| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0TSA | 71 | 47.33 % | | 71 | 46.71 % | | | 2 | C C D C C C | KA5CJJ | 35 | 23.33 % | | 35 | 23.03 % | | | 3 | C D C C | K5BR | 23 | 15.33 % | | 23 | 15.13 % | | | 4 | C C D C C | AD4GG | 12 | 8.00 % | | 12 | 7.89 % | | | 5 | C C D C | AI5M | 5 | 3.33 % | | 5 | 3.29 % | | | 6 | C D C | W0W | 3 | 2.00 % | | 3 | 1.97 % | | | 7 | C D C C C D C | N4TUN2A | 1 | 0.67 % | | 1 | 0.66 % | |
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