| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AC1U | 183 | 49.59 % | | 183 | 49.59 % | | 2 | C C D C C | AA2MU | 82 | 22.22 % | | 82 | 22.22 % | | 3 | C C D C C C | BA7IWR | 39 | 10.57 % | | 39 | 10.57 % | | 4 | C D C C | D4DX | 26 | 7.05 % | | 26 | 7.05 % | | 5 | C D D C | E70Y | 12 | 3.25 % | | 12 | 3.25 % | | 6 | C D C C C | F4AIF | 7 | 1.90 % | | 7 | 1.90 % | | 7 | D C D C C | 4X1VF | 4 | 1.08 % | | 4 | 1.08 % | | 8 | D C D C | 4X7R | 4 | 1.08 % | | 4 | 1.08 % | | 9 | C D C | B4T | 4 | 1.08 % | | 4 | 1.08 % | | 10 | C D D C C | D44FF | 2 | 0.54 % | | 2 | 0.54 % | | 11 | C C D / C C D C C | CT7/VA3FH | 1 | 0.27 % | | 1 | 0.27 % | | 12 | C C D / C D C C C | EA6/F4FFH | 1 | 0.27 % | | 1 | 0.27 % | | 13 | D C D D C | 9A73A | 1 | 0.27 % | | 1 | 0.27 % | | 14 | C C D C C C / D | KB1EFS/2 | 1 | 0.27 % | | 1 | 0.27 % | | 15 | C C D D C C | OF60AP | 1 | 0.27 % | | 1 | 0.27 % | | 16 | C C D C / C C | RD1A/MM | 1 | 0.27 % | | 1 | 0.27 % | |
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