| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | CR3DX | 310 | 32.19 % | | 314 | 32.17 % | | 2 | C C D C | AA3B | 284 | 29.49 % | | 287 | 29.41 % | | 3 | C C D C C C | DA0BCC | 205 | 21.29 % | | 207 | 21.21 % | | 4 | C D C C C | F1UVN | 43 | 4.47 % | | 45 | 4.61 % | | 5 | C D D C | E70T | 20 | 2.08 % | | 21 | 2.15 % | | 6 | C D C C | E7CW | 18 | 1.87 % | | 18 | 1.84 % | | 7 | C D D C C | E73RB | 16 | 1.66 % | | 16 | 1.64 % | | 8 | C D C | C7A | 15 | 1.56 % | | 15 | 1.54 % | | 9 | D C D C C | 3V8SS | 12 | 1.25 % | | 12 | 1.23 % | | 10 | D C D C | 3Z1K | 8 | 0.83 % | | 8 | 0.82 % | | 11 | C C D D C C | EM30UU | 5 | 0.52 % | | 5 | 0.51 % | | 12 | C C D D C C C | DK30FFO | 5 | 0.52 % | | 5 | 0.51 % | | 13 | C C D D C | LZ33E | 4 | 0.42 % | | 4 | 0.41 % | | 14 | C C D D C C C C | DL25GDXF | 3 | 0.31 % | | 3 | 0.31 % | | 15 | C C D D D C C C | HF100LEM | 2 | 0.21 % | | 2 | 0.20 % | | 16 | C D / C D D C | E7/Z35M | 2 | 0.21 % | | 2 | 0.20 % | | 17 | C C D C C C / C | DL2LRT/P | 1 | 0.10 % | | 1 | 0.10 % | | 18 | D C D D D D C C | 3Z1921PS | 1 | 0.10 % | | 2 | 0.20 % | | 19 | D C / C D C C C | 9A/K6BFL | 1 | 0.10 % | | 1 | 0.10 % | | 20 | D C D D C C | 9A10FF | 1 | 0.10 % | | 1 | 0.10 % | | 21 | D C D D C | 9A50Y | 1 | 0.10 % | | 1 | 0.10 % | | 22 | C C D / C C D C C | HB9/DK4YJ | 1 | 0.10 % | | 1 | 0.10 % | | 23 | D C D D C C C | 4U29MAY | 1 | 0.10 % | | 1 | 0.10 % | | 24 | C C D D C C C C C | HG21TISZA | 1 | 0.10 % | | 1 | 0.10 % | | 25 | D C / C D C C | 9A/K7GM | 1 | 0.10 % | | 1 | 0.10 % | | 26 | C C D D D D C C | SQ1921PS | 1 | 0.10 % | | 1 | 0.10 % | | 27 | C C D C C / C C C | YU1LM/QRP | 1 | 0.10 % | | 1 | 0.10 % | |
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