| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CE1UGE | 569 | 26.51 % | | 671 | 23.62 % | | 2 | C D C C C | F5LIW | 526 | 24.51 % | | 681 | 23.97 % | | 3 | C C D C | AA3B | 357 | 16.64 % | | 529 | 18.62 % | | 4 | C C D C C | AA0AW | 339 | 15.80 % | | 442 | 15.56 % | | 5 | C D C C | F2YT | 312 | 14.54 % | | 463 | 16.30 % | | 6 | C D D C | J42L | 9 | 0.42 % | | 12 | 0.42 % | | 7 | D C D C | 4M1K | 5 | 0.23 % | | 6 | 0.21 % | | 8 | C D D C C | S51YI | 5 | 0.23 % | | 9 | 0.32 % | | 9 | C D C | D4C | 4 | 0.19 % | | 7 | 0.25 % | | 10 | D C D C C | 4Z5UN | 3 | 0.14 % | | 3 | 0.11 % | | 11 | C C D D C | LY29A | 3 | 0.14 % | | 3 | 0.11 % | | 12 | D C D C C C | 7L1WII | 2 | 0.09 % | | 2 | 0.07 % | | 13 | C C D C C / D | AH2AV/4 | 2 | 0.09 % | | 2 | 0.07 % | | 14 | C C D D C C C | DM70GER | 2 | 0.09 % | | 2 | 0.07 % | | 15 | C D C C C / D | K9LOF/5 | 2 | 0.09 % | | 3 | 0.11 % | | 16 | C C D C C / C D | AH6FX/W4 | 1 | 0.05 % | | 1 | 0.04 % | | 17 | C C / C C D C C | LU/DL2OE | 1 | 0.05 % | | 1 | 0.04 % | | 18 | C D C C / D | K2ZR/4 | 1 | 0.05 % | | 1 | 0.04 % | | 19 | C C D C / D | NE8O/4 | 1 | 0.05 % | | 1 | 0.04 % | | 20 | C C D C C C C | KC3IPKV | 1 | 0.05 % | | 1 | 0.04 % | | 21 | C D C C C / C C D | W5MIL/HR9 | 1 | 0.05 % | | 1 | 0.04 % | |
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