| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1JD | 1597 | 27.46 % | | 2816 | 26.61 % | | 2 | C C D C C C | AE5PNL | 1554 | 26.72 % | | 2382 | 22.51 % | | 3 | C C D C | AA1K | 1031 | 17.73 % | | 2296 | 21.70 % | | 4 | C D C C | C5YK | 797 | 13.70 % | | 1640 | 15.50 % | | 5 | C D C C C | C6AGU | 487 | 8.37 % | | 793 | 7.49 % | | 6 | C D D C | A44A | 69 | 1.19 % | | 153 | 1.45 % | | 7 | C D D C C | A61BK | 69 | 1.19 % | | 119 | 1.12 % | | 8 | D C D C C | 3V8SS | 56 | 0.96 % | | 99 | 0.94 % | | 9 | D C D C | 3B8M | 39 | 0.67 % | | 88 | 0.83 % | | 10 | C D C | B4T | 28 | 0.48 % | | 51 | 0.48 % | | 11 | D C D C C C | 2E0CEA | 17 | 0.29 % | | 28 | 0.26 % | | 12 | C C D C C C / D | IK1ZOF/3 | 6 | 0.10 % | | 10 | 0.09 % | | 13 | C C D D C C C | HB90AWS | 6 | 0.10 % | | 9 | 0.09 % | | 14 | C C D / C C D C | EA5/RV2A | 6 | 0.10 % | | 10 | 0.09 % | | 15 | C C D / C C D C C | DV8/KH7EA | 5 | 0.09 % | | 5 | 0.05 % | | 16 | C D D C C C | E20HHK | 4 | 0.07 % | | 8 | 0.08 % | | 17 | C C D D C C | LZ30OJ | 4 | 0.07 % | | 9 | 0.09 % | | 18 | C C D C / D | AI0Y/9 | 3 | 0.05 % | | 5 | 0.05 % | | 19 | C C / C D C C C | FO/F6BCW | 2 | 0.03 % | | 5 | 0.05 % | | 20 | C C D C C / C C C | EA1GT/QRP | 2 | 0.03 % | | 3 | 0.03 % | | 21 | C D C C / D | R8FF/8 | 2 | 0.03 % | | 2 | 0.02 % | | 22 | D C / C C D C C | 5B/RN3QO | 2 | 0.03 % | | 4 | 0.04 % | | 23 | C C / C C D C C | FS/VA3DF | 2 | 0.03 % | | 2 | 0.02 % | | 24 | C C D / C C D C C C | EA8/IK1PMR | 2 | 0.03 % | | 5 | 0.05 % | | 25 | C C D D C | LX75V | 2 | 0.03 % | | 3 | 0.03 % | | 26 | D C D / C C D C C | 8R1/AG6UT | 1 | 0.02 % | | 4 | 0.04 % | | 27 | C C D D D D C C C | DQ1200ASP | 1 | 0.02 % | | 2 | 0.02 % | | 28 | D C D D D C C C | 3Z100PIP | 1 | 0.02 % | | 1 | 0.01 % | | 29 | C / C C D C | F/PA2S | 1 | 0.02 % | | 1 | 0.01 % | | 30 | C / C D C C | F/W0NB | 1 | 0.02 % | | 1 | 0.01 % | | 31 | C D C C C / C C | F5MYK/MM | 1 | 0.02 % | | 1 | 0.01 % | | 32 | C D / C D D C / C | I0/S58Y/P | 1 | 0.02 % | | 2 | 0.02 % | | 33 | D C / C C D C | 9A/AI6V | 1 | 0.02 % | | 3 | 0.03 % | | 34 | C C D C C C / C C | IU1DUB/MM | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C D C / C D | KH7X/W7 | 1 | 0.02 % | | 1 | 0.01 % | | 36 | D C D D C | 4U25B | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C C D / C D C C C | CT7/G4BJM | 1 | 0.02 % | | 6 | 0.06 % | | 38 | C C / C D C C | MW/R6AF | 1 | 0.02 % | | 2 | 0.02 % | | 39 | C C D / C D C C | PJ7/K0CD | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C D C C / C C C | R1FW/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 41 | D C D D C C | 3Z50GR | 1 | 0.02 % | | 1 | 0.01 % | | 42 | C C D C C / D | RZ9SZ/3 | 1 | 0.02 % | | 1 | 0.01 % | | 43 | C D / C D C C C | S5/M0BJL | 1 | 0.02 % | | 1 | 0.01 % | | 44 | C C D D D C C C | SP100PIP | 1 | 0.02 % | | 1 | 0.01 % | | 45 | C C D C C C / C | US7IGN/P | 1 | 0.02 % | | 1 | 0.01 % | | 46 | C C D C C / C | UX1HW/M | 1 | 0.02 % | | 1 | 0.01 % | | 47 | C D / C C D C | V4/WX4G | 1 | 0.02 % | | 1 | 0.01 % | | 48 | C D / C D D C C | W2/E78WW | 1 | 0.02 % | | 1 | 0.01 % | | 49 | C C D C C / C C | YL3IZ/MM | 1 | 0.02 % | | 1 | 0.01 % | |
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