| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | AM3WRG | 1221 | 31.08 % | | 1812 | 26.43 % | | 2 | C C D C C | AA1SU | 1172 | 29.83 % | | 2181 | 31.82 % | | 3 | C C D C | AA3B | 529 | 13.46 % | | 1295 | 18.89 % | | 4 | C D C C C | F1AGR | 399 | 10.16 % | | 535 | 7.80 % | | 5 | C D C C | B1HQ | 302 | 7.69 % | | 471 | 6.87 % | | 6 | C D D C C | A45XR | 42 | 1.07 % | | 96 | 1.40 % | | 7 | D C D C C | 2E0XF | 41 | 1.04 % | | 94 | 1.37 % | | 8 | C D D C | E70A | 37 | 0.94 % | | 80 | 1.17 % | | 9 | D C D C C C | 2E0CRX | 36 | 0.92 % | | 46 | 0.67 % | | 10 | C D C | C4W | 16 | 0.41 % | | 38 | 0.55 % | | 11 | D C D C | 3Z1K | 12 | 0.31 % | | 35 | 0.51 % | | 12 | C C D C C C / C | DL1ASA/P | 12 | 0.31 % | | 13 | 0.19 % | | 13 | C C D D C C C | DL20IKT | 9 | 0.23 % | | 13 | 0.19 % | | 14 | C C D D C C | DK11VP | 8 | 0.20 % | | 9 | 0.13 % | | 15 | C D D C C C | E20NGF | 8 | 0.20 % | | 12 | 0.18 % | | 16 | C D C C C / C | F4GKR/P | 7 | 0.18 % | | 12 | 0.18 % | | 17 | C C D C C C / D | IX1BFL/6 | 7 | 0.18 % | | 9 | 0.13 % | | 18 | C C D C C / C | DG9ZN/M | 5 | 0.13 % | | 5 | 0.07 % | | 19 | C C / C C D C C | LZ/AE1TP | 5 | 0.13 % | | 5 | 0.07 % | | 20 | C C / C C D C C C | DL/PA2HBN | 5 | 0.13 % | | 8 | 0.12 % | | 21 | C C D / C C D C C C | HB9/PA3GDG | 4 | 0.10 % | | 5 | 0.07 % | | 22 | D C / C C D C C | 5B/RN3QO | 4 | 0.10 % | | 8 | 0.12 % | | 23 | C / C C D C C C | F/IU0BMX | 3 | 0.08 % | | 3 | 0.04 % | | 24 | C C D / C C D C C | EA6/DK5ON | 3 | 0.08 % | | 5 | 0.07 % | | 25 | C C D D D C C | GB100GP | 3 | 0.08 % | | 5 | 0.07 % | | 26 | C C D D C | OG55W | 3 | 0.08 % | | 12 | 0.18 % | | 27 | C C D C C C C | DR5ODIG | 3 | 0.08 % | | 5 | 0.07 % | | 28 | C D C C / D | R8MB/1 | 3 | 0.08 % | | 3 | 0.04 % | | 29 | C C D C C / C C C | YU1AM/QRP | 2 | 0.05 % | | 3 | 0.04 % | | 30 | C C D C C C / C C C | DL1BAX/QRP | 2 | 0.05 % | | 2 | 0.03 % | | 31 | C C D C C / C C | DL9YF/MM | 2 | 0.05 % | | 2 | 0.03 % | | 32 | C C D C / D | UD9P/4 | 2 | 0.05 % | | 4 | 0.06 % | | 33 | C C / C D C C | EW/R1AT | 1 | 0.03 % | | 1 | 0.01 % | | 34 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.03 % | | 1 | 0.01 % | | 35 | D C / C D D C | 9A/S51Z | 1 | 0.03 % | | 2 | 0.03 % | | 36 | D C D D C | 4U73B | 1 | 0.03 % | | 1 | 0.01 % | | 37 | C D C C / C | F4KR/P | 1 | 0.03 % | | 1 | 0.01 % | | 38 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.03 % | | 1 | 0.01 % | | 39 | D C D C C C / D | 7K1MAG/2 | 1 | 0.03 % | | 1 | 0.01 % | | 40 | C C D C / C | AA1K/M | 1 | 0.03 % | | 1 | 0.01 % | | 41 | C C D C C C / C C D | IK2AIT/IV3 | 1 | 0.03 % | | 2 | 0.03 % | | 42 | D C D C / C C C | 9A4O/QRP | 1 | 0.03 % | | 1 | 0.01 % | | 43 | C D C C C / C C D | K0BBC/VY2 | 1 | 0.03 % | | 2 | 0.03 % | | 44 | C C D / C D C C C | KP4/K6DTT | 1 | 0.03 % | | 2 | 0.03 % | | 45 | C / C C D C C | F/DK1AF | 1 | 0.03 % | | 1 | 0.01 % | | 46 | C / C C D C C / C | F/FK8IK/P | 1 | 0.03 % | | 1 | 0.01 % | | 47 | C C / C D D C | ON/Z35M | 1 | 0.03 % | | 1 | 0.01 % | | 48 | C C D / C D C C | PJ4/W9SN | 1 | 0.03 % | | 2 | 0.03 % | | 49 | D C / C D D C C | 9A/S57KM | 1 | 0.03 % | | 3 | 0.04 % | | 50 | C D D C C / C C C | S51EC/QRP | 1 | 0.03 % | | 1 | 0.01 % | | 51 | C C / C C D C / C | SP/PA7A/M | 1 | 0.03 % | | 1 | 0.01 % | | 52 | C C D / C C D C | HB0/PC5A | 1 | 0.03 % | | 1 | 0.01 % | | 53 | C C / C C D C C / C | YO/YU7ZZ/P | 1 | 0.03 % | | 1 | 0.01 % | | 54 | D C D C C C / C | 2E0PKH/P | 1 | 0.03 % | | 1 | 0.01 % | |
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