| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C C | KA4ZZZ | 131 | 36.19 % | | 131 | 31.72 % | | | 2 | C D C C C | K0FTR | 117 | 32.32 % | | 117 | 28.33 % | | | 3 | C C D C C | AA0AW | 51 | 14.09 % | | 51 | 12.35 % | | | 4 | C D C C | K0YY | 29 | 8.01 % | | 29 | 7.02 % | | | 5 | C C D C | AB1W | 27 | 7.46 % | | 27 | 6.54 % | | | 6 | C D C C C / C | K5ZZR/M | 3 | 0.83 % | | 3 | 0.73 % | | | 7 | C D C C / C | K2AA/R | 1 | 0.28 % | | 1 | 0.24 % | | | 8 | C C D C C / C | KI5MM/M | 1 | 0.28 % | | 1 | 0.24 % | | | 9 | C D C | N5T | 1 | 0.28 % | | 1 | 0.24 % | | | 10 | C C D C C C / C | WB0TEV/M | 1 | 0.28 % | | 1 | 0.24 % | |
|