| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD0AAI | 715 | 31.51 % | | 998 | 31.05 % | | 2 | C C D C C | AC2QH | 697 | 30.72 % | | 1043 | 32.45 % | | 3 | C C D C | AA3I | 278 | 12.25 % | | 424 | 13.19 % | | 4 | C D C C C | F1AUF | 244 | 10.75 % | | 311 | 9.68 % | | 5 | C D C C | E7DX | 132 | 5.82 % | | 166 | 5.16 % | | 6 | D C D C C | 2E0WV | 31 | 1.37 % | | 38 | 1.18 % | | 7 | C D D C C | A41CK | 30 | 1.32 % | | 44 | 1.37 % | | 8 | C D D C | E73B | 26 | 1.15 % | | 37 | 1.15 % | | 9 | D C D C | 3Z0X | 12 | 0.53 % | | 17 | 0.53 % | | 10 | D C D C C C | 2E0BJL | 10 | 0.44 % | | 11 | 0.34 % | | 11 | C D C | G1M | 9 | 0.40 % | | 11 | 0.34 % | | 12 | C C D C C C / C C C | DL1NCH/QRP | 9 | 0.40 % | | 10 | 0.31 % | | 13 | C C D D C C C | DR19SID | 8 | 0.35 % | | 10 | 0.31 % | | 14 | C C D D C | AM70A | 8 | 0.35 % | | 9 | 0.28 % | | 15 | C C D C C C / C | DL2LRT/P | 7 | 0.31 % | | 7 | 0.22 % | | 16 | C C D D C C | HA01FF | 6 | 0.26 % | | 9 | 0.28 % | | 17 | C C D C C / D | IQ2XZ/8 | 4 | 0.18 % | | 4 | 0.12 % | | 18 | C C D / C C D C C C | EA5/LA7AFA | 4 | 0.18 % | | 4 | 0.12 % | | 19 | C D D C C C | E71EXA | 4 | 0.18 % | | 4 | 0.12 % | | 20 | C C D C C / C C C | DL7MB/QRP | 3 | 0.13 % | | 5 | 0.16 % | | 21 | C C / C C D C C | LX/DJ3XD | 3 | 0.13 % | | 6 | 0.19 % | | 22 | C C D C C / C | DH2MS/P | 3 | 0.13 % | | 4 | 0.12 % | | 23 | C D C C C / C C C | M0VRW/QRP | 2 | 0.09 % | | 4 | 0.12 % | | 24 | C C D D D C C C | DQ600UNI | 2 | 0.09 % | | 3 | 0.09 % | | 25 | C C / C D C C | EW/R1AT | 2 | 0.09 % | | 6 | 0.19 % | | 26 | C C D D C C C C | DL70AFUG | 2 | 0.09 % | | 3 | 0.09 % | | 27 | D C D D C C C C | 4Z64EURO | 1 | 0.04 % | | 1 | 0.03 % | | 28 | D C D C C C / C | 9A5MPV/P | 1 | 0.04 % | | 1 | 0.03 % | | 29 | C D C C C / C | F8BJK/P | 1 | 0.04 % | | 1 | 0.03 % | | 30 | D C D D C | 4U73B | 1 | 0.04 % | | 1 | 0.03 % | | 31 | C C D / C D C C | EA5/R3AR | 1 | 0.04 % | | 1 | 0.03 % | | 32 | C C D D C C C / D | AM70URE/9 | 1 | 0.04 % | | 1 | 0.03 % | | 33 | C C D / C D C C C | CT7/F6HBR | 1 | 0.04 % | | 4 | 0.12 % | | 34 | C C D D D C C | LZ497OM | 1 | 0.04 % | | 4 | 0.12 % | | 35 | C / C C D C | M/WU5M | 1 | 0.04 % | | 1 | 0.03 % | | 36 | C C / D C D C C | DL/9A2QP | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C C / C D D C | ON/Z35M | 1 | 0.04 % | | 2 | 0.06 % | | 38 | C D C C C C | R2RFAV | 1 | 0.04 % | | 1 | 0.03 % | | 39 | C D C C / C | R2ZA/M | 1 | 0.04 % | | 1 | 0.03 % | | 40 | C C D C / D | RT9T/3 | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C C D / C C D C C | SM7/DL6UM | 1 | 0.04 % | | 2 | 0.06 % | | 42 | C C / C D C C C | SP/I4ZSQ | 1 | 0.04 % | | 1 | 0.03 % | | 43 | C C / C C D C / C | SV/SP1C/P | 1 | 0.04 % | | 1 | 0.03 % | | 44 | C D C C / D | W1YY/7 | 1 | 0.04 % | | 1 | 0.03 % | |
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