| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C | AB3CX | 343 | 33.33 % | | 343 | 32.57 % | | | 2 | C C D C | AA1K | 250 | 24.30 % | | 250 | 23.74 % | | | 3 | C C D C C C | DA0BCC | 250 | 24.30 % | | 250 | 23.74 % | | | 4 | C D C C C | F4FFZ | 54 | 5.25 % | | 54 | 5.13 % | | | 5 | C D C C | E7CW | 40 | 3.89 % | | 40 | 3.80 % | | | 6 | C D D C | E71A | 28 | 2.72 % | | 28 | 2.66 % | | | 7 | C D D C C | E74SL | 20 | 1.94 % | | 20 | 1.90 % | | | 8 | D C D C | 3Z0X | 16 | 1.55 % | | 16 | 1.52 % | | | 9 | C D C | C4W | 12 | 1.17 % | | 12 | 1.14 % | | | 10 | D C D C C | 3V8SF | 6 | 0.58 % | | 6 | 0.57 % | | | 11 | D C D C C C | 2E0OBO | 3 | 0.29 % | | 3 | 0.28 % | | | 12 | C D / C D D C | E7/Z35M | 1 | 0.10 % | | 1 | 0.09 % | | | 13 | C C D / C C D C | EA5/RV2A | 1 | 0.10 % | | 1 | 0.09 % | | | 14 | D C D C C / C C C | 9A4DC/QRP | 1 | 0.10 % | | 1 | 0.09 % | | | 15 | C C D D C C C | HA50KKC | 1 | 0.10 % | | 1 | 0.09 % | | | 16 | C C D C / C | OT5Q/A | 1 | 0.10 % | | 1 | 0.09 % | | | 17 | C D D D C C C C | S520SAFE | 1 | 0.10 % | | 1 | 0.09 % | | | 18 | C D D C C C | S57NAW | 1 | 0.10 % | | 1 | 0.09 % | |
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