| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AA1K | 75 | 37.69 % | | 80 | 38.46 % | | 2 | C C D C C | DD0VS | 48 | 24.12 % | | 49 | 23.56 % | | 3 | C C D C C C | DL3NEY | 23 | 11.56 % | | 23 | 11.06 % | | 4 | C D C C | G3CO | 21 | 10.55 % | | 22 | 10.58 % | | 5 | C D C C C | F4DIA | 12 | 6.03 % | | 12 | 5.77 % | | 6 | C D C | G0W | 5 | 2.51 % | | 5 | 2.40 % | | 7 | D C D C | 9A1A | 4 | 2.01 % | | 5 | 2.40 % | | 8 | C D D C C | E78WW | 4 | 2.01 % | | 4 | 1.92 % | | 9 | C D D C | P33W | 3 | 1.51 % | | 3 | 1.44 % | | 10 | C C D / C C D C C | IS9/OK6RA | 1 | 0.50 % | | 1 | 0.48 % | | 11 | D C D C C | 9A1AA | 1 | 0.50 % | | 1 | 0.48 % | | 12 | C D D C C C | S52ZDK | 1 | 0.50 % | | 1 | 0.48 % | | 13 | C C D D D C | YR100R | 1 | 0.50 % | | 2 | 0.96 % | |
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