| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BH4SCF | 539 | 32.73 % | | 621 | 30.44 % | | 2 | C C D C C | BD5RV | 510 | 30.97 % | | 620 | 30.39 % | | 3 | C C D C | AD4Z | 336 | 20.40 % | | 470 | 23.04 % | | 4 | C D C C C | F1AEY | 88 | 5.34 % | | 103 | 5.05 % | | 5 | C D C C | E7CW | 38 | 2.31 % | | 48 | 2.35 % | | 6 | C D D C C | A25HQ | 26 | 1.58 % | | 30 | 1.47 % | | 7 | C D D C | A61K | 22 | 1.34 % | | 32 | 1.57 % | | 8 | D C D C | 3G1B | 15 | 0.91 % | | 22 | 1.08 % | | 9 | C D D C C C | E21EIC | 11 | 0.67 % | | 11 | 0.54 % | | 10 | C D C | B1Z | 11 | 0.67 % | | 17 | 0.83 % | | 11 | D C D C C | 3V8BB | 8 | 0.49 % | | 11 | 0.54 % | | 12 | D C D C C C | 2E0CGT | 7 | 0.43 % | | 7 | 0.34 % | | 13 | C C D D C | LY22A | 5 | 0.30 % | | 8 | 0.39 % | | 14 | C C D C C C / D | HI8LAM/3 | 3 | 0.18 % | | 3 | 0.15 % | | 15 | D C D D D C | 9A207T | 2 | 0.12 % | | 2 | 0.10 % | | 16 | C C / C C D C C | OZ/SP1OT | 2 | 0.12 % | | 2 | 0.10 % | | 17 | C C D D C C C | DM50UEA | 2 | 0.12 % | | 3 | 0.15 % | | 18 | C C D C C / C C C | EA1GT/QRP | 2 | 0.12 % | | 4 | 0.20 % | | 19 | C C D D D C | EI100T | 2 | 0.12 % | | 2 | 0.10 % | | 20 | C D D D C C | E720RS | 1 | 0.06 % | | 2 | 0.10 % | | 21 | C C / C D C C | EI/W5GN | 1 | 0.06 % | | 1 | 0.05 % | | 22 | D C D D D C C | 9A202GA | 1 | 0.06 % | | 1 | 0.05 % | | 23 | C D C C C / C | G0PBV/M | 1 | 0.06 % | | 1 | 0.05 % | | 24 | D C D D C | 9A22P | 1 | 0.06 % | | 2 | 0.10 % | | 25 | C C C D C C C | EUA4NDX | 1 | 0.06 % | | 2 | 0.10 % | | 26 | C D C C C / C C C | I2BPP/QRP | 1 | 0.06 % | | 1 | 0.05 % | | 27 | C C D / C C D C C | IK2/DF5DN | 1 | 0.06 % | | 1 | 0.05 % | | 28 | C C D C C C / C C C | IN3HUU/QRP | 1 | 0.06 % | | 1 | 0.05 % | | 29 | C D / C C D C C C | I2/IZ3IBL | 1 | 0.06 % | | 1 | 0.05 % | | 30 | C C D D C C C C | LZ12FDAY | 1 | 0.06 % | | 1 | 0.05 % | | 31 | C D C C D | N2BJ0 | 1 | 0.06 % | | 1 | 0.05 % | | 32 | C C D D D C C C | DM800ANH | 1 | 0.06 % | | 1 | 0.05 % | | 33 | C C D C C / C | OZ2CA/P | 1 | 0.06 % | | 1 | 0.05 % | | 34 | C C / C C D C C C | PA/DL1KSR | 1 | 0.06 % | | 2 | 0.10 % | | 35 | C C D C C / D | RU4CS/6 | 1 | 0.06 % | | 1 | 0.05 % | | 36 | C C D / C C D C C C | SV8/SV1PBH | 1 | 0.06 % | | 1 | 0.05 % | | 37 | C C D / C D C C | VY2/K5WA | 1 | 0.06 % | | 3 | 0.15 % | |
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