| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AB3CX | 176 | 37.77 % | | 179 | 37.53 % | | 2 | C C D C C C | CT1DRB | 141 | 30.26 % | | 145 | 30.40 % | | 3 | C C D C | AA3B | 68 | 14.59 % | | 70 | 14.68 % | | 4 | C D C C C | F5ICC | 22 | 4.72 % | | 22 | 4.61 % | | 5 | C D C C | F2YT | 20 | 4.29 % | | 21 | 4.40 % | | 6 | C D D C | E72U | 7 | 1.50 % | | 7 | 1.47 % | | 7 | C D D C C | S51DX | 7 | 1.50 % | | 7 | 1.47 % | | 8 | D C D C | 9A2R | 6 | 1.29 % | | 6 | 1.26 % | | 9 | C D C | D1M | 4 | 0.86 % | | 4 | 0.84 % | | 10 | D C D C C | 4X1MM | 4 | 0.86 % | | 4 | 0.84 % | | 11 | D C D C C C | 2E0CVN | 2 | 0.43 % | | 2 | 0.42 % | | 12 | D C D C C C C / D | 5P0WARD/5 | 1 | 0.21 % | | 1 | 0.21 % | | 13 | C C D / C C D C | EA5/RV2A | 1 | 0.21 % | | 1 | 0.21 % | | 14 | C C D D C C | EO50FF | 1 | 0.21 % | | 1 | 0.21 % | | 15 | C C D / C C D C C C | IV3/HB9CAT | 1 | 0.21 % | | 1 | 0.21 % | | 16 | C C D C C C C | LX5WARD | 1 | 0.21 % | | 1 | 0.21 % | | 17 | C C D D C C C | OL75KCR | 1 | 0.21 % | | 1 | 0.21 % | | 18 | C D / C D D C | E7/Z35M | 1 | 0.21 % | | 1 | 0.21 % | | 19 | C C D D D C C C | SX200JFL | 1 | 0.21 % | | 1 | 0.21 % | | 20 | C C D C C / C C C | YU1LM/QRP | 1 | 0.21 % | | 2 | 0.42 % | |
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