| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD1IIJ | 1904 | 27.81 % | | 2931 | 23.41 % | | 2 | C C D C C | AA0AI | 1878 | 27.43 % | | 3400 | 27.15 % | | 3 | C C D C | AA1K | 1106 | 16.16 % | | 2556 | 20.41 % | | 4 | C D C C | D1DX | 915 | 13.37 % | | 1771 | 14.14 % | | 5 | C D C C C | F1FPL | 641 | 9.36 % | | 1009 | 8.06 % | | 6 | C D D C C | A45WG | 82 | 1.20 % | | 176 | 1.41 % | | 7 | C D D C | A44A | 66 | 0.96 % | | 154 | 1.23 % | | 8 | D C D C C | 3A2MW | 59 | 0.86 % | | 115 | 0.92 % | | 9 | C D C | B1A | 50 | 0.73 % | | 119 | 0.95 % | | 10 | D C D C | 3E1H | 36 | 0.53 % | | 90 | 0.72 % | | 11 | D C D C C C | 2E0CVN | 21 | 0.31 % | | 31 | 0.25 % | | 12 | C D D C C C | E21YDP | 9 | 0.13 % | | 19 | 0.15 % | | 13 | C C D C C C / D | IZ7JFL/1 | 8 | 0.12 % | | 14 | 0.11 % | | 14 | C C D C / D | NE8O/4 | 5 | 0.07 % | | 13 | 0.10 % | | 15 | C C D C C / D | RW9AV/9 | 4 | 0.06 % | | 4 | 0.03 % | | 16 | C C D C C C / C C C |
EA7AAW/QRP | 4 | 0.06 % | | 4 | 0.03 % | | 17 | C C D D C C C | DP65HSC | 4 | 0.06 % | | 9 | 0.07 % | | 18 | C C D / C D C C C | CT7/F6HBR | 3 | 0.04 % | | 4 | 0.03 % | | 19 | C C / C C D C C C | FH/HB9AMO | 3 | 0.04 % | | 6 | 0.05 % | | 20 | D C D / C C D C C | 5Z4/DJ6TF | 3 | 0.04 % | | 10 | 0.08 % | | 21 | C C D / C C D C C | EA8/DK5AN | 3 | 0.04 % | | 7 | 0.06 % | | 22 | C C / C C D C C | DL/HA5VJ | 2 | 0.03 % | | 5 | 0.04 % | | 23 | C C / C C D C | FG/WJ2O | 2 | 0.03 % | | 2 | 0.02 % | | 24 | C C D D C | EM25S | 2 | 0.03 % | | 5 | 0.04 % | | 25 | C C D / C D C C | CT9/R7KW | 2 | 0.03 % | | 6 | 0.05 % | | 26 | C C D C C C / C | DL7USW/P | 2 | 0.03 % | | 3 | 0.02 % | | 27 | C C D D D C C | DL800JE | 2 | 0.03 % | | 8 | 0.06 % | | 28 | C C D / C C D C C C |
EA8/IK1PMR | 2 | 0.03 % | | 5 | 0.04 % | | 29 | C C D C C / C | RA3AL/M | 2 | 0.03 % | | 2 | 0.02 % | | 30 | C D / C C D C C | R9/UA3TT | 2 | 0.03 % | | 2 | 0.02 % | | 31 | D C D C C C / D | 7N2JZT/6 | 1 | 0.01 % | | 2 | 0.02 % | | 32 | C / C C D C C | F/OM2ZA | 1 | 0.01 % | | 1 | 0.01 % | | 33 | D C D / C C D C C C |
5Z4/DL2RMC | 1 | 0.01 % | | 3 | 0.02 % | | 34 | C C D / C D D C C | EA6/E71DX | 1 | 0.01 % | | 1 | 0.01 % | | 35 | C C D / C C D C | EA8/OH5C | 1 | 0.01 % | | 1 | 0.01 % | | 36 | C C D C C / C C C | EA1GT/QRP | 1 | 0.01 % | | 2 | 0.02 % | | 37 | C / C D C C C | F/G4BJM | 1 | 0.01 % | | 3 | 0.02 % | | 38 | C C D | HA3 | 1 | 0.01 % | | 1 | 0.01 % | | 39 | C C D D C C | HG44FY | 1 | 0.01 % | | 1 | 0.01 % | | 40 | D C D C C / C | 9A5KR/P | 1 | 0.01 % | | 3 | 0.02 % | | 41 | C D C C C / D | K4IQJ/4 | 1 | 0.01 % | | 1 | 0.01 % | | 42 | C D C C / D | K9JF/7 | 1 | 0.01 % | | 1 | 0.01 % | | 43 | C D C C C / C | G4DHF/M | 1 | 0.01 % | | 1 | 0.01 % | | 44 | C C D C / C D | NS6T/W4 | 1 | 0.01 % | | 2 | 0.02 % | | 45 | C D D D D C C | R1941MB | 1 | 0.01 % | | 1 | 0.01 % | | 46 | D C D D C C C | 9A50CBM | 1 | 0.01 % | | 2 | 0.02 % | | 47 | C C D C C / C C | RA0LQ/MM | 1 | 0.01 % | | 2 | 0.02 % | | 48 | D C D D D C C | 9A704DC | 1 | 0.01 % | | 1 | 0.01 % | | 49 | C C / C D C C | FO/K7AR | 1 | 0.01 % | | 2 | 0.02 % | | 50 | C D D D C C C | S570ABC | 1 | 0.01 % | | 5 | 0.04 % | | 51 | C D C C / C C C | W7GS/QRP | 1 | 0.01 % | | 1 | 0.01 % | | 52 | C C D C / C C D | WR6M/VP9 | 1 | 0.01 % | | 1 | 0.01 % | | 53 | C C D C / C C C | YU0W/QRP | 1 | 0.01 % | | 1 | 0.01 % | | 54 | C D D C / C C C | Z35M/QRP | 1 | 0.01 % | | 2 | 0.02 % | |
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