| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CE2SQE | 819 | 26.85 % | | 985 | 25.57 % | | 2 | C C D C C | AA0AO | 741 | 24.30 % | | 926 | 24.04 % | | 3 | C C D C | AA1O | 618 | 20.26 % | | 864 | 22.43 % | | 4 | C D C C C | F1ADG | 413 | 13.54 % | | 495 | 12.85 % | | 5 | C D C C | D1DX | 249 | 8.16 % | | 309 | 8.02 % | | 6 | C D D C C | A41NN | 40 | 1.31 % | | 53 | 1.38 % | | 7 | C D D C | A42K | 33 | 1.08 % | | 49 | 1.27 % | | 8 | D C D C C C | 2E0CVN | 25 | 0.82 % | | 27 | 0.70 % | | 9 | C D C | D4C | 22 | 0.72 % | | 30 | 0.78 % | | 10 | D C D C | 3G3W | 20 | 0.66 % | | 29 | 0.75 % | | 11 | D C D C C | 4X1IM | 16 | 0.52 % | | 20 | 0.52 % | | 12 | C C D D C C C | CS25FOQ | 12 | 0.39 % | | 15 | 0.39 % | | 13 | C D C C C / C | G3RTU/P | 8 | 0.26 % | | 10 | 0.26 % | | 14 | C D D C C C | E73FDE | 5 | 0.16 % | | 6 | 0.16 % | | 15 | C C D D C | LY29A | 4 | 0.13 % | | 6 | 0.16 % | | 16 | C C D D C C | EI19RE | 4 | 0.13 % | | 4 | 0.10 % | | 17 | C C D / C C D C C | EA5/PA5CA | 3 | 0.10 % | | 3 | 0.08 % | | 18 | C C D C C / C C C | SP9RC/QRP | 3 | 0.10 % | | 3 | 0.08 % | | 19 | D C D D C | 4U73B | 2 | 0.07 % | | 3 | 0.08 % | | 20 | C C D C C C / C | IT9CIL/P | 2 | 0.07 % | | 3 | 0.08 % | | 21 | C C D C / D | NE8O/4 | 2 | 0.07 % | | 2 | 0.05 % | | 22 | C C D C C C / D | UA4ASE/6 | 2 | 0.07 % | | 2 | 0.05 % | | 23 | C C D / C D C C C | EA8/M0EDX | 1 | 0.03 % | | 1 | 0.03 % | | 24 | C C D D D C C C | LY800SMG | 1 | 0.03 % | | 2 | 0.05 % | | 25 | C C D D D C C | LZ116RF | 1 | 0.03 % | | 1 | 0.03 % | | 26 | C C D D D C | SN100L | 1 | 0.03 % | | 1 | 0.03 % | | 27 | D C D D D C | 9A775O | 1 | 0.03 % | | 1 | 0.03 % | | 28 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.03 % | | 1 | 0.03 % | | 29 | C C D C C C / C C | UW5EJX/MM | 1 | 0.03 % | | 1 | 0.03 % | |
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