| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | K0II | 29 | 39.73 % | | 30 | 40.54 % | | | 2 | C D C C C | K0ANT | 27 | 36.99 % | | 27 | 36.49 % | | | 3 | C C D C | AB5X | 6 | 8.22 % | | 6 | 8.11 % | | | 4 | C C D C C | AB9YC | 5 | 6.85 % | | 5 | 6.76 % | | | 5 | C D C | K4M | 3 | 4.11 % | | 3 | 4.05 % | | | 6 | C C D C C C | KF4LXS | 3 | 4.11 % | | 3 | 4.05 % | |
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