| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CN8MAA | 162 | 36.73 % | | 185 | 36.35 % | | 2 | C C D C C | AC1EB | 102 | 23.13 % | | 115 | 22.59 % | | 3 | C D C C C | F1BKM | 74 | 16.78 % | | 82 | 16.11 % | | 4 | C C D C | DR6R | 54 | 12.24 % | | 74 | 14.54 % | | 5 | D C D C C C | 2E0EFP | 15 | 3.40 % | | 17 | 3.34 % | | 6 | C D C C | F8JU | 12 | 2.72 % | | 12 | 2.36 % | | 7 | C D D C C | A61FK | 4 | 0.91 % | | 5 | 0.98 % | | 8 | D C D C C | 9A2TX | 4 | 0.91 % | | 4 | 0.79 % | | 9 | C D D C | E71E | 4 | 0.91 % | | 5 | 0.98 % | | 10 | C C D C C C / C C C | HA5BDO/QRP | 2 | 0.45 % | | 2 | 0.39 % | | 11 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.23 % | | 1 | 0.20 % | | 12 | D C D C | 9A5O | 1 | 0.23 % | | 1 | 0.20 % | | 13 | C D C | G2Z | 1 | 0.23 % | | 1 | 0.20 % | | 14 | C C / C C D C C C | ES/HB9DUR | 1 | 0.23 % | | 1 | 0.20 % | | 15 | C C D C C C / D | KP4CEL/4 | 1 | 0.23 % | | 1 | 0.20 % | | 16 | C C D C C C / C | MM0JTV/M | 1 | 0.23 % | | 1 | 0.20 % | | 17 | C C D D C | OZ11A | 1 | 0.23 % | | 1 | 0.20 % | | 18 | C C / C D C C C | PA/F1GFK | 1 | 0.23 % | | 1 | 0.20 % | |
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