| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K1IEB | 28 | 45.16 % | | 28 | 45.16 % | | | 2 | C C D C C C | KD4MCB | 14 | 22.58 % | | 14 | 22.58 % | | | 3 | C D C C | K5NE | 11 | 17.74 % | | 11 | 17.74 % | | | 4 | C C D C C | AF5FC | 6 | 9.68 % | | 6 | 9.68 % | | | 5 | C C D C | AI5M | 2 | 3.23 % | | 2 | 3.23 % | | | 6 | C D C C C D C | N4TUN2A | 1 | 1.61 % | | 1 | 1.61 % | |
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