| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BG5BWZ | 1577 | 34.00 % | | 2087 | 30.26 % | | 2 | C C D C C | AA0AO | 1208 | 26.05 % | | 1819 | 26.37 % | | 3 | C D C C C | F1AGR | 644 | 13.89 % | | 835 | 12.10 % | | 4 | C C D C | AA0O | 631 | 13.61 % | | 1272 | 18.44 % | | 5 | C D C C | E7CW | 224 | 4.83 % | | 285 | 4.13 % | | 6 | D C D C C | 3B8CW | 55 | 1.19 % | | 79 | 1.15 % | | 7 | C D D C C | A61FK | 52 | 1.12 % | | 81 | 1.17 % | | 8 | C D D C | A44A | 46 | 0.99 % | | 111 | 1.61 % | | 9 | D C D C | 3G1D | 42 | 0.91 % | | 77 | 1.12 % | | 10 | C D C | B7P | 38 | 0.82 % | | 85 | 1.23 % | | 11 | D C D C C C | 2D0PEY | 29 | 0.63 % | | 32 | 0.46 % | | 12 | C C D C C C C | VK2FABJ | 13 | 0.28 % | | 13 | 0.19 % | | 13 | C C D D C C C | DL50IFM | 9 | 0.19 % | | 17 | 0.25 % | | 14 | C D D C C C | D68CCC | 6 | 0.13 % | | 12 | 0.17 % | | 15 | C C D C C / C | DH9DX/P | 5 | 0.11 % | | 7 | 0.10 % | | 16 | C C D / C C D C C C | CT7/HB9AAP | 5 | 0.11 % | | 5 | 0.07 % | | 17 | C C D C C C / D | IK1ZOF/3 | 5 | 0.11 % | | 5 | 0.07 % | | 18 | C C D / C C D C | EA5/LN2G | 5 | 0.11 % | | 10 | 0.14 % | | 19 | C D C C C / C | G7UHN/P | 4 | 0.09 % | | 6 | 0.09 % | | 20 | C C D C C C / C | OE5CWO/P | 4 | 0.09 % | | 4 | 0.06 % | | 21 | C C D / C C D C C | EA6/DK5IR | 4 | 0.09 % | | 6 | 0.09 % | | 22 | C C D D C C | OR50AF | 2 | 0.04 % | | 5 | 0.07 % | | 23 | D C D D D C | 5J500D | 2 | 0.04 % | | 5 | 0.07 % | | 24 | C D C C C / D | K1RID/1 | 2 | 0.04 % | | 2 | 0.03 % | | 25 | C C D / C D C C | HR9/N3AD | 2 | 0.04 % | | 9 | 0.13 % | | 26 | C D C C / D | K8UR/4 | 2 | 0.04 % | | 2 | 0.03 % | | 27 | C C D C C C / C C | LU2FLH/MM | 2 | 0.04 % | | 3 | 0.04 % | | 28 | C D C C / C | G2LO/P | 1 | 0.02 % | | 1 | 0.01 % | | 29 | C C C D C C | IXI1IU | 1 | 0.02 % | | 1 | 0.01 % | | 30 | C C D C / C D | AL6U/W6 | 1 | 0.02 % | | 1 | 0.01 % | | 31 | C C D D D C C | GB100GP | 1 | 0.02 % | | 1 | 0.01 % | | 32 | D C D C C C / D | 7K1MAG/2 | 1 | 0.02 % | | 1 | 0.01 % | | 33 | C C / D C D C C | LX/9A7DX | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C C / C D C C C | LX/G1TPA | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C / C C D C C C | LX/PA3DAT | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C C D D D C | CE833T | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C C / C D C C | EI/W5GN | 1 | 0.02 % | | 2 | 0.03 % | | 38 | D C D D C C C | 3Z50DVP | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C C D D D C C C | PH100KLM | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C C D D C | SW44M | 1 | 0.02 % | | 1 | 0.01 % | | 41 | C C D C C C / C C D | VE1AWW/CY0 | 1 | 0.02 % | | 2 | 0.03 % | | 42 | C C / C C D C C | ON/PD1AT | 1 | 0.02 % | | 1 | 0.01 % | | 43 | C D C C C / C C | W1AMD/AE | 1 | 0.02 % | | 1 | 0.01 % | | 44 | C D C C C / C C D | W5MIL/HR9 | 1 | 0.02 % | | 3 | 0.04 % | | 45 | C C D C / C C D | WC1X/VE2 | 1 | 0.02 % | | 1 | 0.01 % | | 46 | C C D C C / C C | YL3IZ/MM | 1 | 0.02 % | | 1 | 0.01 % | | 47 | C C D C C / C C C | YU1LM/QRP | 1 | 0.02 % | | 1 | 0.01 % | |
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