| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD8AES | 2098 | 51.11 % | | 3800 | 53.61 % | | 2 | C C D C C | AA2ZW | 1110 | 27.04 % | | 1823 | 25.72 % | | 3 | C D C C C | F1BAY | 429 | 10.45 % | | 710 | 10.02 % | | 4 | C C D C | AE1N | 149 | 3.63 % | | 230 | 3.24 % | | 5 | C D C C | F2VX | 110 | 2.68 % | | 156 | 2.20 % | | 6 | D C D C C | 3A2MW | 47 | 1.14 % | | 115 | 1.62 % | | 7 | C D D C C | A41CT | 33 | 0.80 % | | 38 | 0.54 % | | 8 | D C D C C C | 2E0BJL | 29 | 0.71 % | | 47 | 0.66 % | | 9 | C D D C | A65D | 21 | 0.51 % | | 32 | 0.45 % | | 10 | C C D C C C / C C C | EA3BAT/QRP | 17 | 0.41 % | | 23 | 0.32 % | | 11 | D C D C | 3Z6O | 7 | 0.17 % | | 47 | 0.66 % | | 12 | C D D C C C | A91KWT | 6 | 0.15 % | | 8 | 0.11 % | | 13 | C D C C C / C | F4IFQ/P | 5 | 0.12 % | | 8 | 0.11 % | | 14 | C C / C C D C C | DL/HA8PG | 4 | 0.10 % | | 4 | 0.06 % | | 15 | C C D C C / C C C | LZ2LE/QRP | 3 | 0.07 % | | 3 | 0.04 % | | 16 | C C D D C C | AN44CO | 3 | 0.07 % | | 4 | 0.06 % | | 17 | C D C C C / C C C | G4APO/QRP | 3 | 0.07 % | | 3 | 0.04 % | | 18 | C C D D D C C | DF100FK | 3 | 0.07 % | | 4 | 0.06 % | | 19 | C C D C C C / C | DL7USW/P | 3 | 0.07 % | | 3 | 0.04 % | | 20 | C C D D C C C | DL50WAF | 2 | 0.05 % | | 2 | 0.03 % | | 21 | C C D D D C | AN100R | 2 | 0.05 % | | 2 | 0.03 % | | 22 | C C D C C / D | LZ3WY/2 | 2 | 0.05 % | | 3 | 0.04 % | | 23 | C C D C C / C | ON7GY/M | 2 | 0.05 % | | 2 | 0.03 % | | 24 | C C D / C C D C C | IK3/UY7LA | 2 | 0.05 % | | 2 | 0.03 % | | 25 | C C D C C C / D | IU8RXY/4 | 2 | 0.05 % | | 2 | 0.03 % | | 26 | C C D D C C C C | HS60RAST | 1 | 0.02 % | | 1 | 0.01 % | | 27 | C C D C C C C | II0LOVE | 1 | 0.02 % | | 1 | 0.01 % | | 28 | D C / C C D C C / C | 9H/VE4SW/P | 1 | 0.02 % | | 1 | 0.01 % | | 29 | C D D C C / C | A41CT/M | 1 | 0.02 % | | 1 | 0.01 % | | 30 | C C D / C C D C C C | EA7/SM4CTI | 1 | 0.02 % | | 3 | 0.04 % | | 31 | D C C D C C C | 4KT4AZE | 1 | 0.02 % | | 1 | 0.01 % | | 32 | D C D C C / C C C | 4X6FB/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 33 | C D C C / C C C | R6FS/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C C D C / C | RO2E/M | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C D D C C / C C C | S52ID/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C C / C C D C C C | SP/OE3FJP | 1 | 0.02 % | | 2 | 0.03 % | | 37 | C C D / C D C C C | SV1/F5VMJ | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C / C D C C C | UN/R6DVV | 1 | 0.02 % | | 2 | 0.03 % | |
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