| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CS5CRE | 144 | 36.92 % | | 152 | 36.71 % | | 2 | C C D C C | DB2KT | 138 | 35.38 % | | 150 | 36.23 % | | 3 | C C D C | AF9T | 45 | 11.54 % | | 46 | 11.11 % | | 4 | C D C C C | F1TRE | 25 | 6.41 % | | 27 | 6.52 % | | 5 | C D C C | F2AR | 22 | 5.64 % | | 23 | 5.56 % | | 6 | C C D C / D | BV2A/4 | 2 | 0.51 % | | 2 | 0.48 % | | 7 | C D D C | S51A | 2 | 0.51 % | | 2 | 0.48 % | | 8 | C D D C C | A65BP | 2 | 0.51 % | | 2 | 0.48 % | | 9 | C C D / C D C C | EA6/W3DM | 1 | 0.26 % | | 1 | 0.24 % | | 10 | C / C C D C C | F/DC2IP | 1 | 0.26 % | | 1 | 0.24 % | | 11 | C D C C C / C | F6EAO/P | 1 | 0.26 % | | 1 | 0.24 % | | 12 | C C D C C / C | HA5KN/P | 1 | 0.26 % | | 1 | 0.24 % | | 13 | C C D C C C / C C C | IZ2JPN/QRP | 1 | 0.26 % | | 1 | 0.24 % | | 14 | C C D C C C / D | JE9MBV/9 | 1 | 0.26 % | | 1 | 0.24 % | | 15 | C C D D C C | OG30OJ | 1 | 0.26 % | | 1 | 0.24 % | | 16 | C C D C C / D | RK4HZ/3 | 1 | 0.26 % | | 1 | 0.24 % | | 17 | D C D D D C | 9A207T | 1 | 0.26 % | | 1 | 0.24 % | | 18 | C C D D D C C C C | SE400KISA | 1 | 0.26 % | | 1 | 0.24 % | |
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