| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | DK0SU | 30 | 28.57 % | | 31 | 27.93 % | | 2 | C C D C | EV6Z | 28 | 26.67 % | | 30 | 27.03 % | | 3 | C C D C C C | DL5SDN | 26 | 24.76 % | | 28 | 25.23 % | | 4 | C D C C C | F6HDI | 5 | 4.76 % | | 5 | 4.50 % | | 5 | C D C C | D1CW | 5 | 4.76 % | | 5 | 4.50 % | | 6 | C D D C C | E73JO | 3 | 2.86 % | | 3 | 2.70 % | | 7 | C D D C | E74X | 3 | 2.86 % | | 3 | 2.70 % | | 8 | D C D C C | 9A1AA | 2 | 1.90 % | | 2 | 1.80 % | | 9 | D C D C C C | 2E0SDV | 1 | 0.95 % | | 1 | 0.90 % | | 10 | C D D C C C | E73ESP | 1 | 0.95 % | | 1 | 0.90 % | | 11 | C C / C D D C | YU/S56A | 1 | 0.95 % | | 2 | 1.80 % | |
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