| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0TSA | 61 | 41.50 % | | 61 | 40.40 % | | | 2 | C C D C C C | KA5CJJ | 34 | 23.13 % | | 34 | 22.52 % | | | 3 | C D C C | K3QY | 28 | 19.05 % | | 30 | 19.87 % | | | 4 | C C D C C | AA0RW | 10 | 6.80 % | | 10 | 6.62 % | | | 5 | C D C | K9E | 8 | 5.44 % | | 8 | 5.30 % | | | 6 | C C D C | AG3U | 6 | 4.08 % | | 6 | 3.97 % | |
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