| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1SU | 797 | 30.51 % | | 1092 | 28.58 % | | 2 | C C D C C C | BD1IIJ | 578 | 22.13 % | | 738 | 19.31 % | | 3 | C C D C | AA1K | 575 | 22.01 % | | 981 | 25.67 % | | 4 | C D C C | D1WW | 310 | 11.87 % | | 497 | 13.01 % | | 5 | C D C C C | F4FFH | 140 | 5.36 % | | 186 | 4.87 % | | 6 | C D D C | A44A | 43 | 1.65 % | | 61 | 1.60 % | | 7 | C D D C C | A61EK | 41 | 1.57 % | | 59 | 1.54 % | | 8 | D C D C C | 3B9HA | 34 | 1.30 % | | 45 | 1.18 % | | 9 | C D C | B4T | 29 | 1.11 % | | 52 | 1.36 % | | 10 | D C D C | 3Z0X | 20 | 0.77 % | | 43 | 1.13 % | | 11 | C D D C C C | E71EEE | 7 | 0.27 % | | 10 | 0.26 % | | 12 | D C D C C C | 2E0SDV | 6 | 0.23 % | | 6 | 0.16 % | | 13 | C C D D C C C | LY60KTU | 3 | 0.11 % | | 6 | 0.16 % | | 14 | C D | S5 | 3 | 0.11 % | | 3 | 0.08 % | | 15 | D C D / C C D C C | 8R1/AG6UT | 2 | 0.08 % | | 4 | 0.10 % | | 16 | C C D C / D | RG5A/6 | 2 | 0.08 % | | 5 | 0.13 % | | 17 | C C D C C / C | DJ0LJ/M | 2 | 0.08 % | | 2 | 0.05 % | | 18 | C C D C C C / C | DL7USW/P | 1 | 0.04 % | | 2 | 0.05 % | | 19 | D C D C C / C | 9A5KR/P | 1 | 0.04 % | | 1 | 0.03 % | | 20 | C C D D D C C C C | DG500BIER | 1 | 0.04 % | | 2 | 0.05 % | | 21 | D C D / C C C C | 5Z4/DJTF | 1 | 0.04 % | | 1 | 0.03 % | | 22 | C C D / C C D C | EA8/OH5C | 1 | 0.04 % | | 3 | 0.08 % | | 23 | C / C D C C C | F/G4BJM | 1 | 0.04 % | | 1 | 0.03 % | | 24 | C C D C C C C | DP6HSSC | 1 | 0.04 % | | 1 | 0.03 % | | 25 | C D C C C C C C | F5OHMNST | 1 | 0.04 % | | 1 | 0.03 % | | 26 | C C D / C C D C C | HB0/DK4YJ | 1 | 0.04 % | | 3 | 0.08 % | | 27 | C C D C C C / D | IZ8JFL/1 | 1 | 0.04 % | | 1 | 0.03 % | | 28 | C C D D D C C | DL800JE | 1 | 0.04 % | | 3 | 0.08 % | | 29 | C C D | NA4 | 1 | 0.04 % | | 1 | 0.03 % | | 30 | C C D D C | OG55W | 1 | 0.04 % | | 1 | 0.03 % | | 31 | C C / C C D C C | OZ/DJ5LA | 1 | 0.04 % | | 1 | 0.03 % | | 32 | C C D / C D C C | CT9/R7KW | 1 | 0.04 % | | 3 | 0.08 % | | 33 | D C D D C C C | 9A50CBM | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C D D D C C C | S570ABC | 1 | 0.04 % | | 2 | 0.05 % | | 35 | C C D C C / D | UA3AP/1 | 1 | 0.04 % | | 1 | 0.03 % | | 36 | C C D C C / C C C | US6EU/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C C / C C D C | ZA/OG1N | 1 | 0.04 % | | 1 | 0.03 % | |
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