| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | K2YG | 9 | 34.62 % | | 10 | 37.04 % | | | 2 | C D C C C | K4VRC | 6 | 23.08 % | | 6 | 22.22 % | | | 3 | C C D C | KH6J | 4 | 15.38 % | | 4 | 14.81 % | | | 4 | C C D C C C | KC0FOT | 3 | 11.54 % | | 3 | 11.11 % | | | 5 | C C D C C | AC8RC | 3 | 11.54 % | | 3 | 11.11 % | | | 6 | C D C | W4T | 1 | 3.85 % | | 1 | 3.70 % | |
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