| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C D C C | K0AP | 231 | 52.86 % | | 375 | 55.39 % | | | 2 | C C D C | AD8J | 76 | 17.39 % | | 126 | 18.61 % | | | 3 | C D C C C | K0HUU | 64 | 14.65 % | | 89 | 13.15 % | | | 4 | C C D C C | AB1VL | 46 | 10.53 % | | 65 | 9.60 % | | | 5 | C C D C C C | KA1IOR | 18 | 4.12 % | | 20 | 2.95 % | | | 6 | C D C C / D | K9JF/7 | 1 | 0.23 % | | 1 | 0.15 % | | | 7 | C D C | W3C | 1 | 0.23 % | | 1 | 0.15 % | |
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