| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K4BFT | 24 | 41.38 % | | 24 | 41.38 % | | | 2 | C C D C C C | KB5JHW | 21 | 36.21 % | | 21 | 36.21 % | | | 3 | C D C C | K5OQ | 5 | 8.62 % | | 5 | 8.62 % | | | 4 | C C D C C | KJ6DQ | 3 | 5.17 % | | 3 | 5.17 % | | | 5 | C D C | W5R | 3 | 5.17 % | | 3 | 5.17 % | | | 6 | C C D C | AI5M | 2 | 3.45 % | | 2 | 3.45 % | |
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