| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | JA0ARF | 246 | 89.13 % | | 336 | 90.08 % | | | 2 | C C D C C C / D | JA2DGQ/3 | 13 | 4.71 % | | 17 | 4.56 % | | | 3 | D C D C C C | 7K1JFM | 9 | 3.26 % | | 11 | 2.95 % | | | 4 | C C D C C | JA1CP | 6 | 2.17 % | | 7 | 1.88 % | | | 5 | D C D C C | 8N1FT | 1 | 0.36 % | | 1 | 0.27 % | | | 6 | C C D C C / D | JA4JY/3 | 1 | 0.36 % | | 1 | 0.27 % | |
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