| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0LMB | 41 | 35.34 % | | 41 | 32.54 % | | | 2 | C D C C | K0FV | 28 | 24.14 % | | 29 | 23.02 % | | | 3 | C C D C C C | KA8HOK | 21 | 18.10 % | | 21 | 16.67 % | | | 4 | C C D C C | AA4CQ | 11 | 9.48 % | | 11 | 8.73 % | | | 5 | C C D C | AD0B | 8 | 6.90 % | | 8 | 6.35 % | | | 6 | C D C | N0N | 7 | 6.03 % | | 7 | 5.56 % | |
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