| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD4AKT | 699 | 44.35 % | | 831 | 42.99 % | | 2 | C C D C C | AA3LX | 460 | 29.19 % | | 570 | 29.49 % | | 3 | C D C C C | F1DHX | 179 | 11.36 % | | 216 | 11.17 % | | 4 | C C D C | DL0X | 93 | 5.90 % | | 145 | 7.50 % | | 5 | C D C C | F3GQ | 46 | 2.92 % | | 58 | 3.00 % | | 6 | C C D D C C | CN17AM | 14 | 0.89 % | | 14 | 0.72 % | | 7 | C D D C C | E74ZZ | 14 | 0.89 % | | 17 | 0.88 % | | 8 | D C D C C C | 2E0BJL | 13 | 0.82 % | | 16 | 0.83 % | | 9 | D C D C C | 4F1OZ | 12 | 0.76 % | | 13 | 0.67 % | | 10 | C D D C | E72U | 9 | 0.57 % | | 10 | 0.52 % | | 11 | C C D C C C C C C C C | EH7STAYHOME | 5 | 0.32 % | | 7 | 0.36 % | | 12 | C C D D C C C | OE25FKS | 3 | 0.19 % | | 3 | 0.16 % | | 13 | C C D C C C / C C C | OZ1FKU/QRP | 3 | 0.19 % | | 3 | 0.16 % | | 14 | C C D C C / C | DK7JQ/P | 3 | 0.19 % | | 3 | 0.16 % | | 15 | C D C | G2U | 2 | 0.13 % | | 2 | 0.10 % | | 16 | C D C C C / C C C | G4PDR/QRP | 2 | 0.13 % | | 2 | 0.10 % | | 17 | C C D D D C C | GB200FN | 2 | 0.13 % | | 2 | 0.10 % | | 18 | C C D D C | OG66X | 2 | 0.13 % | | 2 | 0.10 % | | 19 | C C D D C C C C | DP70DARC | 1 | 0.06 % | | 1 | 0.05 % | | 20 | C C D C C C / C | EA4GLG/M | 1 | 0.06 % | | 1 | 0.05 % | | 21 | D C D D C | 4Z75V | 1 | 0.06 % | | 1 | 0.05 % | | 22 | C C D D D D C C | GB1945PE | 1 | 0.06 % | | 1 | 0.05 % | | 23 | C C D D D C C C C | HF100JPII | 1 | 0.06 % | | 1 | 0.05 % | | 24 | D C D C | 9A7T | 1 | 0.06 % | | 2 | 0.10 % | | 25 | C C / C D C C C | DL/F5IXR | 1 | 0.06 % | | 1 | 0.05 % | | 26 | C C D D D C | LY175Z | 1 | 0.06 % | | 3 | 0.16 % | | 27 | C C D C C C C | OR4LIFE | 1 | 0.06 % | | 1 | 0.05 % | | 28 | C D D C C C | E21YDP | 1 | 0.06 % | | 2 | 0.10 % | | 29 | C C / C C D C C | PA/KX4UI | 1 | 0.06 % | | 1 | 0.05 % | | 30 | C C D D C C C C C C C | PA75FREEDOM | 1 | 0.06 % | | 1 | 0.05 % | | 31 | C C D C C / C C C | PD9RB/QRP | 1 | 0.06 % | | 1 | 0.05 % | | 32 | C C D C C / D | TA2AO/4 | 1 | 0.06 % | | 1 | 0.05 % | | 33 | C C / C C D C C C | ZA/IZ7PMQ | 1 | 0.06 % | | 1 | 0.05 % | |
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