| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | K0HB | 142 | 33.41 % | | 144 | 31.51 % | | | 2 | C D C C C | K0EWS | 117 | 27.53 % | | 119 | 26.04 % | | | 3 | C C D C C C | CT1DRB | 65 | 15.29 % | | 65 | 14.22 % | | | 4 | C C D C | AC7A | 48 | 11.29 % | | 49 | 10.72 % | | | 5 | C C D C C | AA1UC | 38 | 8.94 % | | 39 | 8.53 % | | | 6 | C D C | K1C | 13 | 3.06 % | | 13 | 2.84 % | | | 7 | D D D D D C | 11111W | 1 | 0.24 % | | 1 | 0.22 % | | | 8 | C D C C C / D | K2YNT/2 | 1 | 0.24 % | | 1 | 0.22 % | |
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