| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | DA0HQ | 170 | 40.38 % | | 248 | 40.06 % | | 2 | C C D C | DJ5I | 126 | 29.93 % | | 204 | 32.96 % | | 3 | C C D C C C | CT9ABO | 72 | 17.10 % | | 87 | 14.05 % | | 4 | C D C C | R1DX | 23 | 5.46 % | | 32 | 5.17 % | | 5 | C D D C | E70A | 8 | 1.90 % | | 11 | 1.78 % | | 6 | D C D C C | 4X1VF | 6 | 1.43 % | | 11 | 1.78 % | | 7 | C D D C C | S50HQ | 6 | 1.43 % | | 14 | 2.26 % | | 8 | C D C C C | F4VIQ | 4 | 0.95 % | | 4 | 0.65 % | | 9 | C C C C C | YROHQ | 2 | 0.48 % | | 2 | 0.32 % | | 10 | D C D C | 9A7T | 1 | 0.24 % | | 1 | 0.16 % | | 11 | C D C | P3X | 1 | 0.24 % | | 3 | 0.48 % | | 12 | C C D C D | YL9W2 | 1 | 0.24 % | | 1 | 0.16 % | | 13 | C C D D C | YR34A | 1 | 0.24 % | | 1 | 0.16 % | |
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