| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BA7JMO | 1784 | 52.39 % | | 3687 | 56.62 % | | 2 | C C D C C | AD2AG | 783 | 23.00 % | | 1390 | 21.35 % | | 3 | C D C C C | F1ADG | 359 | 10.54 % | | 680 | 10.44 % | | 4 | C C D C | AE3T | 115 | 3.38 % | | 184 | 2.83 % | | 5 | C D C C | F2VX | 80 | 2.35 % | | 129 | 1.98 % | | 6 | C D D C C | A41ZZ | 35 | 1.03 % | | 53 | 0.81 % | | 7 | D C D C C C | 2E0CVN | 30 | 0.88 % | | 50 | 0.77 % | | 8 | C C D C C C / C | DL0ABT/P | 30 | 0.88 % | | 32 | 0.49 % | | 9 | D C D C C | 4O3RB | 27 | 0.79 % | | 76 | 1.17 % | | 10 | C C D C C C / C C C | DL2AOM/QRP | 24 | 0.70 % | | 30 | 0.46 % | | 11 | C C D C C / C | DG6CA/P | 16 | 0.47 % | | 37 | 0.57 % | | 12 | C C D C C C / D | II1DCI/8 | 14 | 0.41 % | | 18 | 0.28 % | | 13 | C C D C / C | DM2I/P | 12 | 0.35 % | | 15 | 0.23 % | | 14 | C D D C | E76C | 8 | 0.23 % | | 13 | 0.20 % | | 15 | C D C C C / C | F4IGP/P | 8 | 0.23 % | | 9 | 0.14 % | | 16 | C C D D C C C | DK70BAD | 7 | 0.21 % | | 10 | 0.15 % | | 17 | C D C C C / C C C | F4JMJ/QRP | 6 | 0.18 % | | 7 | 0.11 % | | 18 | C D C C / C | G6MC/P | 5 | 0.15 % | | 5 | 0.08 % | | 19 | D C D C | 3Z8Z | 5 | 0.15 % | | 17 | 0.26 % | | 20 | C C D C C / C C C | DK0IW/QRP | 5 | 0.15 % | | 5 | 0.08 % | | 21 | C C D C C / D | IQ1DZ/1 | 4 | 0.12 % | | 4 | 0.06 % | | 22 | C C D D D C C C | AO100WDC | 3 | 0.09 % | | 3 | 0.05 % | | 23 | C D C C C / D | I2NEG/2 | 3 | 0.09 % | | 3 | 0.05 % | | 24 | C C / C C D C C | ER/UT1ZZ | 3 | 0.09 % | | 4 | 0.06 % | | 25 | C / C C D C C C | F/HB9GVX | 3 | 0.09 % | | 4 | 0.06 % | | 26 | C C D C C C C | EM7YOTA | 3 | 0.09 % | | 5 | 0.08 % | | 27 | C C / C C D C C C | DL/UA1AFE | 3 | 0.09 % | | 4 | 0.06 % | | 28 | C C D D C C | HA50HK | 2 | 0.06 % | | 2 | 0.03 % | | 29 | C D C | G4A | 2 | 0.06 % | | 2 | 0.03 % | | 30 | C / C C D C C | I/DC1YL | 2 | 0.06 % | | 3 | 0.05 % | | 31 | D C / C C D C C C | 9A/DL1MFK | 2 | 0.06 % | | 2 | 0.03 % | | 32 | C C D / C C D C C C | EA6/DK1XAM | 2 | 0.06 % | | 2 | 0.03 % | | 33 | C D D C C C | R80YBR | 2 | 0.06 % | | 2 | 0.03 % | | 34 | C D C C C / C C / C | F6GLS/TK/P | 1 | 0.03 % | | 1 | 0.02 % | | 35 | C C / C C D C C C / C | EI/PA3BPV/P | 1 | 0.03 % | | 1 | 0.02 % | | 36 | C D D C C / C C C | E78CB/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 37 | C D / C C D C C C | I0/HB9HYF | 1 | 0.03 % | | 1 | 0.02 % | | 38 | C / C C D C | F/OT4N | 1 | 0.03 % | | 1 | 0.02 % | | 39 | C C / C D C C C | DL/G0IUE | 1 | 0.03 % | | 1 | 0.02 % | | 40 | C C D / C C D C C | IK3/UY7LA | 1 | 0.03 % | | 1 | 0.02 % | | 41 | C C D C / D | HI8T/3 | 1 | 0.03 % | | 1 | 0.02 % | | 42 | D C D C C / C | 9A2HX/P | 1 | 0.03 % | | 2 | 0.03 % | | 43 | C C C C C C | IZEVEH | 1 | 0.03 % | | 1 | 0.02 % | | 44 | C D C / C | M2A/P | 1 | 0.03 % | | 1 | 0.02 % | | 45 | C D C C / D | N1UL/2 | 1 | 0.03 % | | 3 | 0.05 % | | 46 | C C D D C C C C C | PF37EUDXF | 1 | 0.03 % | | 1 | 0.02 % | | 47 | C D D D C | R120R | 1 | 0.03 % | | 2 | 0.03 % | | 48 | C C D C C C / C C D | IZ4WNA/IA5 | 1 | 0.03 % | | 1 | 0.02 % | | 49 | C C D / C C D C C / C | SV8/PA1FJ/P | 1 | 0.03 % | | 2 | 0.03 % | | 50 | C C D D C C C C | SZ65RAAG | 1 | 0.03 % | | 3 | 0.05 % | | 51 | C C D C C C C C | VE3YOUTH | 1 | 0.03 % | | 1 | 0.02 % | |
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