| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1QD | 899 | 28.15 % | | 1276 | 26.06 % | | 2 | C C D C | AA1A | 681 | 21.32 % | | 1239 | 25.30 % | | 3 | C C D C C C | CT1ELZ | 676 | 21.16 % | | 909 | 18.56 % | | 4 | C D C C | E7DX | 462 | 14.46 % | | 773 | 15.79 % | | 5 | C D C C C | F4EGZ | 239 | 7.48 % | | 341 | 6.96 % | | 6 | C D D C | C44C | 51 | 1.60 % | | 76 | 1.55 % | | 7 | C D D C C | A45WH | 50 | 1.57 % | | 75 | 1.53 % | | 8 | D C D C C | 4K6FO | 37 | 1.16 % | | 49 | 1.00 % | | 9 | C D C | B1Z | 30 | 0.94 % | | 51 | 1.04 % | | 10 | D C D C | 3Z1K | 26 | 0.81 % | | 52 | 1.06 % | | 11 | C D D C C C | S57NAW | 3 | 0.09 % | | 3 | 0.06 % | | 12 | C C D D C C C C | DJ90IARU | 3 | 0.09 % | | 3 | 0.06 % | | 13 | C C / C C D C C | OK/LZ3SF | 3 | 0.09 % | | 3 | 0.06 % | | 14 | D C D C C C | 2E0XAR | 3 | 0.09 % | | 4 | 0.08 % | | 15 | C C / C D C C C | DL/W4GKR | 2 | 0.06 % | | 2 | 0.04 % | | 16 | C D / C C D C C C | J3/KO8SCA | 2 | 0.06 % | | 2 | 0.04 % | | 17 | C C D C C C / D | IZ8JFL/1 | 2 | 0.06 % | | 4 | 0.08 % | | 18 | C C / C C D C | DL/NJ3Q | 2 | 0.06 % | | 2 | 0.04 % | | 19 | C C D / C C D C C | PJ6/OH1VR | 2 | 0.06 % | | 2 | 0.04 % | | 20 | C D C C / D | W8RA/4 | 2 | 0.06 % | | 2 | 0.04 % | | 21 | C C D C C C / C C C |
EA7AAW/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 22 | C / C D D C | F/E72T | 1 | 0.03 % | | 1 | 0.02 % | | 23 | C C D C C C / C C D |
IT9RDG/IF9 | 1 | 0.03 % | | 1 | 0.02 % | | 24 | D C D D C C C C | 4Z90IARU | 1 | 0.03 % | | 1 | 0.02 % | | 25 | C C D C C C / C | DL7USW/P | 1 | 0.03 % | | 2 | 0.04 % | | 26 | D C / C D C C | 4X/R1CC | 1 | 0.03 % | | 1 | 0.02 % | | 27 | C C D D D D | OM2015 | 1 | 0.03 % | | 1 | 0.02 % | | 28 | C C D D D D C C C C C C
OM2015TITANIC | 1 | 0.03 % | | 1 | 0.02 % | | | 29 | C C D / C C D C | EA8/YT6W | 1 | 0.03 % | | 1 | 0.02 % | | 30 | C C D C / D | RT9K/7 | 1 | 0.03 % | | 2 | 0.04 % | | 31 | C D D D C C C | S530AZV | 1 | 0.03 % | | 1 | 0.02 % | | 32 | C C D C C C C | DK0WRTC | 1 | 0.03 % | | 4 | 0.08 % | | 33 | C C D C C / C | SP5KD/P | 1 | 0.03 % | | 2 | 0.04 % | | 34 | C C D C / C D C C | UF6V/R6CZ | 1 | 0.03 % | | 3 | 0.06 % | | 35 | C C D / C D C C | VP9/N3AD | 1 | 0.03 % | | 2 | 0.04 % | | 36 | C D D D C C C C | E790IARU | 1 | 0.03 % | | 1 | 0.02 % | | 37 | C C D D C | YT65A | 1 | 0.03 % | | 1 | 0.02 % | | 38 | C C D C C / C C C | YU1LM/QRP | 1 | 0.03 % | | 2 | 0.04 % | | 39 | C C D C / C C C | YU2U/QRP | 1 | 0.03 % | | 1 | 0.02 % | |
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