| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
|---|
| 1 | C C D C C | DK9NI | 45 | 38.46 % | | 53 | 36.05 % | | | 2 | C C D C | HG7T | 25 | 21.37 % | | 32 | 21.77 % | | | 3 | C C D C C C | DH2URF | 20 | 17.09 % | | 24 | 16.33 % | | | 4 | C D C C | F5IN | 13 | 11.11 % | | 16 | 10.88 % | | | 5 | C D C C C | F6HKA | 8 | 6.84 % | | 10 | 6.80 % | | | 6 | C D D C C | J28NC | 2 | 1.71 % | | 5 | 3.40 % | | | 7 | D C / C C D C C | 5B/RN3QO | 1 | 0.85 % | | 3 | 2.04 % | | | 8 | D C D C C | 6Y5WJ | 1 | 0.85 % | | 1 | 0.68 % | | | 9 | C D C | M3I | 1 | 0.85 % | | 2 | 1.36 % | | | 10 | C D D C | Z35G | 1 | 0.85 % | | 1 | 0.68 % | |
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