| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0FO | 226 | 27.33 % | | 253 | 26.03 % | | 2 | C C D C C C | BI1NEI | 222 | 26.84 % | | 251 | 25.82 % | | 3 | C C D C | AA3B | 175 | 21.16 % | | 220 | 22.63 % | | 4 | C D C C C | F4AIF | 77 | 9.31 % | | 94 | 9.67 % | | 5 | C D C C | G1YZ | 72 | 8.71 % | | 92 | 9.47 % | | 6 | C D D C | E72U | 17 | 2.06 % | | 17 | 1.75 % | | 7 | C D C | G1N | 7 | 0.85 % | | 9 | 0.93 % | | 8 | D C D C | 3W9A | 7 | 0.85 % | | 9 | 0.93 % | | 9 | D C D C C C | 4E1FKB | 4 | 0.48 % | | 4 | 0.41 % | | 10 | D C D C C | 4F3BZ | 4 | 0.48 % | | 4 | 0.41 % | | 11 | C D D C C | E77EA | 3 | 0.36 % | | 3 | 0.31 % | | 12 | C C D C / D | NE8O/4 | 2 | 0.24 % | | 3 | 0.31 % | | 13 | C C D D C C C | DQ55DIG | 2 | 0.24 % | | 3 | 0.31 % | | 14 | C C / C C D C C | ER/UT1ZZ | 1 | 0.12 % | | 1 | 0.10 % | | 15 | C C D D D C C | DB100FK | 1 | 0.12 % | | 2 | 0.21 % | | 16 | C C D D C C C C | HS60RAST | 1 | 0.12 % | | 1 | 0.10 % | | 17 | C C D C C C / D | JA4XHF/3 | 1 | 0.12 % | | 1 | 0.10 % | | 18 | C C D C C C C | KG3KQGV | 1 | 0.12 % | | 1 | 0.10 % | | 19 | D C D D C | 9A30T | 1 | 0.12 % | | 1 | 0.10 % | | 20 | C D / C D C C C | S5/M0MPM | 1 | 0.12 % | | 1 | 0.10 % | | 21 | C D D C C C | S57SWR | 1 | 0.12 % | | 1 | 0.10 % | | 22 | C C D C C / C C C | YU1LM/QRP | 1 | 0.12 % | | 1 | 0.10 % | |
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