C D C C C |
SV9/SV1OAN | 1 | 0.15 % | | 1 | 0.13 % | |
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