| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | K1OA | 1 | 20.00 % | | 1 | 20.00 % | | | 2 | C D C | K1R | 1 | 20.00 % | | 1 | 20.00 % | | | 3 | C D C C C | K3MJW | 1 | 20.00 % | | 1 | 20.00 % | | | 4 | C C D C | WJ8L | 1 | 20.00 % | | 1 | 20.00 % | | | 5 | C C D C C | WX4TC | 1 | 20.00 % | | 1 | 20.00 % | |
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