| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | K0AP | 52 | 33.55 % | | 76 | 35.19 % | | | 2 | C C D C | AA0Z | 42 | 27.10 % | | 62 | 28.70 % | | | 3 | C C D C C | AA2MA | 23 | 14.84 % | | 28 | 12.96 % | | | 4 | C D C C C | K2DFC | 19 | 12.26 % | | 22 | 10.19 % | | | 5 | C C D C C C | KA2KON | 17 | 10.97 % | | 25 | 11.57 % | | | 6 | D C D C | 5K3W | 1 | 0.65 % | | 2 | 0.93 % | | | 7 | C D C C / D | W1AW/4 | 1 | 0.65 % | | 1 | 0.46 % | |
|