| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | KA0PQW | 100 | 32.36 % | | 103 | 29.60 % | | | 2 | C D C C C | K0ILP | 81 | 26.21 % | | 82 | 23.56 % | | | 3 | C D C C | K0AP | 53 | 17.15 % | | 56 | 16.09 % | | | 4 | C C D C | AA3R | 41 | 13.27 % | | 44 | 12.64 % | | | 5 | C C D C C | AA5JF | 27 | 8.74 % | | 28 | 8.05 % | | | 6 | C D C | K5B | 4 | 1.29 % | | 4 | 1.15 % | | | 7 | C D C C C / C | K0MEZ/M | 2 | 0.65 % | | 2 | 0.57 % | | | 8 | C C D C / C | KD5S/M | 1 | 0.32 % | | 1 | 0.29 % | |
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