| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | K0AL | 182 | 47.64 % | | 242 | 49.39 % | | | 2 | C C D C | AB4B | 74 | 19.37 % | | 97 | 19.80 % | | | 3 | C D C C C | F8BJO | 61 | 15.97 % | | 73 | 14.90 % | | | 4 | C C D C C | AB3CV | 42 | 10.99 % | | 53 | 10.82 % | | | 5 | C C D C C C | CG2AWR | 22 | 5.76 % | | 23 | 4.69 % | | | 6 | C C D D D D | VX3100 | 1 | 0.26 % | | 2 | 0.41 % | |
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