| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | AM3WRG | 1427 | 30.27 % | | 2688 | 26.57 % | | 2 | C C D C C | AA1SU | 1370 | 29.06 % | | 3187 | 31.50 % | | 3 | C C D C | AA0O | 636 | 13.49 % | | 1827 | 18.06 % | | 4 | C D C C C | D1CTT | 489 | 10.37 % | | 788 | 7.79 % | | 5 | C D C C | B1HQ | 442 | 9.37 % | | 893 | 8.83 % | | 6 | C D D C C | A47HQ | 49 | 1.04 % | | 119 | 1.18 % | | 7 | D C D C C | 3V8SS | 45 | 0.95 % | | 113 | 1.12 % | | 8 | D C D C C C | 2E0CNL | 40 | 0.85 % | | 49 | 0.48 % | | 9 | C D D C | E70A | 39 | 0.83 % | | 89 | 0.88 % | | 10 | C D C | C4W | 24 | 0.51 % | | 70 | 0.69 % | | 11 | C C D C C C / C | DL1RIO/P | 17 | 0.36 % | | 22 | 0.22 % | | 12 | D C D C | 3G3O | 15 | 0.32 % | | 50 | 0.49 % | | 13 | C C D D C C C | DL20IKT | 11 | 0.23 % | | 22 | 0.22 % | | 14 | C D C C C / C | F1BAV/P | 10 | 0.21 % | | 16 | 0.16 % | | 15 | C C D C C C / D | IU2KBP/1 | 9 | 0.19 % | | 11 | 0.11 % | | 16 | C C D D C C | GB19SL | 8 | 0.17 % | | 15 | 0.15 % | | 17 | C D D C C C | E20YLM | 7 | 0.15 % | | 14 | 0.14 % | | 18 | C C / C C D C C | LZ/AE1TP | 6 | 0.13 % | | 8 | 0.08 % | | 19 | D C / C C D C C | 5B/RN3QO | 6 | 0.13 % | | 13 | 0.13 % | | 20 | C C D / C C D C C | EA5/RN3AM | 6 | 0.13 % | | 11 | 0.11 % | | 21 | C C D C C / C | DH9DX/P | 4 | 0.08 % | | 7 | 0.07 % | | 22 | C C / C C D C C C | LA/PE1WVD | 4 | 0.08 % | | 6 | 0.06 % | | 23 | C C D D C | OG55W | 4 | 0.08 % | | 12 | 0.12 % | | 24 | C D C C / D | K3MD/1 | 4 | 0.08 % | | 4 | 0.04 % | | 25 | C C D / C D C C | EA5/R3AR | 3 | 0.06 % | | 7 | 0.07 % | | 26 | C C D / C C D C C C | HB9/PA3GDG | 3 | 0.06 % | | 4 | 0.04 % | | 27 | C C D C / D | AI0Y/9 | 3 | 0.06 % | | 5 | 0.05 % | | 28 | C C D D D C C | GB100GP | 2 | 0.04 % | | 5 | 0.05 % | | 29 | D C D C C / C | 9A4NA/M | 2 | 0.04 % | | 2 | 0.02 % | | 30 | C / C C D C C | F/DK1AF | 2 | 0.04 % | | 2 | 0.02 % | | 31 | C / C C D C C C | F/IU0BMX | 2 | 0.04 % | | 4 | 0.04 % | | 32 | C D C C C / C C C | G6LCS/QRP | 2 | 0.04 % | | 2 | 0.02 % | | 33 | C C D C / C | AA1K/M | 2 | 0.04 % | | 3 | 0.03 % | | 34 | C / C C D C C / C | F/FK8IK/P | 1 | 0.02 % | | 2 | 0.02 % | | 35 | D C D C C C C | 8J3ICOM | 1 | 0.02 % | | 1 | 0.01 % | | 36 | D C / C D D C C | 9A/S57KM | 1 | 0.02 % | | 4 | 0.04 % | | 37 | C C D / C C D C C C / C ' | HB0/DK3RED/P | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C D / C C D C | EA3/OO7W | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C D / C C D C C C | I0/PB0SJX | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C C D C C C / C C C | IN3FWK/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 41 | C C / C D C C | EW/R1AT | 1 | 0.02 % | | 4 | 0.04 % | | 42 | C D C C C / C C D | K0BBC/VY2 | 1 | 0.02 % | | 2 | 0.02 % | | 43 | D C D D C | 4U73B | 1 | 0.02 % | | 1 | 0.01 % | | 44 | C C D / C D C C C | KP4/K6DTT | 1 | 0.02 % | | 2 | 0.02 % | | 45 | C C / C C D C C / C | LA/DK3MJ/P | 1 | 0.02 % | | 1 | 0.01 % | | 46 | D C D C C C / D | 7K1MAG/2 | 1 | 0.02 % | | 1 | 0.01 % | | 47 | C C / C C D C C C / C | LX/EA3AMP/M | 1 | 0.02 % | | 1 | 0.01 % | | 48 | D C / C C D C C C | 9A/OE8HAQ | 1 | 0.02 % | | 4 | 0.04 % | | 49 | C D C C C / C D | M6NNC/K3 | 1 | 0.02 % | | 1 | 0.01 % | | 50 | C C / C C D C | MD/WJ2O | 1 | 0.02 % | | 2 | 0.02 % | | 51 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.02 % | | 3 | 0.03 % | | 52 | C C / C D D C | ON/Z35M | 1 | 0.02 % | | 3 | 0.03 % | | 53 | C C D C C / C C | RA0LQ/MM | 1 | 0.02 % | | 5 | 0.05 % | | 54 | C C D C C C C | TM1MOON | 1 | 0.02 % | | 5 | 0.05 % | | 55 | C C D C C / C C C | YU1LM/QRP | 1 | 0.02 % | | 2 | 0.02 % | |
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