| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0GOB | 173 | 35.89 % | | 173 | 32.58 % | | | 2 | C C D C C C | CR7BPG | 103 | 21.37 % | | 103 | 19.40 % | | | 3 | C D C C | K0GR | 101 | 20.95 % | | 101 | 19.02 % | | | 4 | C C D C C | AA4EK | 58 | 12.03 % | | 58 | 10.92 % | | | 5 | C D C | K0K | 24 | 4.98 % | | 24 | 4.52 % | | | 6 | C C D C | AA9L | 23 | 4.77 % | | 23 | 4.33 % | |
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