| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD7JNA | 1661 | 33.85 % | | 3448 | 28.99 % | | 2 | C C D C C | AA1SU | 1490 | 30.36 % | | 3865 | 32.49 % | | 3 | C C D C | AA3B | 631 | 12.86 % | | 2190 | 18.41 % | | 4 | C D C C C | D1CTT | 390 | 7.95 % | | 651 | 5.47 % | | 5 | C D C C | B1HQ | 363 | 7.40 % | | 854 | 7.18 % | | 6 | D C D C C | 3V8SS | 55 | 1.12 % | | 153 | 1.29 % | | 7 | C D D C C | A47HQ | 54 | 1.10 % | | 167 | 1.40 % | | 8 | D C D C C C | 2E0BFA | 40 | 0.82 % | | 55 | 0.46 % | | 9 | C D D C | E70A | 39 | 0.79 % | | 112 | 0.94 % | | 10 | C C D C C C / C | DL1RIO/P | 21 | 0.43 % | | 32 | 0.27 % | | 11 | C D C | C4W | 20 | 0.41 % | | 56 | 0.47 % | | 12 | D C D C | 3Z1K | 16 | 0.33 % | | 71 | 0.60 % | | 13 | C C D D C C C | CS25FOQ | 12 | 0.24 % | | 29 | 0.24 % | | 14 | C D D C C C | E20WUE | 10 | 0.20 % | | 22 | 0.18 % | | 15 | C C D D C C | GB50GT | 9 | 0.18 % | | 15 | 0.13 % | | 16 | C C D C C C / D | JA5QJX/0 | 7 | 0.14 % | | 11 | 0.09 % | | 17 | C C / C C D C C | ES/RA1AL | 7 | 0.14 % | | 9 | 0.08 % | | 18 | C C D C C / C | DH9DX/P | 7 | 0.14 % | | 9 | 0.08 % | | 19 | D C / C C D C C | 4O/ON5JE | 6 | 0.12 % | | 13 | 0.11 % | | 20 | C D C C C / C | F4GKR/P | 6 | 0.12 % | | 13 | 0.11 % | | 21 | C C D / C C D C C C | CT9/SP6GJC | 6 | 0.12 % | | 12 | 0.10 % | | 22 | C C D / C C D C C | EA5/RN3AM | 6 | 0.12 % | | 9 | 0.08 % | | 23 | C C / C C D C C C | CK/DL4ALB | 5 | 0.10 % | | 7 | 0.06 % | | 24 | C C D C C / C C C | DF7LA/QRP | 3 | 0.06 % | | 4 | 0.03 % | | 25 | D C / C D D C C | 9A/S51YF | 3 | 0.06 % | | 6 | 0.05 % | | 26 | C C D D C | OG55W | 3 | 0.06 % | | 13 | 0.11 % | | 27 | C C D / C D C C | EA5/R3AR | 2 | 0.04 % | | 6 | 0.05 % | | 28 | C C D / C C D C | HB0/PC5A | 2 | 0.04 % | | 5 | 0.04 % | | 29 | C C D C / D | UD9P/4 | 2 | 0.04 % | | 6 | 0.05 % | | 30 | C C D C C C / C C C | DK5OPA/QRP | 2 | 0.04 % | | 2 | 0.02 % | | 31 | C C D / C D C C C | EA5/G7NFK | 2 | 0.04 % | | 2 | 0.02 % | | 32 | C C D D D C C | GB100GP | 2 | 0.04 % | | 4 | 0.03 % | | 33 | C D C C / D | K3MD/1 | 2 | 0.04 % | | 3 | 0.03 % | | 34 | C C / C D C C | EW/R1AT | 2 | 0.04 % | | 4 | 0.03 % | | 35 | C / C C D C C C | I/OE1MSW | 2 | 0.04 % | | 3 | 0.03 % | | 36 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.02 % | | 3 | 0.03 % | | 37 | D C D C C / C | 4X1UF/M | 1 | 0.02 % | | 1 | 0.01 % | | 38 | D C D C C C / D | 7K1MAG/2 | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C C D C C C / C C | DL2ARH/MM | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C C D D D D C C C | DQ1200ASP | 1 | 0.02 % | | 1 | 0.01 % | | 41 | D C / C D D C | 9A/S51Z | 1 | 0.02 % | | 2 | 0.02 % | | 42 | C D C C / C | F4GK/P | 1 | 0.02 % | | 1 | 0.01 % | | 43 | D C D C C C / C | 9A5MPV/P | 1 | 0.02 % | | 1 | 0.01 % | | 44 | C D C C C / C C D | K0BBC/VY2 | 1 | 0.02 % | | 4 | 0.03 % | | 45 | C D C C / C C D | K2NV/VE3 | 1 | 0.02 % | | 1 | 0.01 % | | 46 | D C D C C C C | 8J3ICOM | 1 | 0.02 % | | 2 | 0.02 % | | 47 | C C / C C D C | MD/WJ2O | 1 | 0.02 % | | 2 | 0.02 % | | 48 | C / C C D C C / C | F/FK8IK/P | 1 | 0.02 % | | 1 | 0.01 % | | 49 | C C / C D C C C | OH/G1UZD | 1 | 0.02 % | | 1 | 0.01 % | | 50 | C C / C D D C | ON/Z35M | 1 | 0.02 % | | 3 | 0.03 % | | 51 | C C D D D C C C | PC100IAU | 1 | 0.02 % | | 2 | 0.02 % | | 52 | C C D C C / C C | RA0LQ/MM | 1 | 0.02 % | | 2 | 0.02 % | | 53 | C C D C C C C | TM1MOON | 1 | 0.02 % | | 4 | 0.03 % | | 54 | C C D / C C D C C C / C ' | HB9/DK3RED/P | 1 | 0.02 % | | 1 | 0.01 % | |
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