| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | CN3A | 38 | 52.05 % | | 38 | 52.05 % | | 2 | C C D C C | CQ7DX | 13 | 17.81 % | | 13 | 17.81 % | | 3 | C C D C C C | BD7LMD | 5 | 6.85 % | | 5 | 6.85 % | | 4 | C D D C | A42K | 4 | 5.48 % | | 4 | 5.48 % | | 5 | C D C C | K1LZ | 3 | 4.11 % | | 3 | 4.11 % | | 6 | D C D C C | 4K6FO | 3 | 4.11 % | | 3 | 4.11 % | | 7 | D C D C | 4X7M | 2 | 2.74 % | | 2 | 2.74 % | | 8 | C D D C C | A61BR | 2 | 2.74 % | | 2 | 2.74 % | | 9 | C D C | D4C | 1 | 1.37 % | | 1 | 1.37 % | | 10 | D C D D C | 9A44A | 1 | 1.37 % | | 1 | 1.37 % | | 11 | C D C C C | K2SSS | 1 | 1.37 % | | 1 | 1.37 % | |
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