| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | DG7NFX | 37 | 33.94 % | | 37 | 33.94 % | | 2 | C C D C C | DF2RG | 36 | 33.03 % | | 36 | 33.03 % | | 3 | C C D C | DP6K | 17 | 15.60 % | | 17 | 15.60 % | | 4 | C D C C C | F4FSY | 8 | 7.34 % | | 8 | 7.34 % | | 5 | C D C | G3P | 4 | 3.67 % | | 4 | 3.67 % | | 6 | C D D C C | S52WW | 2 | 1.83 % | | 2 | 1.83 % | | 7 | C D C C | R1AV | 2 | 1.83 % | | 2 | 1.83 % | | 8 | C C D D D D C C C | OE1970WWL | 1 | 0.92 % | | 1 | 0.92 % | | 9 | D C D C C | 9A1AA | 1 | 0.92 % | | 1 | 0.92 % | | 10 | C D D C | S57X | 1 | 0.92 % | | 1 | 0.92 % | |
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