| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CE2WUI | 1365 | 27.05 % | | 2111 | 21.46 % | | 2 | C C D C C | AA0WA | 1077 | 21.34 % | | 2153 | 21.88 % | | 3 | C D C C C | F1AGR | 1016 | 20.13 % | | 1679 | 17.06 % | | 4 | C C D C | AA0O | 714 | 14.15 % | | 1687 | 17.15 % | | 5 | C D C C | E7CW | 666 | 13.20 % | | 1795 | 18.24 % | | 6 | C D D C | E70A | 30 | 0.59 % | | 58 | 0.59 % | | 7 | D C D C C | 3V8SS | 26 | 0.52 % | | 55 | 0.56 % | | 8 | C D D C C | A47HQ | 22 | 0.44 % | | 73 | 0.74 % | | 9 | C D C | C4W | 20 | 0.40 % | | 44 | 0.45 % | | 10 | D C D C C C | 2E0CVN | 12 | 0.24 % | | 12 | 0.12 % | | 11 | C D C C C / C | F4GKR/P | 10 | 0.20 % | | 14 | 0.14 % | | 12 | D C D C | 3Z1K | 10 | 0.20 % | | 29 | 0.29 % | | 13 | C C D C C C / C | DL1ASA/P | 7 | 0.14 % | | 7 | 0.07 % | | 14 | D C / C C D C C | 5B/RN3QO | 5 | 0.10 % | | 8 | 0.08 % | | 15 | C C D D C C C | CS25FOQ | 5 | 0.10 % | | 5 | 0.05 % | | 16 | C C D C C / C | AB9TA/M | 5 | 0.10 % | | 8 | 0.08 % | | 17 | C D C C / D | K3MD/1 | 4 | 0.08 % | | 18 | 0.18 % | | 18 | C C D C / C | AA1K/M | 3 | 0.06 % | | 3 | 0.03 % | | 19 | C C D / C D C C | EA5/R3AR | 3 | 0.06 % | | 5 | 0.05 % | | 20 | C C D D C | OG55W | 3 | 0.06 % | | 5 | 0.05 % | | 21 | C D D C C C | E71EEE | 3 | 0.06 % | | 3 | 0.03 % | | 22 | C D C C C / D | K5EDM/7 | 3 | 0.06 % | | 3 | 0.03 % | | 23 | C C D / C D C C C | EA5/F6DOX | 2 | 0.04 % | | 4 | 0.04 % | | 24 | C C D C / D | AI0Y/9 | 2 | 0.04 % | | 6 | 0.06 % | | 25 | C C D C C / D | AB5ZA/7 | 2 | 0.04 % | | 3 | 0.03 % | | 26 | C C D / C C D C C | EA6/EI6DX | 2 | 0.04 % | | 2 | 0.02 % | | 27 | C C D / C C D C C C | IS0/HB9FAP | 2 | 0.04 % | | 2 | 0.02 % | | 28 | C C D C C C / D | KN4URX/8 | 2 | 0.04 % | | 2 | 0.02 % | | 29 | C C / C C D C C C | LA/PE1WVD | 2 | 0.04 % | | 4 | 0.04 % | | 30 | C C D C C / C C C | VA3GD/QRP | 2 | 0.04 % | | 2 | 0.02 % | | 31 | C D C C C / C C C | W2JJT/QRP | 2 | 0.04 % | | 3 | 0.03 % | | 32 | C C D C / C C C | NB8Q/QRP | 2 | 0.04 % | | 2 | 0.02 % | | 33 | C C D C C C / C C D | VE3BTC/VE3 | 2 | 0.04 % | | 2 | 0.02 % | | 34 | D C D / C C D C C | 9A7/UK1HW | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C D C C C / C C C | KG4RML/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C D C C C C C D C C | K1KNQLZ2ZG | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C / C C D C C C | M/SP4OIA | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C D D D C C | GB100GP | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C C D C C / C C | RA0LQ/MM | 1 | 0.02 % | | 2 | 0.02 % | | 40 | C C / C D C C | DL/K3LR | 1 | 0.02 % | | 2 | 0.02 % | | 41 | C C / C D C C C | SP/I4ZSQ | 1 | 0.02 % | | 1 | 0.01 % | | 42 | C D C C / C C D | K2NV/VE3 | 1 | 0.02 % | | 4 | 0.04 % | | 43 | C D C C C / C C D | K0BBC/VY2 | 1 | 0.02 % | | 6 | 0.06 % | | 44 | C C D C C C / C D | VE3CBK/W1 | 1 | 0.02 % | | 1 | 0.01 % | | 45 | C D C / D D | W0A/50 | 1 | 0.02 % | | 7 | 0.07 % | | 46 | C D D C C / C C C | S51EC/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 47 | C D C C / C | W2PJ/M | 1 | 0.02 % | | 1 | 0.01 % | | 48 | C D C C C / C C | W3GFS/MM | 1 | 0.02 % | | 1 | 0.01 % | | 49 | C D / C D D C C | W9/V31KC | 1 | 0.02 % | | 1 | 0.01 % | |
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