| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | CS7AMC | 40 | 32.52 % | | 40 | 32.52 % | | | 2 | C C D C | AA1N | 27 | 21.95 % | | 27 | 21.95 % | | | 3 | C D C C C | I0KNQ | 23 | 18.70 % | | 23 | 18.70 % | | | 4 | C C D C C | AB1EP | 20 | 16.26 % | | 20 | 16.26 % | | | 5 | C D C C | K1AX | 12 | 9.76 % | | 12 | 9.76 % | | | 6 | C D D C | P33W | 1 | 0.81 % | | 1 | 0.81 % | |
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