| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C C | K0ARY | 462 | 25.62 % | | 464 | 25.68 % | | | 2 | C D C C | K0AD | 456 | 25.29 % | | 457 | 25.29 % | | | 3 | C C D C C C | KA0LDG | 391 | 21.69 % | | 392 | 21.69 % | | | 4 | C C D C C | AA0AI | 247 | 13.70 % | | 247 | 13.67 % | | | 5 | C C D C | AA0Z | 236 | 13.09 % | | 236 | 13.06 % | | | 6 | C D C C C / C | K1KVA/M | 2 | 0.11 % | | 2 | 0.11 % | | | 7 | C C D C C / C D | KH6XX/W0 | 2 | 0.11 % | | 2 | 0.11 % | | | 8 | C C D C C C C | KA1IAOR | 1 | 0.06 % | | 1 | 0.06 % | | | 9 | C D D C C | N11DD | 1 | 0.06 % | | 1 | 0.06 % | | | 10 | C C C D C | NBZ6G | 1 | 0.06 % | | 1 | 0.06 % | | | 11 | C C D C / D | NE8O/4 | 1 | 0.06 % | | 1 | 0.06 % | | | 12 | C C C D | ODW4 | 1 | 0.06 % | | 1 | 0.06 % | | | 13 | C D / C C D C C | W1/PY1MX | 1 | 0.06 % | | 1 | 0.06 % | | | 14 | C D C C C / D | W2IOC/1 | 1 | 0.06 % | | 1 | 0.06 % | |
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