| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | DF1MM | 75 | 43.35 % | | 75 | 43.35 % | | 2 | C C D C C C | DL1RNN | 40 | 23.12 % | | 40 | 23.12 % | | 3 | C C D C | EW6F | 38 | 21.97 % | | 38 | 21.97 % | | 4 | C D C C C | G0CKP | 6 | 3.47 % | | 6 | 3.47 % | | 5 | C D C C | F5IN | 5 | 2.89 % | | 5 | 2.89 % | | 6 | C D D C C | E73RB | 4 | 2.31 % | | 4 | 2.31 % | | 7 | C D D C | E74X | 2 | 1.16 % | | 2 | 1.16 % | | 8 | C C D D D D C | DM2025C | 1 | 0.58 % | | 1 | 0.58 % | | 9 | D C D C C | 9A6TT | 1 | 0.58 % | | 1 | 0.58 % | | 10 | C C D C C / C C C | YU1LM/QRP | 1 | 0.58 % | | 1 | 0.58 % | |
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