| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT7AUP | 257 | 30.82 % | | 287 | 29.38 % | | 2 | C C D C C | CN2AM | 211 | 25.30 % | | 233 | 23.85 % | | 3 | C C D C | AC1U | 200 | 23.98 % | | 264 | 27.02 % | | 4 | C D C C C | F1AGR | 46 | 5.52 % | | 49 | 5.02 % | | 5 | C D D C | A42K | 18 | 2.16 % | | 22 | 2.25 % | | 6 | C D C C | D1DX | 17 | 2.04 % | | 19 | 1.94 % | | 7 | C D D C C | A41NN | 16 | 1.92 % | | 20 | 2.05 % | | 8 | D C D C C | 4L7KA | 14 | 1.68 % | | 14 | 1.43 % | | 9 | D C D C | 3G1D | 12 | 1.44 % | | 17 | 1.74 % | | 10 | C C D D C C C | DL19RIC | 6 | 0.72 % | | 7 | 0.72 % | | 11 | D C D C C C | 7Z1KSU | 5 | 0.60 % | | 6 | 0.61 % | | 12 | C D C | D4C | 5 | 0.60 % | | 6 | 0.61 % | | 13 | C C D D C | LY29A | 5 | 0.60 % | | 7 | 0.72 % | | 14 | C D D C C C | E73EDE | 4 | 0.48 % | | 4 | 0.41 % | | 15 | C C D C C C / D | IZ5TJD/7 | 3 | 0.36 % | | 5 | 0.51 % | | 16 | C C D D C C | DM70ER | 3 | 0.36 % | | 3 | 0.31 % | | 17 | C C D / C C D C C | SV8/DK3SJ | 2 | 0.24 % | | 2 | 0.20 % | | 18 | D C D D C | 9A73A | 1 | 0.12 % | | 1 | 0.10 % | | 19 | D C D D D C | 9A775O | 1 | 0.12 % | | 1 | 0.10 % | | 20 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.12 % | | 2 | 0.20 % | | 21 | C D / C C D C C C | I0/VK4DMP | 1 | 0.12 % | | 1 | 0.10 % | | 22 | C C D D D C C | LZ116RF | 1 | 0.12 % | | 1 | 0.10 % | | 23 | C C D C C C / C | OE5CWO/P | 1 | 0.12 % | | 1 | 0.10 % | | 24 | C D D D C C | R125IL | 1 | 0.12 % | | 1 | 0.10 % | | 25 | C C D D D C | SN100P | 1 | 0.12 % | | 1 | 0.10 % | | 26 | C C D C C / C C C | SV1JG/QRP | 1 | 0.12 % | | 2 | 0.20 % | | 27 | C C D D D C C C | LY800SMG | 1 | 0.12 % | | 1 | 0.10 % | |
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