| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BH1IOT | 555 | 26.80 % | | 638 | 23.70 % | | 2 | C C D C C | AA5NT | 503 | 24.29 % | | 609 | 22.62 % | | 3 | C C D C | AA1K | 432 | 20.86 % | | 697 | 25.89 % | | 4 | C D C C | E7TT | 230 | 11.11 % | | 292 | 10.85 % | | 5 | C D C C C | F1EBN | 184 | 8.88 % | | 204 | 7.58 % | | 6 | C D D C | A73A | 35 | 1.69 % | | 56 | 2.08 % | | 7 | C D D C C | A61ZX | 29 | 1.40 % | | 42 | 1.56 % | | 8 | D C D C | 3Z1K | 26 | 1.26 % | | 51 | 1.89 % | | 9 | C D C | B1Z | 17 | 0.82 % | | 28 | 1.04 % | | 10 | D C D C C | 4J6RO | 15 | 0.72 % | | 22 | 0.82 % | | 11 | D C D C C C | 2E0EDL | 15 | 0.72 % | | 15 | 0.56 % | | 12 | C D D C C C | E73ESP | 6 | 0.29 % | | 6 | 0.22 % | | 13 | C C D / C C D C C C |
BW2/JP1RIW | 3 | 0.14 % | | 7 | 0.26 % | | 14 | C C D / C C D C | EA8/RA1A | 2 | 0.10 % | | 2 | 0.07 % | | 15 | C C D C C / C C C | TA3IW/QRP | 2 | 0.10 % | | 2 | 0.07 % | | 16 | C C D / C C D C C | EA8/LY2IJ | 2 | 0.10 % | | 4 | 0.15 % | | 17 | D C / C D D C | 9A/S53V | 1 | 0.05 % | | 1 | 0.04 % | | 18 | D C D D C C C | 3Z50AYP | 1 | 0.05 % | | 1 | 0.04 % | | 19 | D C / C D C C | 5B/R2DX | 1 | 0.05 % | | 1 | 0.04 % | | 20 | C D C C C / C | G8UVS/P | 1 | 0.05 % | | 1 | 0.04 % | | 21 | C C D / C D C C | CT9/R9DX | 1 | 0.05 % | | 1 | 0.04 % | | 22 | C D / C C D C C C | I3/IT9STX | 1 | 0.05 % | | 1 | 0.04 % | | 23 | C C D C C C / D | IZ8JFL/1 | 1 | 0.05 % | | 1 | 0.04 % | | 24 | C D / C C D C C | K0/DL7ZM | 1 | 0.05 % | | 1 | 0.04 % | | 25 | C C D C C / C | ON7UZ/M | 1 | 0.05 % | | 1 | 0.04 % | | 26 | C C D D C C | OZ30EU | 1 | 0.05 % | | 1 | 0.04 % | | 27 | C C D D D C C C C | PG200KMAR | 1 | 0.05 % | | 1 | 0.04 % | | 28 | C C D D C C C C | HS50RAST | 1 | 0.05 % | | 2 | 0.07 % | | 29 | C C D D C | TM77M | 1 | 0.05 % | | 1 | 0.04 % | | 30 | C D C C / D | W9OA/9 | 1 | 0.05 % | | 1 | 0.04 % | | 31 | C C D D D D C | YL2014S | 1 | 0.05 % | | 2 | 0.07 % | |
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