| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | JA1HFY | 15 | 37.50 % | | 15 | 37.50 % | | 2 | C C D C C | OM7AG | 12 | 30.00 % | | 12 | 30.00 % | | 3 | C C D C | RN6A | 5 | 12.50 % | | 5 | 12.50 % | | 4 | C D C C | K9OM | 3 | 7.50 % | | 3 | 7.50 % | | 5 | D C D C C C | 7L2MDI | 2 | 5.00 % | | 2 | 5.00 % | | 6 | D C D C C | 4L1BR | 2 | 5.00 % | | 2 | 5.00 % | | 7 | C D C C C | G0MBA | 1 | 2.50 % | | 1 | 2.50 % | |
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