| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BG0BBB | 1356 | 49.40 % | | 1786 | 50.44 % | | 2 | C C D C C | AA5GC | 703 | 25.61 % | | 892 | 25.19 % | | 3 | C D C C C | D0WFF | 300 | 10.93 % | | 359 | 10.14 % | | 4 | C C D C | AA4V | 100 | 3.64 % | | 137 | 3.87 % | | 5 | C D C C | F2JD | 92 | 3.35 % | | 118 | 3.33 % | | 6 | D C D C C C | 2E0AKA | 37 | 1.35 % | | 47 | 1.33 % | | 7 | D C D C C | 4K6OF | 25 | 0.91 % | | 30 | 0.85 % | | 8 | C D D C C | A45XR | 16 | 0.58 % | | 20 | 0.56 % | | 9 | C C D D C C | EO35IZ | 12 | 0.44 % | | 24 | 0.68 % | | 10 | C C D D D C C C | CQ750RSI | 8 | 0.29 % | | 11 | 0.31 % | | 11 | C D D C C C | E22UYH | 7 | 0.26 % | | 12 | 0.34 % | | 12 | C C D D C C C C | DL21EURO | 6 | 0.22 % | | 16 | 0.45 % | | 13 | C C D C C C / C | EA5IIG/P | 6 | 0.22 % | | 6 | 0.17 % | | 14 | C C D C C / D | HC7AE/1 | 6 | 0.22 % | | 7 | 0.20 % | | 15 | C C D C C C / C C C | DL1FCU/QRP | 5 | 0.18 % | | 5 | 0.14 % | | 16 | D C D C | 3Z8Z | 5 | 0.18 % | | 5 | 0.14 % | | 17 | C D D C | E70E | 4 | 0.15 % | | 7 | 0.20 % | | 18 | C C C C C C | ISOEUA | 4 | 0.15 % | | 4 | 0.11 % | | 19 | C C D D C C C | HF55BRP | 3 | 0.11 % | | 3 | 0.08 % | | 20 | C C D C C / C | DH7WW/P | 3 | 0.11 % | | 3 | 0.08 % | | 21 | C D C C C / C | F4FCE/P | 3 | 0.11 % | | 3 | 0.08 % | | 22 | C C D / C C D C C | CT7/DJ4EL | 3 | 0.11 % | | 3 | 0.08 % | | 23 | C C D D D C | HA230O | 3 | 0.11 % | | 4 | 0.11 % | | 24 | C D C C / D | R2AP/6 | 3 | 0.11 % | | 3 | 0.08 % | | 25 | D C D D C C | 4Z73SL | 2 | 0.07 % | | 2 | 0.06 % | | 26 | C C D C C / C C C | EU2MM/QRP | 2 | 0.07 % | | 2 | 0.06 % | | 27 | C C D D D C C | SD400SU | 2 | 0.07 % | | 2 | 0.06 % | | 28 | C D D C C C C | A91WARD | 2 | 0.07 % | | 2 | 0.06 % | | 29 | C D C C C / C C C | F4FHM/QRP | 2 | 0.07 % | | 2 | 0.06 % | | 30 | C C D D D D C C | LZ1612EN | 2 | 0.07 % | | 3 | 0.08 % | | 31 | C D C | R6A | 2 | 0.07 % | | 2 | 0.06 % | | 32 | C C C C C | IOKHY | 2 | 0.07 % | | 2 | 0.06 % | | 33 | C D C C C / D | R3UCJ/3 | 2 | 0.07 % | | 2 | 0.06 % | | 34 | C D D D D C C | R1994RU | 2 | 0.07 % | | 2 | 0.06 % | | 35 | C D / C C D C C C | I8/IT9AQR | 1 | 0.04 % | | 1 | 0.03 % | | 36 | D C D C C C C | 3Z0WARD | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C C D C C C / C C D | IU2DJK/IS0 | 1 | 0.04 % | | 1 | 0.03 % | | 38 | C C D C C C C | LX5WARD | 1 | 0.04 % | | 1 | 0.03 % | | 39 | C C D D C C C C C | DB59FIRAC | 1 | 0.04 % | | 1 | 0.03 % | | 40 | C / C C D C C C | M/YO4HGX | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C C D D D C C C C | OH100SRAL | 1 | 0.04 % | | 1 | 0.03 % | | 42 | D C D C C C C / D | 5P0WARD/1 | 1 | 0.04 % | | 1 | 0.03 % | | 43 | C C D C D D | DR7T26 | 1 | 0.04 % | | 1 | 0.03 % | | 44 | C D C C / C | R2EA/P | 1 | 0.04 % | | 1 | 0.03 % | | 45 | C D / C C D C C | I0/YO9XC | 1 | 0.04 % | | 1 | 0.03 % | | 46 | C D D C C / C C C | E78CB/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 47 | C C D / C D C C C | EA5/G4NRO | 1 | 0.04 % | | 1 | 0.03 % | | 48 | C C / C C D C C C / C | SP/DL1ZAL/P | 1 | 0.04 % | | 1 | 0.03 % | | 49 | C C D C C C C C | SQ0MORSE | 1 | 0.04 % | | 1 | 0.03 % | |
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