| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | JA8RWU | 72 | 28.69 % | | 72 | 28.69 % | | | 2 | C D C C C | K0QEI | 52 | 20.72 % | | 52 | 20.72 % | | | 3 | C C D C C | AA5TL | 51 | 20.32 % | | 51 | 20.32 % | | | 4 | C D C C | K0OE | 42 | 16.73 % | | 42 | 16.73 % | | | 5 | C C D C | AA2S | 32 | 12.75 % | | 32 | 12.75 % | | | 6 | C D D C C | J68FF | 1 | 0.40 % | | 1 | 0.40 % | | | 7 | C C D C / D | NX3Z/1 | 1 | 0.40 % | | 1 | 0.40 % | |
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