| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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| 1 | C C D C C C | SN4AAZ | 119 | 74.84 % | | 155 | 70.78 % | | | 2 | C C D C | HF1H | 18 | 11.32 % | | 32 | 14.61 % | | | 3 | C C D C C | SO3RM | 15 | 9.43 % | | 21 | 9.59 % | | | 4 | D C D D C C C | 3Z80SPC | 2 | 1.26 % | | 2 | 0.91 % | | | 5 | C C D D C C | HF15UM | 2 | 1.26 % | | 4 | 1.83 % | | | 6 | D C D C | 3Z1K | 1 | 0.63 % | | 3 | 1.37 % | | | 7 | C C D C C C / C C C | SP6EIY/QRP | 1 | 0.63 % | | 1 | 0.46 % | | | 8 | C C D C C C / D | SP9NSV/7 | 1 | 0.63 % | | 1 | 0.46 % | |
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