| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CR7AMH | 696 | 32.03 % | | 829 | 30.05 % | | 2 | C C D C C | AB2DE | 645 | 29.68 % | | 823 | 29.83 % | | 3 | C C D C | AH2R | 381 | 17.53 % | | 562 | 20.37 % | | 4 | C D C C C | F1ACK | 226 | 10.40 % | | 258 | 9.35 % | | 5 | C D C C | A6HA | 45 | 2.07 % | | 57 | 2.07 % | | 6 | C D D C | A44A | 36 | 1.66 % | | 43 | 1.56 % | | 7 | C D D C C | E72JG | 28 | 1.29 % | | 35 | 1.27 % | | 8 | D C D C C | 3V8SS | 25 | 1.15 % | | 30 | 1.09 % | | 9 | C D C | C4A | 24 | 1.10 % | | 34 | 1.23 % | | 10 | D C D C C C | 2E0CNL | 17 | 0.78 % | | 20 | 0.72 % | | 11 | D C D C | 3Z1K | 17 | 0.78 % | | 24 | 0.87 % | | 12 | C D D C C C | E71EEE | 6 | 0.28 % | | 7 | 0.25 % | | 13 | C C D / C C D C C | CT9/DJ2YA | 5 | 0.23 % | | 6 | 0.22 % | | 14 | C D C C C / C | G4WWG/P | 4 | 0.18 % | | 6 | 0.22 % | | 15 | C C D C C C / C | DL7USW/P | 3 | 0.14 % | | 3 | 0.11 % | | 16 | C C D D C C | EO25PY | 2 | 0.09 % | | 2 | 0.07 % | | 17 | C C / D C D C C | DL/4X1DX | 1 | 0.05 % | | 3 | 0.11 % | | 18 | D D C C | 01KI | 1 | 0.05 % | | 1 | 0.04 % | | 19 | D C C C | 7KCI | 1 | 0.05 % | | 1 | 0.04 % | | 20 | D C C D C | 7RG7K | 1 | 0.05 % | | 1 | 0.04 % | | 21 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.05 % | | 1 | 0.04 % | | 22 | C C D / C C C C | DA0/WRTC | 1 | 0.05 % | | 1 | 0.04 % | | 23 | C C D C C C C | DA0WRTC | 1 | 0.05 % | | 3 | 0.11 % | | 24 | C C D D D C | HF500U | 1 | 0.05 % | | 1 | 0.04 % | | 25 | C C D C C / D | IQ8BB/8 | 1 | 0.05 % | | 2 | 0.07 % | | 26 | C C D C C C / C D | IW0GTA/P5 | 1 | 0.05 % | | 2 | 0.07 % | | 27 | C C D D C | OF10A | 1 | 0.05 % | | 2 | 0.07 % | | 28 | C C / C C D C C | PA/SP5PY | 1 | 0.05 % | | 1 | 0.04 % | | 29 | C C D C C / C | UR9MC/M | 1 | 0.05 % | | 1 | 0.04 % | |
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