| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT1BWU | 68 | 42.24 % | | 70 | 41.92 % | | 2 | C C D C C | AC4SJ | 52 | 32.30 % | | 53 | 31.74 % | | 3 | C D C C C | F4GTB | 14 | 8.70 % | | 16 | 9.58 % | | 4 | C C D C | EA5D | 9 | 5.59 % | | 9 | 5.39 % | | 5 | C D C C | D1DX | 7 | 4.35 % | | 7 | 4.19 % | | 6 | C D D C C | J69DS | 2 | 1.24 % | | 3 | 1.80 % | | 7 | D C D C C C | 2E0CVN | 2 | 1.24 % | | 2 | 1.20 % | | 8 | D C D C C | 4Z4DX | 1 | 0.62 % | | 1 | 0.60 % | | 9 | D C D C C C / C | 9A7PLS/P | 1 | 0.62 % | | 1 | 0.60 % | | 10 | C D D C | A62A | 1 | 0.62 % | | 1 | 0.60 % | | 11 | C C D D C C C | GB80BOB | 1 | 0.62 % | | 1 | 0.60 % | | 12 | C C D D D C C C | EN100UWB | 1 | 0.62 % | | 1 | 0.60 % | | 13 | C C D / C C D C C C | SM6/DL1HTW | 1 | 0.62 % | | 1 | 0.60 % | | 14 | C C D D D D C C | SN1920PS | 1 | 0.62 % | | 1 | 0.60 % | |
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