| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BA7ITT | 1839 | 32.64 % | | 2320 | 30.40 % | | 2 | C C D C C | AA0AI | 1292 | 22.93 % | | 1750 | 22.93 % | | 3 | C D C C C | F1ADG | 936 | 16.61 % | | 1247 | 16.34 % | | 4 | C C D C | AA1K | 852 | 15.12 % | | 1302 | 17.06 % | | 5 | C D C C | E7CW | 445 | 7.90 % | | 653 | 8.56 % | | 6 | C D D C C | A61EK | 38 | 0.67 % | | 55 | 0.72 % | | 7 | D C D C C C | 2E0AAS | 36 | 0.64 % | | 43 | 0.56 % | | 8 | D C D C C | 4X1IM | 36 | 0.64 % | | 48 | 0.63 % | | 9 | C D D C | A42K | 36 | 0.64 % | | 47 | 0.62 % | | 10 | C D C | C4W | 25 | 0.44 % | | 38 | 0.50 % | | 11 | D C D C | 3E3E | 21 | 0.37 % | | 26 | 0.34 % | | 12 | C D D C C C | E73FDE | 10 | 0.18 % | | 11 | 0.14 % | | 13 | C C D D C C C | DL30GER | 8 | 0.14 % | | 11 | 0.14 % | | 14 | C D C C C / C | F4KKX/P | 7 | 0.12 % | | 8 | 0.10 % | | 15 | C C D D C | EI20C | 7 | 0.12 % | | 10 | 0.13 % | | 16 | C C D D C C | LY30LY | 6 | 0.11 % | | 10 | 0.13 % | | 17 | C C D C C C / C | KD2AMZ/M | 3 | 0.05 % | | 3 | 0.04 % | | 18 | C D C C C / C C C | N3BAH/QRP | 3 | 0.05 % | | 3 | 0.04 % | | 19 | C C D D D C C | DQ100SL | 2 | 0.04 % | | 2 | 0.03 % | | 20 | C C D / C D C C | HR5/F2JD | 2 | 0.04 % | | 5 | 0.07 % | | 21 | C C D D C C C C | SN95IARU | 2 | 0.04 % | | 2 | 0.03 % | | 22 | C C D C C / C C C | EA4RR/QRP | 2 | 0.04 % | | 3 | 0.04 % | | 23 | C C D C C C / C C C | IK6OGZ/QRP | 2 | 0.04 % | | 2 | 0.03 % | | 24 | C C D C C / D | KH6HU/7 | 2 | 0.04 % | | 2 | 0.03 % | | 25 | D C D D C C C | 3Z50DVP | 2 | 0.04 % | | 3 | 0.04 % | | 26 | C C D C C C C | VK2FSAV | 2 | 0.04 % | | 2 | 0.03 % | | 27 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 28 | C C D / C C D C C C | BW2/JP1RIW | 1 | 0.02 % | | 1 | 0.01 % | | 29 | D C D / C D C C | 5Z4/G3AB | 1 | 0.02 % | | 1 | 0.01 % | | 30 | C D C C / D | K2ZR/4 | 1 | 0.02 % | | 1 | 0.01 % | | 31 | C C D C C / C D | AH6FX/W4 | 1 | 0.02 % | | 1 | 0.01 % | | 32 | C D / C D D C / C | I0/S58Y/P | 1 | 0.02 % | | 1 | 0.01 % | | 33 | D C D D C | 4A60A | 1 | 0.02 % | | 2 | 0.03 % | | 34 | D C / C D C C C | 9A/F4HWS | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C / C D D C | LZ/Z36W | 1 | 0.02 % | | 3 | 0.04 % | | 36 | C C D C / D | AI0Y/9 | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C D C C / C C C | N3OJ/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C D C C C / D | IK5BOH/2 | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C C / C C D C C C | OK/HB9EXB | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C C D D D C C C | OL725PLZ | 1 | 0.02 % | | 2 | 0.03 % | | 41 | C D D D D C | S5400J | 1 | 0.02 % | | 2 | 0.03 % | | 42 | C D C C / C | K5AE/M | 1 | 0.02 % | | 2 | 0.03 % | | 43 | C C D C / C | ND3L/M | 1 | 0.02 % | | 1 | 0.01 % | | 44 | C C D C C / C | VK7VZ/P | 1 | 0.02 % | | 1 | 0.01 % | | 45 | C D / C C D C C | W8/LZ3AW | 1 | 0.02 % | | 1 | 0.01 % | |
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