| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0TSA | 46 | 38.33 % | | 46 | 37.70 % | | | 2 | C C D C C C | KA8HOK | 28 | 23.33 % | | 28 | 22.95 % | | | 3 | C D C C | K0SW | 20 | 16.67 % | | 20 | 16.39 % | | | 4 | C C D C C | AA2BJ | 14 | 11.67 % | | 14 | 11.48 % | | | 5 | C C D C | AC1W | 11 | 9.17 % | | 11 | 9.02 % | | | 6 | C D C | W9C | 1 | 0.83 % | | 1 | 0.82 % | |
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