| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AA1K | 270 | 28.57 % | | 353 | 29.03 % | | 2 | C C D C C | AA2HJ | 229 | 24.23 % | | 290 | 23.85 % | | 3 | C D C C | E7DX | 172 | 18.20 % | | 249 | 20.48 % | | 4 | C C D C C C | BD1IIJ | 158 | 16.72 % | | 181 | 14.88 % | | 5 | C D C C C | C6AGU | 57 | 6.03 % | | 65 | 5.35 % | | 6 | C D D C | A44A | 13 | 1.38 % | | 14 | 1.15 % | | 7 | D C D C | 4E1A | 12 | 1.27 % | | 15 | 1.23 % | | 8 | C D D C C | E27AZ | 10 | 1.06 % | | 14 | 1.15 % | | 9 | D C D C C | 4F3OM | 8 | 0.85 % | | 14 | 1.15 % | | 10 | C D C | B4T | 5 | 0.53 % | | 8 | 0.66 % | | 11 | D C D C C C | 5B4AOF | 4 | 0.42 % | | 4 | 0.33 % | | 12 | C D D C C C | E20HHK | 1 | 0.11 % | | 2 | 0.16 % | | 13 | C / C C D C | F/IR7A | 1 | 0.11 % | | 1 | 0.08 % | | 14 | C C D C C C / D | JA3GZE/1 | 1 | 0.11 % | | 1 | 0.08 % | | 15 | C D C C / D | K0XB/6 | 1 | 0.11 % | | 1 | 0.08 % | | 16 | C C D / C C D C | KH0/KC0W | 1 | 0.11 % | | 2 | 0.16 % | | 17 | C C D C / D | RV7B/9 | 1 | 0.11 % | | 1 | 0.08 % | | 18 | C D / C C D C | V4/WX4M | 1 | 0.11 % | | 1 | 0.08 % | |
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