| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C | AF1T | 49 | 35.77 % | | 49 | 35.77 % | | | 2 | C C D C C | CN8PA | 27 | 19.71 % | | 27 | 19.71 % | | | 3 | C D C C | E7CW | 26 | 18.98 % | | 26 | 18.98 % | | | 4 | C C D C C C | IG9ITO | 22 | 16.06 % | | 22 | 16.06 % | | | 5 | D C D C C | 4X6TT | 5 | 3.65 % | | 5 | 3.65 % | | | 6 | C D C C C | K2DRH | 4 | 2.92 % | | 4 | 2.92 % | | | 7 | D C D C C C | 7X2VFK | 1 | 0.73 % | | 1 | 0.73 % | | | 8 | C D D C | E72U | 1 | 0.73 % | | 1 | 0.73 % | | | 9 | D C D C | 4M5A | 1 | 0.73 % | | 1 | 0.73 % | | | 10 | C D C | D4M | 1 | 0.73 % | | 1 | 0.73 % | |
|