| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | KA0BWB | 239 | 37.88 % | | 244 | 35.83 % | | | 2 | C D C C C | K0ING | 179 | 28.37 % | | 181 | 26.58 % | | | 3 | C C D C C | AA0AM | 82 | 13.00 % | | 85 | 12.48 % | | | 4 | C D C C | K1BZ | 56 | 8.87 % | | 59 | 8.66 % | | | 5 | C C D C | AB1W | 54 | 8.56 % | | 54 | 7.93 % | | | 6 | C D C C C / C | K5ZZR/M | 6 | 0.95 % | | 6 | 0.88 % | | | 7 | C C D C C C / C | KD9YHP/M | 4 | 0.63 % | | 4 | 0.59 % | | | 8 | C D C C / C | K2AA/R | 3 | 0.48 % | | 4 | 0.59 % | | | 9 | C C D C C / C | KI5MM/M | 3 | 0.48 % | | 3 | 0.44 % | | | 10 | C C D C / C | KR4S/M | 3 | 0.48 % | | 3 | 0.44 % | | | 11 | C D C | K1E | 2 | 0.32 % | | 2 | 0.29 % | |
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