| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | DL1ZBO | 41 | 37.96 % | | 49 | 36.57 % | | 2 | C C D C C | DK2WH | 29 | 26.85 % | | 37 | 27.61 % | | 3 | C C D C | DP7D | 21 | 19.44 % | | 28 | 20.90 % | | 4 | C D C C C | F4EGA | 11 | 10.19 % | | 13 | 9.70 % | | 5 | D C D C | 7S2A | 2 | 1.85 % | | 2 | 1.49 % | | 6 | C C D D C | OG66X | 2 | 1.85 % | | 3 | 2.24 % | | 7 | D C D C C C | 2E0INN | 1 | 0.93 % | | 1 | 0.75 % | | 8 | C C D D C C C C | DL21EURO | 1 | 0.93 % | | 1 | 0.75 % | |
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