| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA4AK | 811 | 31.92 % | | 1192 | 32.52 % | | 2 | C C D C C C | AT5EPP | 641 | 25.23 % | | 874 | 23.85 % | | 3 | C C D C | AA3B | 555 | 21.84 % | | 886 | 24.17 % | | 4 | C D C C | D1AZ | 161 | 6.34 % | | 220 | 6.00 % | | 5 | C D C C C | D0JHN | 114 | 4.49 % | | 134 | 3.66 % | | 6 | C D D C | E70T | 51 | 2.01 % | | 88 | 2.40 % | | 7 | D C D C C | 3G3AA | 36 | 1.42 % | | 42 | 1.15 % | | 8 | C D D C C | A31MM | 35 | 1.38 % | | 47 | 1.28 % | | 9 | C D C | B1Z | 22 | 0.87 % | | 29 | 0.79 % | | 10 | D C D C | 4J5A | 18 | 0.71 % | | 27 | 0.74 % | | 11 | D C D C C C | 2E0CVN | 14 | 0.55 % | | 14 | 0.38 % | | 12 | C C D D C | OF10A | 7 | 0.28 % | | 8 | 0.22 % | | 13 | C C D D C C | HB80BS | 7 | 0.28 % | | 10 | 0.27 % | | 14 | C D D C C C | E21YDP | 6 | 0.24 % | | 10 | 0.27 % | | 15 | C C D D C C C | DL40MFR | 5 | 0.20 % | | 9 | 0.25 % | | 16 | C C D C C C / C | DG3LSM/P | 5 | 0.20 % | | 5 | 0.14 % | | 17 | C / C C D C C | F/OM2MA | 3 | 0.12 % | | 4 | 0.11 % | | 18 | C C D C C / D | BA1GN/8 | 3 | 0.12 % | | 3 | 0.08 % | | 19 | C C D C C C C | DF0WARC | 3 | 0.12 % | | 6 | 0.16 % | | 20 | C C / C C D C C | OZ/DJ5LA | 3 | 0.12 % | | 4 | 0.11 % | | 21 | C C D C / D | NA3M/4 | 2 | 0.08 % | | 2 | 0.05 % | | 22 | C C D D D C | PA125V | 2 | 0.08 % | | 4 | 0.11 % | | 23 | C C D C C / C | DJ0LJ/M | 2 | 0.08 % | | 2 | 0.05 % | | 24 | C D D D C C | R112MS | 2 | 0.08 % | | 2 | 0.05 % | | 25 | C C / C C D C | LA/LY5G | 2 | 0.08 % | | 3 | 0.08 % | | 26 | C C D / C D C C | CT9/R7KW | 2 | 0.08 % | | 4 | 0.11 % | | 27 | C C D / C C D C C C | SV5/HB9AOF | 2 | 0.08 % | | 3 | 0.08 % | | 28 | C C D C C C / D | JR1MEG/1 | 2 | 0.08 % | | 2 | 0.05 % | | 29 | C C D / C C D C C | EA5/DK5IM | 2 | 0.08 % | | 4 | 0.11 % | | 30 | C C D D D D C | DM1517L | 1 | 0.04 % | | 1 | 0.03 % | | 31 | C / C D C C C | F/G4BJM | 1 | 0.04 % | | 3 | 0.08 % | | 32 | D C D / C C D C C C | 5Z4/DL2RMC | 1 | 0.04 % | | 1 | 0.03 % | | 33 | D C / C D D C C | 9A/E77DX | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C C D D D C C | DL500ML | 1 | 0.04 % | | 1 | 0.03 % | | 35 | C D C C C / C | M0DSL/P | 1 | 0.04 % | | 1 | 0.03 % | | 36 | D C C D C | 8AH2R | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C D C C / C | F2YT/P | 1 | 0.04 % | | 1 | 0.03 % | | 38 | C C D C C / C C C | EA1GT/QRP | 1 | 0.04 % | | 2 | 0.05 % | | 39 | C C D C / C C D | AD8J/HR9 | 1 | 0.04 % | | 1 | 0.03 % | | 40 | C C / C D C C | EI/W5GN | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C C D D D C C C | PA150LIM | 1 | 0.04 % | | 1 | 0.03 % | | 42 | D C D C C C / D | 7K1MAG/2 | 1 | 0.04 % | | 1 | 0.03 % | | 43 | C D D D D C | R1606M | 1 | 0.04 % | | 2 | 0.05 % | | 44 | C D D D D C C | R2017CC | 1 | 0.04 % | | 1 | 0.03 % | | 45 | C D D D D C C C C C | S5100LIONS | 1 | 0.04 % | | 1 | 0.03 % | | 46 | C C / C C D C C C | SP/LZ1ABC | 1 | 0.04 % | | 1 | 0.03 % | | 47 | C C D C C C / C C C | SP6EIY/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 48 | C C D / C C D C C / C | SV2/SV1RP/A | 1 | 0.04 % | | 1 | 0.03 % | | 49 | C C D D D C C / D | OF100FI/3 | 1 | 0.04 % | | 1 | 0.03 % | | 50 | C C D D D C C C C | TM100AEGK | 1 | 0.04 % | | 1 | 0.03 % | | 51 | C C D D D D C C C | XM1150CAN | 1 | 0.04 % | | 1 | 0.03 % | | 52 | C C D C C / C C | YL3IZ/MM | 1 | 0.04 % | | 1 | 0.03 % | |
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