| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA4AK | 826 | 30.95 % | | 1366 | 31.24 % | | 2 | C C D C C C | AN1WHS | 657 | 24.62 % | | 983 | 22.48 % | | 3 | C C D C | AA3B | 602 | 22.56 % | | 1127 | 25.77 % | | 4 | C D C C | D1DX | 184 | 6.89 % | | 277 | 6.33 % | | 5 | C D C C C | F1AKK | 137 | 5.13 % | | 173 | 3.96 % | | 6 | C D D C | E72A | 52 | 1.95 % | | 99 | 2.26 % | | 7 | D C D C C | 4O3RB | 41 | 1.54 % | | 70 | 1.60 % | | 8 | C D D C C | A45XR | 39 | 1.46 % | | 69 | 1.58 % | | 9 | C D C | B4T | 27 | 1.01 % | | 45 | 1.03 % | | 10 | D C D C | 3E3E | 21 | 0.79 % | | 38 | 0.87 % | | 11 | D C D C C C | 2E0CVN | 12 | 0.45 % | | 13 | 0.30 % | | 12 | C C D D C C C | AM70URE | 10 | 0.37 % | | 16 | 0.37 % | | 13 | C C D D C | AM70C | 7 | 0.26 % | | 10 | 0.23 % | | 14 | C C D D C C | HA01FF | 6 | 0.22 % | | 10 | 0.23 % | | 15 | C C D C C / D | BG9XD/7 | 5 | 0.19 % | | 5 | 0.11 % | | 16 | C C D C C C / C C C | EA7AAW/QRP | 3 | 0.11 % | | 4 | 0.09 % | | 17 | C C D D D C C | DM460DA | 3 | 0.11 % | | 4 | 0.09 % | | 18 | C C D C C C / D | JA5QJX/0 | 3 | 0.11 % | | 3 | 0.07 % | | 19 | C C D / C C D C C C | EA5/PA3GCU | 3 | 0.11 % | | 5 | 0.11 % | | 20 | C C D C C C / C | DL7USW/P | 2 | 0.07 % | | 2 | 0.05 % | | 21 | C C D D C C C C | DL70AFUG | 2 | 0.07 % | | 3 | 0.07 % | | 22 | C C D / C D C C C | CT7/F6HBR | 2 | 0.07 % | | 2 | 0.05 % | | 23 | D C / C C D C C | 4O/YU4YY | 2 | 0.07 % | | 3 | 0.07 % | | 24 | C C / C C D C C C | LX/GM0OBX | 2 | 0.07 % | | 2 | 0.05 % | | 25 | C C D C C / C C | RA0LQ/MM | 2 | 0.07 % | | 4 | 0.09 % | | 26 | C D C C / D | R2ET/9 | 2 | 0.07 % | | 2 | 0.05 % | | 27 | C C / C C D C C | OZ/DJ5LA | 2 | 0.07 % | | 6 | 0.14 % | | 28 | C C D / C D C C | EA5/R3AR | 1 | 0.04 % | | 3 | 0.07 % | | 29 | C C / C C D C | DL/AG7N | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C / C C D C / C | MJ/OQ7A/P | 1 | 0.04 % | | 2 | 0.05 % | | 31 | C C D D D C | LM450C | 1 | 0.04 % | | 3 | 0.07 % | | 32 | C C / C D D C | ON/Z35M | 1 | 0.04 % | | 2 | 0.05 % | | 33 | C C D D D D C | OH3077F | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C C D D D C C C | LY800SMG | 1 | 0.04 % | | 4 | 0.09 % | | 35 | D C D D C | 4U73B | 1 | 0.04 % | | 1 | 0.02 % | | 36 | C D / C D C C C | S5/G4BJM | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C D D D C | S573G | 1 | 0.04 % | | 2 | 0.05 % | | 38 | C D D C C C | S59ABC | 1 | 0.04 % | | 3 | 0.07 % | | 39 | C C D / C C D C C | SM0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C C D C C C / C C | UW5EJX/MM | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 5 | 0.11 % | | 42 | C C D C / D | ZR2A/4 | 1 | 0.04 % | | 2 | 0.05 % | |
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