| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0AI | 1204 | 23.96 % | | 1921 | 21.66 % | | 2 | C C D C C C | BI4KKC | 1032 | 20.53 % | | 1507 | 17.00 % | | 3 | C C D C | AA1K | 959 | 19.08 % | | 1987 | 22.41 % | | 4 | C D C C | D1DX | 959 | 19.08 % | | 2013 | 22.70 % | | 5 | C D C C C | C6AGU | 610 | 12.14 % | | 967 | 10.91 % | | 6 | C D D C C | A45XR | 50 | 0.99 % | | 75 | 0.85 % | | 7 | C D D C | A44A | 49 | 0.97 % | | 96 | 1.08 % | | 8 | D C D C C | 3E1FP | 40 | 0.80 % | | 71 | 0.80 % | | 9 | D C D C | 3B8M | 33 | 0.66 % | | 77 | 0.87 % | | 10 | C D C | C4W | 31 | 0.62 % | | 56 | 0.63 % | | 11 | D C D C C C | 2E0CVN | 10 | 0.20 % | | 18 | 0.20 % | | 12 | C C D / C C D C | EA5/RV2A | 6 | 0.12 % | | 12 | 0.14 % | | 13 | C C D / C C D C C | EA6/EI6DX | 4 | 0.08 % | | 4 | 0.05 % | | 14 | C C D C / D | AI0Y/9 | 3 | 0.06 % | | 3 | 0.03 % | | 15 | C C D / C C D C C C | EA8/DL2DXA | 3 | 0.06 % | | 8 | 0.09 % | | 16 | C D C C C / C | G7UHN/P | 2 | 0.04 % | | 2 | 0.02 % | | 17 | C C D D C C C | HB90AWS | 2 | 0.04 % | | 3 | 0.03 % | | 18 | C D D C C C | E73FDE | 2 | 0.04 % | | 4 | 0.05 % | | 19 | D C / C C D C C | 5B/RN3QO | 2 | 0.04 % | | 2 | 0.02 % | | 20 | C D C C / D | R8FF/8 | 2 | 0.04 % | | 4 | 0.05 % | | 21 | C C / C D C C C | FO/F6BCW | 2 | 0.04 % | | 3 | 0.03 % | | 22 | C C D D C C | LZ30OJ | 2 | 0.04 % | | 2 | 0.02 % | | 23 | C C D C C C / D | IK1GOF/2 | 2 | 0.04 % | | 3 | 0.03 % | | 24 | C C D D C | LX75V | 2 | 0.04 % | | 2 | 0.02 % | | 25 | D C D / C C D C C | 8R1/AG6UT | 1 | 0.02 % | | 2 | 0.02 % | | 26 | D C D D C | 4U25B | 1 | 0.02 % | | 4 | 0.05 % | | 27 | C C / C C D C C | FS/VA3DF | 1 | 0.02 % | | 2 | 0.02 % | | 28 | C C D C C C / C C C | IK1RAE/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 29 | C C D C C / C D | KH6ND/W7 | 1 | 0.02 % | | 3 | 0.03 % | | 30 | C C D C C C / C | HB9AFI/P | 1 | 0.02 % | | 1 | 0.01 % | | 31 | D C D D D C C C | 3Z100PIP | 1 | 0.02 % | | 4 | 0.05 % | | 32 | C C / C D C C | MW/R6AF | 1 | 0.02 % | | 3 | 0.03 % | | 33 | C C D / C D C C | PJ7/K0CD | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C C D / C D C C C | CT7/G4BJM | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C D C C / D | RZ9SZ/3 | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C C D C C / C | UX1HW/M | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C D / C C D C | V4/WX4G | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C D / C D D C C | W2/E78WW | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C C D C C / C C | YL3IZ/MM | 1 | 0.02 % | | 1 | 0.01 % | |
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