| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | AO7HAN | 4151 | 51.66 % | | 8784 | 55.04 % | | 2 | C C D C C | AA4JV | 1739 | 21.64 % | | 3197 | 20.03 % | | 3 | C D C C C | D1CTT | 935 | 11.64 % | | 1717 | 10.76 % | | 4 | C C D C | AA3B | 350 | 4.36 % | | 587 | 3.68 % | | 5 | C D C C | A8OK | 238 | 2.96 % | | 357 | 2.24 % | | 6 | D C D C C | 3A2MW | 76 | 0.95 % | | 148 | 0.93 % | | 7 | D C D C C C | 2E0AHM | 74 | 0.92 % | | 116 | 0.73 % | | 8 | C C D C C C / C C C | DG4FDQ/QRP | 56 | 0.70 % | | 75 | 0.47 % | | 9 | C D D C C | A41ZZ | 56 | 0.70 % | | 102 | 0.64 % | | 10 | C D D C | E70E | 42 | 0.52 % | | 74 | 0.46 % | | 11 | C C D C C C / C | DL1KGT/M | 39 | 0.49 % | | 48 | 0.30 % | | 12 | C C D D C C | AO75AN | 27 | 0.34 % | | 354 | 2.22 % | | 13 | C D C C C / C | F4GPQ/P | 20 | 0.25 % | | 23 | 0.14 % | | 14 | C D C | D1M | 20 | 0.25 % | | 38 | 0.24 % | | 15 | C C D C C / C | DG5CW/P | 19 | 0.24 % | | 24 | 0.15 % | | 16 | C C D C C / C C C | DF2SJ/QRP | 17 | 0.21 % | | 19 | 0.12 % | | 17 | C C D C C C / D | ES7API/5 | 14 | 0.17 % | | 19 | 0.12 % | | 18 | D C D C | 3Z9W | 14 | 0.17 % | | 29 | 0.18 % | | 19 | C D D C C C | E24ZST | 14 | 0.17 % | | 17 | 0.11 % | | 20 | C D C C C / C C C | F4DXX/QRP | 13 | 0.16 % | | 14 | 0.09 % | | 21 | C C D D D C C | DB100FK | 12 | 0.15 % | | 27 | 0.17 % | | 22 | C C D C C / D | HB9RL/9 | 11 | 0.14 % | | 36 | 0.23 % | | 23 | C C D D C C C | AO75URE | 10 | 0.12 % | | 24 | 0.15 % | | 24 | C C D C C C C | II1ALPI | 7 | 0.09 % | | 15 | 0.09 % | | 25 | C C / C C D C C C | DL/OE2BVG | 7 | 0.09 % | | 7 | 0.04 % | | 26 | C C D D C C C C | DP75AFUG | 6 | 0.07 % | | 8 | 0.05 % | | 27 | C C D / C C D C C C | EA5/LA4WKA | 6 | 0.07 % | | 11 | 0.07 % | | 28 | C C D / C C D C C | EA5/OZ3YQ | 5 | 0.06 % | | 9 | 0.06 % | | 29 | C C D C C C / C C D | IT9YHI/IV3 | 4 | 0.05 % | | 5 | 0.03 % | | 30 | C C D D C | CR50Y | 4 | 0.05 % | | 9 | 0.06 % | | 31 | C C / C C D C C | EA/DL5EO | 4 | 0.05 % | | 5 | 0.03 % | | 32 | C D C C C / D | I1ASU/0 | 4 | 0.05 % | | 5 | 0.03 % | | 33 | C C / C D C C C | MM/F5DBT | 3 | 0.04 % | | 3 | 0.02 % | | 34 | C D D D D C C | R1994YU | 3 | 0.04 % | | 4 | 0.03 % | | 35 | C / C C D C C C | F/HA5OKE | 3 | 0.04 % | | 4 | 0.03 % | | 36 | C D / C C D C C C | I0/VA3ITA | 2 | 0.02 % | | 2 | 0.01 % | | 37 | C D / C D C C C | S5/M0MPM | 2 | 0.02 % | | 3 | 0.02 % | | 38 | C D D C C / C C C | T77BV/QRP | 2 | 0.02 % | | 2 | 0.01 % | | 39 | C C D D D C | HF440W | 2 | 0.02 % | | 2 | 0.01 % | | 40 | C D C C C / C C C / C G8YPY/QRP/MM | 1 | 0.01 % | | 1 | 0.01 % | | | 41 | C / C C D C C | F/DJ5IZ | 1 | 0.01 % | | 1 | 0.01 % | | 42 | D C / C C D C C | 9A/DL4PJ | 1 | 0.01 % | | 6 | 0.04 % | | 43 | C C D D D C C C C | DK100DDSR | 1 | 0.01 % | | 2 | 0.01 % | | 44 | C C / C C D C C C / C | EA/OZ1LTQ/P | 1 | 0.01 % | | 2 | 0.01 % | | 45 | D C / C C D C C C | 9A/IZ3NXC | 1 | 0.01 % | | 1 | 0.01 % | | 46 | D C D C C C / C C C | 2E0DEF/QRP | 1 | 0.01 % | | 1 | 0.01 % | | 47 | C C D / C C D C C C / IV3/IU2NKC/QR | 1 | 0.01 % | | 1 | 0.01 % | | | 48 | C C D C C / C D | KH6ND/W7 | 1 | 0.01 % | | 1 | 0.01 % | | 49 | C D / C C D C C | I2/UY2ZA | 1 | 0.01 % | | 1 | 0.01 % | | 50 | D C D C C C C / C | 5P0WARD/X | 1 | 0.01 % | | 1 | 0.01 % | | 51 | C C D D D D C C | OE2024EM | 1 | 0.01 % | | 2 | 0.01 % | | 52 | C C D D C C C C C | OE60RRDXA | 1 | 0.01 % | | 1 | 0.01 % | | 53 | C C / C C D C C / C | OZ/DD1XF/M | 1 | 0.01 % | | 1 | 0.01 % | | 54 | C D D D C | R108M | 1 | 0.01 % | | 1 | 0.01 % | | 55 | C D D D C C | R165NN | 1 | 0.01 % | | 1 | 0.01 % | | 56 | C C C D C C C | LLU6DOT | 1 | 0.01 % | | 1 | 0.01 % | | 57 | C C D C / C | RM1O/P | 1 | 0.01 % | | 1 | 0.01 % | | 58 | C C D C / D | RN2F/1 | 1 | 0.01 % | | 1 | 0.01 % | | 59 | C C C D C C | IKC4IE | 1 | 0.01 % | | 1 | 0.01 % | | 60 | C C D C C C C C C | SP8CLAROV | 1 | 0.01 % | | 1 | 0.01 % | | 61 | C C D C C C / D / C C IU2PLZ/9/QRP | 1 | 0.01 % | | 1 | 0.01 % | | | 62 | C D C C / C | W1ZY/M | 1 | 0.01 % | | 3 | 0.02 % | | 63 | C D / C D C C | W2/F2YS | 1 | 0.01 % | | 1 | 0.01 % | | 64 | C D C C / C D | W2NQ/W7 | 1 | 0.01 % | | 1 | 0.01 % | |
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