| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | A1WB | 562 | 45.25 % | | 997 | 48.07 % | | | 2 | C C D C | AB0S | 242 | 19.48 % | | 400 | 19.29 % | | | 3 | C D C C C | K0ARS | 217 | 17.47 % | | 341 | 16.44 % | | | 4 | C C D C C | AB0RX | 122 | 9.82 % | | 191 | 9.21 % | | | 5 | C C D C C C | KA1IOR | 96 | 7.73 % | | 141 | 6.80 % | | | 6 | C D C C C / D | K8RGI/4 | 1 | 0.08 % | | 1 | 0.05 % | | | 7 | C C D C / D | NW3Y/1 | 1 | 0.08 % | | 2 | 0.10 % | | | 8 | C D C C / D | W1YY/7 | 1 | 0.08 % | | 1 | 0.05 % | |
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