| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0MCR | 35 | 36.84 % | | 35 | 36.08 % | | | 2 | C C D C C C | KA5WMF | 21 | 22.11 % | | 22 | 22.68 % | | | 3 | C D C C | K8PI | 17 | 17.89 % | | 17 | 17.53 % | | | 4 | C C D C C | AA0RW | 13 | 13.68 % | | 13 | 13.40 % | | | 5 | C C D C | AC6X | 5 | 5.26 % | | 5 | 5.15 % | | | 6 | C D C | K0T | 3 | 3.16 % | | 4 | 4.12 % | | | 7 | C D D C C C | K04CTF | 1 | 1.05 % | | 1 | 1.03 % | |
|