| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AA3B | 232 | 33.00 % | | 232 | 32.95 % | | 2 | C C D C C | AA0AW | 162 | 23.04 % | | 162 | 23.01 % | | 3 | C C D C C C | BG0DLA | 109 | 15.50 % | | 109 | 15.48 % | | 4 | C D C C | K0AD | 89 | 12.66 % | | 89 | 12.64 % | | 5 | C D C C C | F1FPL | 60 | 8.53 % | | 60 | 8.52 % | | 6 | C D C | E2M | 14 | 1.99 % | | 14 | 1.99 % | | 7 | D C D C | 4A5E | 10 | 1.42 % | | 10 | 1.42 % | | 8 | C D D C | C37N | 7 | 1.00 % | | 7 | 0.99 % | | 9 | C D D C C | E77EA | 4 | 0.57 % | | 4 | 0.57 % | | 10 | D C D C C | 4U1WB | 3 | 0.43 % | | 3 | 0.43 % | | 11 | D C D C C C | 2E0CEY | 3 | 0.43 % | | 3 | 0.43 % | | 12 | C C D D C | OG66X | 2 | 0.28 % | | 2 | 0.28 % | | 13 | C C D / C C D C C | EA7/VE3NZ | 1 | 0.14 % | | 1 | 0.14 % | | 14 | D C D D D C | 9A925T | 1 | 0.14 % | | 1 | 0.14 % | | 15 | C C D / C C D C C C | IV3/HB9CAT | 1 | 0.14 % | | 1 | 0.14 % | | 16 | C C D C C / C C C | EA1GT/QRP | 1 | 0.14 % | | 1 | 0.14 % | | 17 | C C D D D C C | OG100AA | 1 | 0.14 % | | 1 | 0.14 % | | 18 | C C D D D D C | DL2025S | 1 | 0.14 % | | 1 | 0.14 % | | 19 | C C D D C C C | OH73ELK | 1 | 0.14 % | | 1 | 0.14 % | | 20 | C C D / C D C C C | ZP6/N3BNA | 1 | 0.14 % | | 1 | 0.14 % | |
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