| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C | CQ9A | 79 | 34.05 % | | 79 | 30.74 % | | | 2 | C C D C C | BH7QP | 59 | 25.43 % | | 59 | 22.96 % | | | 3 | C C D C C C | DG5CST | 53 | 22.84 % | | 53 | 20.62 % | | | 4 | C D C C | E7CW | 17 | 7.33 % | | 17 | 6.61 % | | | 5 | C D D C | E74A | 8 | 3.45 % | | 8 | 3.11 % | | | 6 | D C D C | 7C1C | 4 | 1.72 % | | 4 | 1.56 % | | | 7 | C D C | C4E | 3 | 1.29 % | | 3 | 1.17 % | | | 8 | D C D C C | 4Z5IW | 2 | 0.86 % | | 2 | 0.78 % | | | 9 | C D C C C | R4WDX | 2 | 0.86 % | | 2 | 0.78 % | | | 10 | D C D C C C | 4F2KWT | 1 | 0.43 % | | 1 | 0.39 % | | | 11 | C C D C C / D | BA4DL/0 | 1 | 0.43 % | | 1 | 0.39 % | | | 12 | C C D / C D D C | IG9/S54W | 1 | 0.43 % | | 1 | 0.39 % | | | 13 | C D D C C | S51YI | 1 | 0.43 % | | 1 | 0.39 % | | | 14 | C D D C C C | S57MPU | 1 | 0.43 % | | 1 | 0.39 % | |
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