| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD0AAI | 1551 | 39.86 % | | 2110 | 37.56 % | | 2 | C C D C C | AA1AG | 1096 | 28.17 % | | 1732 | 30.83 % | | 3 | C D C C C | C6AVD | 505 | 12.98 % | | 677 | 12.05 % | | 4 | C C D C | AB6Z | 272 | 6.99 % | | 408 | 7.26 % | | 5 | C D C C | D1DX | 221 | 5.68 % | | 310 | 5.52 % | | 6 | D C D C C | 4L6QL | 37 | 0.95 % | | 91 | 1.62 % | | 7 | C D D C C | A41NN | 33 | 0.85 % | | 43 | 0.77 % | | 8 | C D D C | E72U | 19 | 0.49 % | | 34 | 0.61 % | | 9 | D C D C C C | 2E0EKA | 19 | 0.49 % | | 20 | 0.36 % | | 10 | C C D D C C C | DM80FOC | 13 | 0.33 % | | 17 | 0.30 % | | 11 | C C D C C C / C | DK0WWB/P | 11 | 0.28 % | | 12 | 0.21 % | | 12 | C C D C C C / C C C | EA7AAW/QRP | 10 | 0.26 % | | 31 | 0.55 % | | 13 | D C D C | 3Z9R | 10 | 0.26 % | | 15 | 0.27 % | | 14 | C C D C C / C C C | EA5EQ/QRP | 8 | 0.21 % | | 10 | 0.18 % | | 15 | C D C | E2X | 8 | 0.21 % | | 13 | 0.23 % | | 16 | C C D C C / C | DB7GE/M | 7 | 0.18 % | | 8 | 0.14 % | | 17 | C D C C C / C C C | F5FAB/QRP | 6 | 0.15 % | | 7 | 0.12 % | | 18 | C C D / C C D C C | CS7/DO3HK | 4 | 0.10 % | | 6 | 0.11 % | | 19 | C C D D D C C C | LZ110SAE | 4 | 0.10 % | | 8 | 0.14 % | | 20 | D C D D C | 4X70E | 4 | 0.10 % | | 8 | 0.14 % | | 21 | C C D C C C / D | IK5BOH/2 | 4 | 0.10 % | | 4 | 0.07 % | | 22 | C C D C C / D | EA4FW/7 | 3 | 0.08 % | | 4 | 0.07 % | | 23 | C C / C C D C C | EA/DJ5IZ | 3 | 0.08 % | | 3 | 0.05 % | | 24 | C D D C C C | E72GAN | 3 | 0.08 % | | 3 | 0.05 % | | 25 | C D C C C / C | F4EPU/P | 3 | 0.08 % | | 3 | 0.05 % | | 26 | C C D / C D C C C | EA6/F5MMY | 3 | 0.08 % | | 4 | 0.07 % | | 27 | C C / C D C C | DL/W2MV | 2 | 0.05 % | | 2 | 0.04 % | | 28 | C C / C C D C C C | DL/KM6OKU | 2 | 0.05 % | | 2 | 0.04 % | | 29 | C C D / C D C C | EA5/R3AR | 2 | 0.05 % | | 3 | 0.05 % | | 30 | C C D D D C | HF100I | 2 | 0.05 % | | 4 | 0.07 % | | 31 | C D C C / D | N3SY/4 | 2 | 0.05 % | | 2 | 0.04 % | | 32 | C C D D C C | PI40FL | 2 | 0.05 % | | 2 | 0.04 % | | 33 | C C D / C C D C C C | CT9/DL7MDB | 2 | 0.05 % | | 2 | 0.04 % | | 34 | D C D C C / C | 9A4NA/M | 1 | 0.03 % | | 1 | 0.02 % | | 35 | C C C C C D D | DLEBZ59 | 1 | 0.03 % | | 1 | 0.02 % | | 36 | C C / C C D C | DL/AG7N | 1 | 0.03 % | | 1 | 0.02 % | | 37 | C / C C D C C C / C | F/DL6YBK/P | 1 | 0.03 % | | 1 | 0.02 % | | 38 | C / C C D C C | F/FK8IK | 1 | 0.03 % | | 1 | 0.02 % | | 39 | C / C D C C C | F/G0PZA | 1 | 0.03 % | | 1 | 0.02 % | | 40 | C / C C D C | M/WU5M | 1 | 0.03 % | | 1 | 0.02 % | | 41 | C C D D C C C C | LM90NRRL | 1 | 0.03 % | | 1 | 0.02 % | | 42 | C C D C C C C C | OE6PUPIL | 1 | 0.03 % | | 1 | 0.02 % | | 43 | C C D D C | OG60F | 1 | 0.03 % | | 1 | 0.02 % | | 44 | C C D D C C C C C C | OL90ITALIA | 1 | 0.03 % | | 1 | 0.02 % | | 45 | C C / C D C C C | PA/F1GFK | 1 | 0.03 % | | 1 | 0.02 % | | 46 | C C D D D D C C C | PF2018BOL | 1 | 0.03 % | | 1 | 0.02 % | | 47 | D C C C C C | 2EOKZK | 1 | 0.03 % | | 1 | 0.02 % | | 48 | C D / C C D C C C / C | S5/DL7KJS/P | 1 | 0.03 % | | 1 | 0.02 % | | 49 | C C D C / D | SP9E/6 | 1 | 0.03 % | | 1 | 0.02 % | | 50 | C C D / C C D C C C / C ' | SV3/OK1MAW/M | 1 | 0.03 % | | 1 | 0.02 % | | 51 | C C D C D D D D | UC7A1936 | 1 | 0.03 % | | 1 | 0.02 % | | 52 | C C D C C D D | UX1IM59 | 1 | 0.03 % | | 1 | 0.02 % | | 53 | C C D D D C C | YR630SV | 1 | 0.03 % | | 1 | 0.02 % | |
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