| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K4FMH | 4 | 33.33 % | | 4 | 33.33 % | | | 2 | C C D C | NR0T | 3 | 25.00 % | | 3 | 25.00 % | | | 3 | C C D C C C | KB1IVE | 2 | 16.67 % | | 2 | 16.67 % | | | 4 | C D C C | K0ND | 1 | 8.33 % | | 1 | 8.33 % | | | 5 | C C D C C | AB0TX | 1 | 8.33 % | | 1 | 8.33 % | | | 6 | C D C | W2E | 1 | 8.33 % | | 1 | 8.33 % | |
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