| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1SU | 816 | 33.37 % | | 1291 | 34.70 % | | 2 | C C D C C C | BD0AAI | 725 | 29.65 % | | 967 | 25.99 % | | 3 | C C D C | AA1K | 319 | 13.05 % | | 561 | 15.08 % | | 4 | C D C C | B7HQ | 191 | 7.81 % | | 265 | 7.12 % | | 5 | C D C C C | F1AGR | 155 | 6.34 % | | 188 | 5.05 % | | 6 | C D D C | E70A | 85 | 3.48 % | | 227 | 6.10 % | | 7 | C D D C C | A47RS | 27 | 1.10 % | | 49 | 1.32 % | | 8 | D C D C C | 4M5EN | 19 | 0.78 % | | 31 | 0.83 % | | 9 | C D C | C4W | 16 | 0.65 % | | 25 | 0.67 % | | 10 | D C D C C C | 2E0AOZ | 12 | 0.49 % | | 14 | 0.38 % | | 11 | D C D C | 3Z0X | 12 | 0.49 % | | 17 | 0.46 % | | 12 | C C D C C / C | DH5AS/P | 7 | 0.29 % | | 7 | 0.19 % | | 13 | C D C C C / C | F4GKR/P | 7 | 0.29 % | | 7 | 0.19 % | | 14 | C C D C C C / C | DG3LSM/P | 7 | 0.29 % | | 9 | 0.24 % | | 15 | C C D D D C C C | DL100BOY | 5 | 0.20 % | | 9 | 0.24 % | | 16 | C C / C C D C C C | DL/HB9DQL | 4 | 0.16 % | | 6 | 0.16 % | | 17 | C D D C C C | E21YDP | 3 | 0.12 % | | 4 | 0.11 % | | 18 | C C / C C D C | DL/HG0R | 3 | 0.12 % | | 4 | 0.11 % | | 19 | C D C C / D | R8MB/1 | 3 | 0.12 % | | 4 | 0.11 % | | 20 | C C D C C / D | NU1AW/9 | 3 | 0.12 % | | 4 | 0.11 % | | 21 | C C D D C C C | DB25ONN | 2 | 0.08 % | | 6 | 0.16 % | | 22 | C C / C C D C C | DL/OZ7AM | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C D C C / C C C | DF2WF/QRP | 2 | 0.08 % | | 2 | 0.05 % | | 24 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 2 | 0.05 % | | 25 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 2 | 0.05 % | | 26 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 27 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.03 % | | 28 | C / C C D C C C | F/PA2PME | 1 | 0.04 % | | 1 | 0.03 % | | 29 | C D / C C D C C | B0/BA7IO | 1 | 0.04 % | | 1 | 0.03 % | | 30 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 31 | C D C C C C | G3RSGB | 1 | 0.04 % | | 1 | 0.03 % | | 32 | C C D D D C | HF100I | 1 | 0.04 % | | 1 | 0.03 % | | 33 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C C D D D C C | OE100XA | 1 | 0.04 % | | 1 | 0.03 % | | 35 | C C D C / C | DC1F/P | 1 | 0.04 % | | 1 | 0.03 % | | 36 | C / C C D C C | F/DF5RF | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.03 % | | 38 | C C / C C D C C / C | SM/DO7EN/P | 1 | 0.04 % | | 1 | 0.03 % | | 39 | C C D / C C D C C | SV2/RW3AL | 1 | 0.04 % | | 1 | 0.03 % | | 40 | C C D / C C D C C C | SV8/HB9FIH | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C D D C / C C C | Z35M/QRP | 1 | 0.04 % | | 1 | 0.03 % | |
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