| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 784 | 34.00 % | | 1396 | 34.39 % | | 2 | C C D C C C | CT1BOH | 549 | 23.81 % | | 825 | 20.33 % | | 3 | C C D C | AA1K | 318 | 13.79 % | | 603 | 14.86 % | | 4 | C D C C | D1HQ | 268 | 11.62 % | | 427 | 10.52 % | | 5 | C D C C C | F1GRH | 139 | 6.03 % | | 216 | 5.32 % | | 6 | C D D C | E70A | 94 | 4.08 % | | 311 | 7.66 % | | 7 | D C D C C | 4L7AA | 26 | 1.13 % | | 49 | 1.21 % | | 8 | C D D C C | A47RS | 23 | 1.00 % | | 44 | 1.08 % | | 9 | C D C | C4W | 17 | 0.74 % | | 41 | 1.01 % | | 10 | D C D C | 3Z0X | 13 | 0.56 % | | 19 | 0.47 % | | 11 | C C / C C D C C | DL/EA7KW | 7 | 0.30 % | | 15 | 0.37 % | | 12 | C C / C C D C | DL/HG0R | 5 | 0.22 % | | 13 | 0.32 % | | 13 | D C D C C C | 2E0CVN | 5 | 0.22 % | | 5 | 0.12 % | | 14 | C C / C D C C | DL/K5KG | 5 | 0.22 % | | 13 | 0.32 % | | 15 | C C / C C D C C C | DL/HB9DQL | 5 | 0.22 % | | 12 | 0.30 % | | 16 | C C / C D C C C | DL/G4IRN | 4 | 0.17 % | | 6 | 0.15 % | | 17 | C C D C C / C | DJ4MM/P | 4 | 0.17 % | | 7 | 0.17 % | | 18 | C D C C C / C | F4GKR/P | 4 | 0.17 % | | 5 | 0.12 % | | 19 | C C D C C C / C | DL2KUH/P | 3 | 0.13 % | | 6 | 0.15 % | | 20 | C D D C C C | E20YLM | 3 | 0.13 % | | 4 | 0.10 % | | 21 | C C D C C / C C | DG7LA/MM | 3 | 0.13 % | | 3 | 0.07 % | | 22 | C C D / C C D C C | EA6/DK5ON | 2 | 0.09 % | | 3 | 0.07 % | | 23 | C C D D C | OG55W | 2 | 0.09 % | | 6 | 0.15 % | | 24 | C / C C D C C | F/DF5RF | 2 | 0.09 % | | 3 | 0.07 % | | 25 | C C D C / D | RT9T/3 | 2 | 0.09 % | | 2 | 0.05 % | | 26 | C C D C C / C C C | YU1LM/QRP | 2 | 0.09 % | | 2 | 0.05 % | | 27 | C D C C / D | W1AW/4 | 2 | 0.09 % | | 2 | 0.05 % | | 28 | C C D D C C C | OH73ELK | 2 | 0.09 % | | 2 | 0.05 % | | 29 | C D / C C D C C C | I5/IK2QIK | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 2 | 0.05 % | | 31 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 3 | 0.07 % | | 32 | C C D C C C / C C D | IK2AIT/IV3 | 1 | 0.04 % | | 1 | 0.02 % | | 33 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C C D D D C C C | OE100SPW | 1 | 0.04 % | | 1 | 0.02 % | | 35 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 3 | 0.07 % | | 36 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 2 | 0.05 % | | 40 | C C D D C C | LY85DS | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C D D C / C C C | Z35M/QRP | 1 | 0.04 % | | 1 | 0.02 % | |
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