| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CT2FPV | 247 | 44.34 % | | 359 | 44.21 % | | 2 | C C D C C | AA2EQ | 141 | 25.31 % | | 209 | 25.74 % | | 3 | C C D C | AA3B | 63 | 11.31 % | | 98 | 12.07 % | | 4 | C D C C C | F4GYI | 47 | 8.44 % | | 58 | 7.14 % | | 5 | C D C C | F2VX | 29 | 5.21 % | | 44 | 5.42 % | | 6 | C D C | G1P | 5 | 0.90 % | | 8 | 0.99 % | | 7 | C C D D D C C C | DM900ZWI | 4 | 0.72 % | | 5 | 0.62 % | | 8 | D C D C | 3Z1K | 4 | 0.72 % | | 9 | 1.11 % | | 9 | C D D C C | S51MA | 2 | 0.36 % | | 2 | 0.25 % | | 10 | C D D C | E77C | 2 | 0.36 % | | 2 | 0.25 % | | 11 | D C D C C C | 7L4IOU | 2 | 0.36 % | | 2 | 0.25 % | | 12 | C C / C C D C C C | OE/PE1NYQ | 2 | 0.36 % | | 2 | 0.25 % | | 13 | C C D D C C C | HF60PKI | 2 | 0.36 % | | 3 | 0.37 % | | 14 | C C D D D C | HF100I | 1 | 0.18 % | | 2 | 0.25 % | | 15 | C D D C C C | E21YDP | 1 | 0.18 % | | 1 | 0.12 % | | 16 | D C D C C | 9H3SJ | 1 | 0.18 % | | 2 | 0.25 % | | 17 | C C D C C C C | DQ1IGRY | 1 | 0.18 % | | 1 | 0.12 % | | 18 | C C D D C C | SN20UM | 1 | 0.18 % | | 3 | 0.37 % | | 19 | C C D C C C / C C C | SP6EIY/QRP | 1 | 0.18 % | | 1 | 0.12 % | | 20 | C C D C C / C C C | YU1LM/QRP | 1 | 0.18 % | | 1 | 0.12 % | |
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