| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0ANT | 265 | 38.69 % | | 265 | 37.86 % | | | 2 | C C D C C C | CJ3ABN | 153 | 22.34 % | | 153 | 21.86 % | | | 3 | C D C C | K0SW | 133 | 19.42 % | | 133 | 19.00 % | | | 4 | C C D C C | AA4RO | 72 | 10.51 % | | 72 | 10.29 % | | | 5 | C C D C | AE0C | 37 | 5.40 % | | 37 | 5.29 % | | | 6 | C D C | K1R | 23 | 3.36 % | | 23 | 3.29 % | | | 7 | C C D D C C | AC80QX | 1 | 0.15 % | | 1 | 0.14 % | | | 8 | C C D C / C | NI9K/M | 1 | 0.15 % | | 1 | 0.14 % | |
|