| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | HB9CNV | 106 | 68.39 % | | 131 | 65.17 % | | | 2 | C C D C | SN1F | 28 | 18.06 % | | 43 | 21.39 % | | | 3 | C C D C C | SO2TT | 16 | 10.32 % | | 21 | 10.45 % | | | 4 | D C D C | 3Z0X | 2 | 1.29 % | | 3 | 1.49 % | | | 5 | C C D D C C | SN75PW | 1 | 0.65 % | | 1 | 0.50 % | | | 6 | C C D D C | SN75W | 1 | 0.65 % | | 1 | 0.50 % | | | 7 | C C D C C C / D | SP9NSV/7 | 1 | 0.65 % | | 1 | 0.50 % | |
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