| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA5AZ | 46 | 23.96 % | | 46 | 23.71 % | | 2 | C C D C C C | CT1BXT | 40 | 20.83 % | | 40 | 20.62 % | | 3 | C C D C | AA1O | 36 | 18.75 % | | 36 | 18.56 % | | 4 | C D C C C | G8CMU | 31 | 16.15 % | | 31 | 15.98 % | | 5 | C D C C | K1XS | 27 | 14.06 % | | 28 | 14.43 % | | 6 | C D D C | P45A | 5 | 2.60 % | | 6 | 3.09 % | | 7 | C D C | C4A | 3 | 1.56 % | | 3 | 1.55 % | | 8 | D C D C | 5E5E | 2 | 1.04 % | | 2 | 1.03 % | | 9 | C D D D C | S560C | 1 | 0.52 % | | 1 | 0.52 % | | 10 | C D D C C | Z68BH | 1 | 0.52 % | | 1 | 0.52 % | |
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