| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AD4Z | 256 | 38.27 % | | 443 | 43.65 % | | 2 | C C D C C | BA4DL | 166 | 24.81 % | | 228 | 22.46 % | | 3 | C C D C C C | CE2MVF | 129 | 19.28 % | | 151 | 14.88 % | | 4 | C D C C C | F4ENK | 23 | 3.44 % | | 28 | 2.76 % | | 5 | C D D C | A73A | 22 | 3.29 % | | 44 | 4.33 % | | 6 | D C D C | 3G3O | 21 | 3.14 % | | 42 | 4.14 % | | 7 | C D C | B1Z | 17 | 2.54 % | | 23 | 2.27 % | | 8 | C D D C C | A71CV | 15 | 2.24 % | | 25 | 2.46 % | | 9 | C D C C | E7DX | 9 | 1.35 % | | 13 | 1.28 % | | 10 | D C D C C | 4A5XX | 6 | 0.90 % | | 8 | 0.79 % | | 11 | C C D C C C C | DK0WRTC | 1 | 0.15 % | | 3 | 0.30 % | | 12 | D C D C C C | 9A7JCY | 1 | 0.15 % | | 1 | 0.10 % | | 13 | C C D D C C C C | PA90IARU | 1 | 0.15 % | | 1 | 0.10 % | | 14 | C C D / C D C C | TI5/W3TB | 1 | 0.15 % | | 2 | 0.20 % | | 15 | C C / C C D C C | TK/PB8DX | 1 | 0.15 % | | 3 | 0.30 % | |
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