| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0AI | 1399 | 27.42 % | | 2423 | 26.57 % | | 2 | C C D C C C | BD0AAI | 1245 | 24.40 % | | 1797 | 19.70 % | | 3 | C C D C | AA1K | 932 | 18.26 % | | 2076 | 22.76 % | | 4 | C D C C | E7DX | 786 | 15.40 % | | 1576 | 17.28 % | | 5 | C D C C C | C6AKQ | 426 | 8.35 % | | 642 | 7.04 % | | 6 | C D D C | C44C | 64 | 1.25 % | | 133 | 1.46 % | | 7 | C D D C C | A45WH | 54 | 1.06 % | | 117 | 1.28 % | | 8 | D C D C C | 3B9HA | 51 | 1.00 % | | 83 | 0.91 % | | 9 | C D C | B1Z | 38 | 0.74 % | | 75 | 0.82 % | | 10 | D C D C | 3G3O | 33 | 0.65 % | | 80 | 0.88 % | | 11 | D C D C C C | 2E0CVN | 11 | 0.22 % | | 13 | 0.14 % | | 12 | C D D C C C | E20QVD | 8 | 0.16 % | | 13 | 0.14 % | | 13 | C C D C C C / D | IZ8JFL/1 | 6 | 0.12 % | | 8 | 0.09 % | | 14 | C C / C C D C C | FR/OH2YL | 5 | 0.10 % | | 5 | 0.05 % | | 15 | C C D D C C C C | DJ90IARU | 3 | 0.06 % | | 7 | 0.08 % | | 16 | C C D / C D C C | DU1/R7KW | 3 | 0.06 % | | 10 | 0.11 % | | 17 | C C / C C D C | DL/NJ3Q | 3 | 0.06 % | | 3 | 0.03 % | | 18 | C C D C / D | RQ4D/7 | 3 | 0.06 % | | 5 | 0.05 % | | 19 | C C D D C | OA85O | 2 | 0.04 % | | 4 | 0.04 % | | 20 | C D C C / D | W8RA/4 | 2 | 0.04 % | | 5 | 0.05 % | | 21 | C C D C C C / C C C |
EA7AAW/QRP | 2 | 0.04 % | | 2 | 0.02 % | | 22 | C C D C C / C C C | EA1GT/QRP | 2 | 0.04 % | | 3 | 0.03 % | | 23 | C C D C C / D | BA1GN/8 | 2 | 0.04 % | | 2 | 0.02 % | | 24 | C C D / C C D C C | HP3/VY2SS | 2 | 0.04 % | | 7 | 0.08 % | | 25 | C C / C D C C C | FG/F6ARC | 2 | 0.04 % | | 2 | 0.02 % | | 26 | D C D / C C D C | 9Y4/WJ2O | 1 | 0.02 % | | 1 | 0.01 % | | 27 | D C D C C C / D | 7N2JZT/6 | 1 | 0.02 % | | 2 | 0.02 % | | 28 | C C D C / C D C C C |
CE0Y/R4WAA | 1 | 0.02 % | | 1 | 0.01 % | | 29 | C C D D D C C C | AT150ITU | 1 | 0.02 % | | 1 | 0.01 % | | 30 | C C D / C C D C | HI3/ND3F | 1 | 0.02 % | | 3 | 0.03 % | | 31 | C / C D D C | F/E72T | 1 | 0.02 % | | 1 | 0.01 % | | 32 | C C D C C C C | DK0WRTC | 1 | 0.02 % | | 4 | 0.04 % | | 33 | C D / C C D C C C | J3/KO8SCA | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C C D C C / C D | KH6MB/W5 | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C D C / C D | KL7R/W7 | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C D C C / C C D | N2WQ/VE3 | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C D C C C / C | F6HBI/P | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C D D D D C C C C C C
OM2015TITANIC | 1 | 0.02 % | | 1 | 0.01 % | | | 39 | C C D C C C / C | DL7USW/P | 1 | 0.02 % | | 2 | 0.02 % | | 40 | C C D C C / C | SP5KD/P | 1 | 0.02 % | | 1 | 0.01 % | | 41 | C C D C / C D C C | UF6V/R6CZ | 1 | 0.02 % | | 3 | 0.03 % | | 42 | C D / C D C C C | W4/G3LIK | 1 | 0.02 % | | 1 | 0.01 % | | 43 | C D D D C C C C | E790IARU | 1 | 0.02 % | | 2 | 0.02 % | | 44 | C C D C / C C C | YU2U/QRP | 1 | 0.02 % | | 1 | 0.01 % | |
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