| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AA1N | 253 | 41.07 % | | 307 | 43.79 % | | 2 | C C D C C | AA1SU | 128 | 20.78 % | | 136 | 19.40 % | | 3 | C C D C C C | CA2FHD | 104 | 16.88 % | | 108 | 15.41 % | | 4 | C D C C C | F4AIF | 65 | 10.55 % | | 68 | 9.70 % | | 5 | C D C C | D4DX | 29 | 4.71 % | | 34 | 4.85 % | | 6 | C D D C | C37N | 10 | 1.62 % | | 14 | 2.00 % | | 7 | D C D C | 3G2N | 7 | 1.14 % | | 9 | 1.28 % | | 8 | C D D C C | S51DX | 6 | 0.97 % | | 6 | 0.86 % | | 9 | D C D C C | 4U1WB | 3 | 0.49 % | | 4 | 0.57 % | | 10 | C D C | G8X | 2 | 0.32 % | | 4 | 0.57 % | | 11 | D C D D D C | 9A925T | 1 | 0.16 % | | 1 | 0.14 % | | 12 | C C D C C C / D | IZ5TJD/7 | 1 | 0.16 % | | 1 | 0.14 % | | 13 | C C D C C C / C | KM6MJC/P | 1 | 0.16 % | | 1 | 0.14 % | | 14 | C C D D D C C C | OL730PLZ | 1 | 0.16 % | | 2 | 0.29 % | | 15 | D C D D C | 9A73A | 1 | 0.16 % | | 2 | 0.29 % | | 16 | C C D / C C D C C | TI5/VA3RA | 1 | 0.16 % | | 1 | 0.14 % | | 17 | C C D / C D C C | TI8/N7ZG | 1 | 0.16 % | | 1 | 0.14 % | | 18 | C C D D C | TM18Z | 1 | 0.16 % | | 1 | 0.14 % | | 19 | C D / C D C C C | W2/G6CBR | 1 | 0.16 % | | 1 | 0.14 % | |
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