| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AB0ZO | 502 | 28.43 % | | 628 | 29.06 % | | 2 | C C D C | AB2E | 481 | 27.24 % | | 633 | 29.29 % | | 3 | C C D C C C | CT1FPQ | 362 | 20.50 % | | 410 | 18.97 % | | 4 | C D C C | E7CW | 152 | 8.61 % | | 185 | 8.56 % | | 5 | C D C C C | F1AKK | 123 | 6.96 % | | 139 | 6.43 % | | 6 | C D D C | A52O | 31 | 1.76 % | | 35 | 1.62 % | | 7 | C D D C C | E74UK | 24 | 1.36 % | | 27 | 1.25 % | | 8 | D C D C C | 3V8SS | 22 | 1.25 % | | 24 | 1.11 % | | 9 | D C D C | 3E3E | 17 | 0.96 % | | 18 | 0.83 % | | 10 | C D C | D4Z | 16 | 0.91 % | | 20 | 0.93 % | | 11 | C C D D C | DL85K | 6 | 0.34 % | | 9 | 0.42 % | | 12 | C C D D C C C | DL50IFM | 5 | 0.28 % | | 5 | 0.23 % | | 13 | D C D C C C | 2E0CVN | 5 | 0.28 % | | 6 | 0.28 % | | 14 | C C D C C C / C C C | IU1CYF/QRP | 2 | 0.11 % | | 2 | 0.09 % | | 15 | C C D C C C / C | DL7USW/P | 2 | 0.11 % | | 3 | 0.14 % | | 16 | C C D D C C | LZ55HW | 2 | 0.11 % | | 2 | 0.09 % | | 17 | C C / C D C C | EW/R3XA | 1 | 0.06 % | | 1 | 0.05 % | | 18 | D C D / C D C C | 5Z4/G3AB | 1 | 0.06 % | | 1 | 0.05 % | | 19 | C C D / C D C C | CT7/K9PM | 1 | 0.06 % | | 1 | 0.05 % | | 20 | C C D C / C C C | IR9R/QRP | 1 | 0.06 % | | 1 | 0.05 % | | 21 | C D / C D D C | E7/Z35M | 1 | 0.06 % | | 1 | 0.05 % | | 22 | C C D D D C C C | HG120BAY | 1 | 0.06 % | | 1 | 0.05 % | | 23 | C C D C C C C C C C C | OH5STAYHOME | 1 | 0.06 % | | 1 | 0.05 % | | 24 | C C D D D C C | OL902AC | 1 | 0.06 % | | 1 | 0.05 % | | 25 | C D D D D C | S5400J | 1 | 0.06 % | | 1 | 0.05 % | | 26 | C D D C C C | S57NAW | 1 | 0.06 % | | 1 | 0.05 % | | 27 | C C D D C C C C | SN95IARU | 1 | 0.06 % | | 1 | 0.05 % | | 28 | C C / C C D C C | SP/LZ3AW | 1 | 0.06 % | | 1 | 0.05 % | | 29 | C C D C C C / D | SV1BJW/6 | 1 | 0.06 % | | 1 | 0.05 % | | 30 | C C D C C / C C C | YU1LM/QRP | 1 | 0.06 % | | 2 | 0.09 % | |
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