| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | AP2MKS | 1197 | 45.91 % | | 1577 | 45.41 % | | 2 | C C D C C | AA5AT | 693 | 26.58 % | | 969 | 27.90 % | | 3 | C D C C C | F1ADG | 304 | 11.66 % | | 393 | 11.32 % | | 4 | C C D C | AA3B | 128 | 4.91 % | | 181 | 5.21 % | | 5 | C D C C | F2VX | 94 | 3.61 % | | 108 | 3.11 % | | 6 | D C D C C | 4O3RB | 29 | 1.11 % | | 49 | 1.41 % | | 7 | D C D C C C | 2E0APZ | 27 | 1.04 % | | 31 | 0.89 % | | 8 | C D D C C | A41ZZ | 19 | 0.73 % | | 24 | 0.69 % | | 9 | C C D C C C / C | DL1VVQ/P | 11 | 0.42 % | | 15 | 0.43 % | | 10 | C D C C C / C | F4BAL/P | 8 | 0.31 % | | 9 | 0.26 % | | 11 | C C D D C C C | DL70TRS | 6 | 0.23 % | | 8 | 0.23 % | | 12 | C C D C C C / C C C | HB9BQP/QRP | 6 | 0.23 % | | 7 | 0.20 % | | 13 | C D D C C C | E20WXA | 6 | 0.23 % | | 8 | 0.23 % | | 14 | C C D C C C C | II3FTDM | 5 | 0.19 % | | 7 | 0.20 % | | 15 | D C D C | 3W3B | 5 | 0.19 % | | 7 | 0.20 % | | 16 | C C D D C | EM30L | 5 | 0.19 % | | 5 | 0.14 % | | 17 | C C D C C C / D | IK4RQJ/1 | 5 | 0.19 % | | 5 | 0.14 % | | 18 | C C D C C / D | AD6HF/8 | 5 | 0.19 % | | 6 | 0.17 % | | 19 | C C D C C / C | HA1TV/P | 5 | 0.19 % | | 6 | 0.17 % | | 20 | C C / C C D C C | OZ/DB5ZP | 4 | 0.15 % | | 4 | 0.12 % | | 21 | C D D C | E77O | 3 | 0.12 % | | 5 | 0.14 % | | 22 | C D / C C D C C C | B3/BG4IFV | 3 | 0.12 % | | 3 | 0.09 % | | 23 | C C D D C C | CN22CE | 3 | 0.12 % | | 3 | 0.09 % | | 24 | C C D D C C C C C | DL70GREIF | 3 | 0.12 % | | 3 | 0.09 % | | 25 | C D C C C / D | K1DAT/1 | 3 | 0.12 % | | 3 | 0.09 % | | 26 | C C / C C D C C C | OZ/DG1ATN | 3 | 0.12 % | | 4 | 0.12 % | | 27 | C C D / C C D C C C | SM6/DL1HTW | 2 | 0.08 % | | 2 | 0.06 % | | 28 | C C D D D C C C | CQ750RSI | 2 | 0.08 % | | 3 | 0.09 % | | 29 | C C D C C / C C C | ON3MK/QRP | 2 | 0.08 % | | 2 | 0.06 % | | 30 | C D D D D C C | S5030XX | 2 | 0.08 % | | 5 | 0.14 % | | 31 | C D C C C / C C C | G4HOM/QRP | 2 | 0.08 % | | 2 | 0.06 % | | 32 | D C D D C C | 3Z20NP | 1 | 0.04 % | | 1 | 0.03 % | | 33 | C C D D C C C C | GB75ISWL | 1 | 0.04 % | | 1 | 0.03 % | | 34 | D C D D D C C | 3F200AT | 1 | 0.04 % | | 1 | 0.03 % | | 35 | C / C D C C C | I/M0KTZ | 1 | 0.04 % | | 1 | 0.03 % | | 36 | C / C C D C | F/PC3M | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C C D / C D C C | EA8/N2TA | 1 | 0.04 % | | 1 | 0.03 % | | 38 | C C / C D C C C | DL/I1SAF | 1 | 0.04 % | | 1 | 0.03 % | | 39 | C / C C D C C C | I/DL8UUF | 1 | 0.04 % | | 1 | 0.03 % | | 40 | D C D C C C C | 8B1FTDM | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C D C | G5W | 1 | 0.04 % | | 1 | 0.03 % | | 42 | C D D D C C C C | R100KOMI | 1 | 0.04 % | | 1 | 0.03 % | | 43 | C D C C / C | R2EA/M | 1 | 0.04 % | | 3 | 0.09 % | | 44 | C C D C / D | RG5A/6 | 1 | 0.04 % | | 1 | 0.03 % | | 45 | C C D C / C | RL4F/P | 1 | 0.04 % | | 1 | 0.03 % | | 46 | C C / C D C C | EW/R3XA | 1 | 0.04 % | | 1 | 0.03 % | | 47 | C / C C D C C | F/FK8IK | 1 | 0.04 % | | 1 | 0.03 % | | 48 | C C D C C C / C C | YO4RYU/MM | 1 | 0.04 % | | 1 | 0.03 % | |
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