| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BI4WOP | 707 | 32.73 % | | 831 | 29.23 % | | 2 | C C D C C | BY1AS | 592 | 27.41 % | | 749 | 26.35 % | | 3 | C C D C | CN3A | 425 | 19.68 % | | 712 | 25.04 % | | 4 | C D C C C | F1BRR | 193 | 8.94 % | | 225 | 7.91 % | | 5 | C D C C | D1DX | 63 | 2.92 % | | 84 | 2.95 % | | 6 | C D D C | A44A | 30 | 1.39 % | | 47 | 1.65 % | | 7 | C D D C C | A61FK | 30 | 1.39 % | | 36 | 1.27 % | | 8 | D C D C C | 3A2MG | 28 | 1.30 % | | 41 | 1.44 % | | 9 | D C D C | 3G3N | 26 | 1.20 % | | 34 | 1.20 % | | 10 | C D C | C4T | 20 | 0.93 % | | 33 | 1.16 % | | 11 | D C D C C C | 2E0CNL | 19 | 0.88 % | | 19 | 0.67 % | | 12 | C C D D C C | OZ30EU | 3 | 0.14 % | | 4 | 0.14 % | | 13 | C D D C C C | D68CCC | 3 | 0.14 % | | 4 | 0.14 % | | 14 | C C D C C C / C | IK6TIJ/P | 3 | 0.14 % | | 3 | 0.11 % | | 15 | C C D D C C C | DR50DIG | 3 | 0.14 % | | 3 | 0.11 % | | 16 | C C D / C C D C C | IG9/LZ2SX | 2 | 0.09 % | | 2 | 0.07 % | | 17 | C C / C C D C C | ON/PD1AT | 2 | 0.09 % | | 3 | 0.11 % | | 18 | C C D / C C D C C C | CT7/HB9AAP | 1 | 0.05 % | | 1 | 0.04 % | | 19 | C D / C C D C C C | I0/PB0SJX | 1 | 0.05 % | | 1 | 0.04 % | | 20 | C D C C C C | G3XXPO | 1 | 0.05 % | | 1 | 0.04 % | | 21 | C C D C C C / D | IX1BFL/6 | 1 | 0.05 % | | 2 | 0.07 % | | 22 | D C D D C C C | 3Z50DVP | 1 | 0.05 % | | 2 | 0.07 % | | 23 | C C / C D C C C | LX/G1TPA | 1 | 0.05 % | | 1 | 0.04 % | | 24 | C C C D C C | LZC0AA | 1 | 0.05 % | | 1 | 0.04 % | | 25 | C C D D C | LG80T | 1 | 0.05 % | | 1 | 0.04 % | | 26 | C C / C D D C | ON/Z35M | 1 | 0.05 % | | 1 | 0.04 % | | 27 | C C / C C D C C C | DL/PA3DAT | 1 | 0.05 % | | 1 | 0.04 % | | 28 | C D D C C C / C C C | S56WYB/QRP | 1 | 0.05 % | | 1 | 0.04 % | |
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