| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | E3SGB | 242 | 37.99 % | | 242 | 34.72 % | | | 2 | C C D C C C | KA1KNW | 141 | 22.14 % | | 141 | 20.23 % | | | 3 | C D C C | K0GR | 118 | 18.52 % | | 118 | 16.93 % | | | 4 | C C D C C | AA2BJ | 66 | 10.36 % | | 66 | 9.47 % | | | 5 | C C D C | AF2A | 42 | 6.59 % | | 42 | 6.03 % | | | 6 | C D C | K1B | 27 | 4.24 % | | 27 | 3.87 % | | | 7 | C D C C D C | K8GE3A | 1 | 0.16 % | | 1 | 0.14 % | |
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