| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BI8FZA | 395 | 30.15 % | | 434 | 27.82 % | | 2 | C C D C C | BD7DT | 348 | 26.56 % | | 392 | 25.13 % | | 3 | C C D C | AA3B | 310 | 23.66 % | | 424 | 27.18 % | | 4 | C D C C C | F1AGR | 91 | 6.95 % | | 95 | 6.09 % | | 5 | C D C C | E7CW | 34 | 2.60 % | | 41 | 2.63 % | | 6 | C D D C C | A41NN | 31 | 2.37 % | | 35 | 2.24 % | | 7 | C D D C | A42K | 22 | 1.68 % | | 33 | 2.12 % | | 8 | D C D C | 3Z6V | 16 | 1.22 % | | 22 | 1.41 % | | 9 | D C D C C | 4X1IM | 12 | 0.92 % | | 16 | 1.03 % | | 10 | C D C | D4C | 7 | 0.53 % | | 10 | 0.64 % | | 11 | C C D D C C C | DR19RGD | 7 | 0.53 % | | 9 | 0.58 % | | 12 | D C D C C C | 2E0CVN | 7 | 0.53 % | | 10 | 0.64 % | | 13 | C C D D C | LY29A | 6 | 0.46 % | | 9 | 0.58 % | | 14 | C C D C C C / C | DL0XAX/M | 4 | 0.31 % | | 4 | 0.26 % | | 15 | C C D D D C | EE100V | 2 | 0.15 % | | 3 | 0.19 % | | 16 | C C D D C C | EI19RE | 2 | 0.15 % | | 4 | 0.26 % | | 17 | D C D D C | 4U73B | 2 | 0.15 % | | 3 | 0.19 % | | 18 | C C D C C / C | DJ3NU/P | 1 | 0.08 % | | 1 | 0.06 % | | 19 | C C D D D D C | DM2025C | 1 | 0.08 % | | 1 | 0.06 % | | 20 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.08 % | | 1 | 0.06 % | | 21 | D C D D D C | 9A775O | 1 | 0.08 % | | 2 | 0.13 % | | 22 | C C D D D C C | DA200TF | 1 | 0.08 % | | 1 | 0.06 % | | 23 | C C D C C C C | HB9OVQQ | 1 | 0.08 % | | 1 | 0.06 % | | 24 | C C / C D C C C | LX/G1TPA | 1 | 0.08 % | | 1 | 0.06 % | | 25 | C C D D C C C C | DL70AFUG | 1 | 0.08 % | | 1 | 0.06 % | | 26 | C C D D D C C C | LY800SMG | 1 | 0.08 % | | 2 | 0.13 % | | 27 | C C D C C C C C | LY8OOSMG | 1 | 0.08 % | | 1 | 0.06 % | | 28 | C D D D C C | R125IL | 1 | 0.08 % | | 1 | 0.06 % | | 29 | C C D C / D | RT9T/3 | 1 | 0.08 % | | 1 | 0.06 % | | 30 | C D D C D | S53M5 | 1 | 0.08 % | | 1 | 0.06 % | | 31 | C D D C C C | S57NML | 1 | 0.08 % | | 1 | 0.06 % | |
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