| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD1IIJ | 1916 | 36.18 % | | 3342 | 32.80 % | | 2 | C C D C C | AA1ON | 1531 | 28.91 % | | 2946 | 28.92 % | | 3 | C C D C | AA1K | 843 | 15.92 % | | 2041 | 20.03 % | | 4 | C D C C | D1DX | 343 | 6.48 % | | 606 | 5.95 % | | 5 | C D C C C | C6AGU | 274 | 5.17 % | | 432 | 4.24 % | | 6 | C D D C | A44A | 71 | 1.34 % | | 164 | 1.61 % | | 7 | C D D C C | A61EK | 70 | 1.32 % | | 146 | 1.43 % | | 8 | D C D C C | 3D2AG | 54 | 1.02 % | | 114 | 1.12 % | | 9 | C D C | B4T | 52 | 0.98 % | | 118 | 1.16 % | | 10 | D C D C | 3B8M | 36 | 0.68 % | | 89 | 0.87 % | | 11 | D C D C C C | 2E0CVN | 27 | 0.51 % | | 45 | 0.44 % | | 12 | C C D C C C / D | IK1ZOF/3 | 22 | 0.42 % | | 29 | 0.28 % | | 13 | C C D / C C D C | EA5/RV2A | 6 | 0.11 % | | 9 | 0.09 % | | 14 | C D D C C C | E20HHK | 4 | 0.08 % | | 5 | 0.05 % | | 15 | C C D D C C | LZ30OJ | 4 | 0.08 % | | 11 | 0.11 % | | 16 | C C D / C C D C C C | EA5/PA3FOC | 4 | 0.08 % | | 6 | 0.06 % | | 17 | C C D C C / C C C | BD2BT/QRP | 3 | 0.06 % | | 7 | 0.07 % | | 18 | C C D D C C C | HB90AWS | 3 | 0.06 % | | 9 | 0.09 % | | 19 | C C D / C C D C C | DV8/KH7EA | 3 | 0.06 % | | 7 | 0.07 % | | 20 | C C D D C | LX75V | 3 | 0.06 % | | 6 | 0.06 % | | 21 | C C D D D C C C | HF100PIP | 2 | 0.04 % | | 2 | 0.02 % | | 22 | D C / C C D C C | 5B/RN3QO | 2 | 0.04 % | | 6 | 0.06 % | | 23 | C / C C D C | F/IR7A | 2 | 0.04 % | | 2 | 0.02 % | | 24 | C D C C / D | R8FF/8 | 2 | 0.04 % | | 4 | 0.04 % | | 25 | C C D C C C / C C C | IZ3QCH/QRP | 2 | 0.04 % | | 3 | 0.03 % | | 26 | C C D / C D C C C | CT7/G4BJM | 1 | 0.02 % | | 3 | 0.03 % | | 27 | D C D D C C | 3Z50GR | 1 | 0.02 % | | 1 | 0.01 % | | 28 | D C D D D C C C | 3Z100PIP | 1 | 0.02 % | | 4 | 0.04 % | | 29 | D C D / C C D C C | 8R1/AG6UT | 1 | 0.02 % | | 3 | 0.03 % | | 30 | D C D D C | 4U25B | 1 | 0.02 % | | 5 | 0.05 % | | 31 | C C D D D D C C C | DQ1200ASP | 1 | 0.02 % | | 2 | 0.02 % | | 32 | D C / C C D C | 9A/AI6V | 1 | 0.02 % | | 2 | 0.02 % | | 33 | D C D C C C / D | 7K1MAG/2 | 1 | 0.02 % | | 3 | 0.03 % | | 34 | C C / C C D C | EA/WE9V | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C / C D C C | MW/R6AF | 1 | 0.02 % | | 4 | 0.04 % | | 36 | C C / C D C C C | OH/M0CFW | 1 | 0.02 % | | 4 | 0.04 % | | 37 | C C D C / C C C | OH1D/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C / C C D C C | FS/VA3DF | 1 | 0.02 % | | 2 | 0.02 % | | 39 | C C D C C / C | RV6AA/P | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C C D C C / D | RZ9SZ/3 | 1 | 0.02 % | | 1 | 0.01 % | | 41 | C C D C C C / C | US7IGN/P | 1 | 0.02 % | | 1 | 0.01 % | | 42 | C D / C C D C | V4/WX4G | 1 | 0.02 % | | 1 | 0.01 % | |
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