| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD1IIJ | 1531 | 29.46 % | | 2224 | 25.23 % | | 2 | C C D C C | AA0AI | 1328 | 25.55 % | | 2142 | 24.30 % | | 3 | C C D C | AA1K | 872 | 16.78 % | | 1814 | 20.58 % | | 4 | C D C C | D1DX | 703 | 13.53 % | | 1389 | 15.76 % | | 5 | C D C C C | C5BDF | 459 | 8.83 % | | 702 | 7.96 % | | 6 | D C D C C | 3B8DB | 53 | 1.02 % | | 104 | 1.18 % | | 7 | C D D C | A44A | 53 | 1.02 % | | 111 | 1.26 % | | 8 | C D D C C | A45XR | 52 | 1.00 % | | 84 | 0.95 % | | 9 | D C D C | 3B8M | 37 | 0.71 % | | 81 | 0.92 % | | 10 | C D C | B4T | 30 | 0.58 % | | 56 | 0.64 % | | 11 | D C D C C C | 2E0CEA | 20 | 0.38 % | | 25 | 0.28 % | | 12 | C C D / C C D C C C | DU1/HB9BAJ | 6 | 0.12 % | | 7 | 0.08 % | | 13 | C C D C C C / D | IK1ZOF/3 | 6 | 0.12 % | | 11 | 0.12 % | | 14 | C C D / C C D C C | DV8/KH7EA | 5 | 0.10 % | | 6 | 0.07 % | | 15 | C D D C C C | E20HHK | 5 | 0.10 % | | 9 | 0.10 % | | 16 | C C D / C C D C | EA5/RV2A | 4 | 0.08 % | | 4 | 0.05 % | | 17 | C C D D C C | LZ30OJ | 3 | 0.06 % | | 5 | 0.06 % | | 18 | C D C C C / C | F4HYJ/P | 3 | 0.06 % | | 3 | 0.03 % | | 19 | D C / C C D C C | 5B/RN3QO | 2 | 0.04 % | | 3 | 0.03 % | | 20 | C C D C C / C C C | HZ1TT/QRP | 2 | 0.04 % | | 4 | 0.05 % | | 21 | C C D D C C C | DL50IFM | 2 | 0.04 % | | 2 | 0.02 % | | 22 | C D C C / D | R8FF/8 | 2 | 0.04 % | | 3 | 0.03 % | | 23 | D C D D C | 4U25B | 1 | 0.02 % | | 3 | 0.03 % | | 24 | D C / C D C C | 4X/R3HD | 1 | 0.02 % | | 1 | 0.01 % | | 25 | C C D D D D C C C | DQ1200ASP | 1 | 0.02 % | | 1 | 0.01 % | | 26 | C C D / C D C C C | CT7/G4BJM | 1 | 0.02 % | | 1 | 0.01 % | | 27 | C D C C C / C C | F5MYK/MM | 1 | 0.02 % | | 1 | 0.01 % | | 28 | C C / C C D C C | FS/VA3DF | 1 | 0.02 % | | 2 | 0.02 % | | 29 | D C D D D C C C | 3Z100PIP | 1 | 0.02 % | | 4 | 0.05 % | | 30 | C C D C C C / C C C | IK1RAE/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 31 | C C D C C / C D | KH6ND/W7 | 1 | 0.02 % | | 1 | 0.01 % | | 32 | C C D C C C / C C | IU1DUB/MM | 1 | 0.02 % | | 1 | 0.01 % | | 33 | C C D C C D C C D C | EA7EA7IO6A | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C C / C D C C | MW/R6AF | 1 | 0.02 % | | 2 | 0.02 % | | 35 | C C D C / C D | NH6T/W4 | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C C / C D C C C | OH/M0CFW | 1 | 0.02 % | | 2 | 0.02 % | | 37 | C C D D C | LX75V | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C C D C / D | RV7B/9 | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C C D C C / D | RZ9SZ/3 | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C D / C C D C | V4/WX4G | 1 | 0.02 % | | 1 | 0.01 % | | 41 | C D / C D D C C | W2/E78WW | 1 | 0.02 % | | 1 | 0.01 % | |
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