| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BH7PFH | 181 | 37.63 % | | 217 | 38.61 % | | 2 | C C D C C | AA3AZ | 147 | 30.56 % | | 176 | 31.32 % | | 3 | C D C C C | F1VEV | 48 | 9.98 % | | 52 | 9.25 % | | 4 | C D C C | F5CQ | 48 | 9.98 % | | 53 | 9.43 % | | 5 | C C D C | AB1J | 34 | 7.07 % | | 38 | 6.76 % | | 6 | D C D C C | 4L1BR | 5 | 1.04 % | | 6 | 1.07 % | | 7 | D C D C | 3Z6O | 3 | 0.62 % | | 3 | 0.53 % | | 8 | C D D C C | E73KM | 3 | 0.62 % | | 3 | 0.53 % | | 9 | C D C C C / D | W3DQN/5 | 2 | 0.42 % | | 2 | 0.36 % | | 10 | C C D D C C C | DR90VOX | 2 | 0.42 % | | 3 | 0.53 % | | 11 | C C D C C C / D | UA3EGX/3 | 2 | 0.42 % | | 2 | 0.36 % | | 12 | C C D / C C D C C C | CT7/OH2HOD | 1 | 0.21 % | | 1 | 0.18 % | | 13 | D C D C C C | 4S7KKG | 1 | 0.21 % | | 1 | 0.18 % | | 14 | C C D C C C / C D | IN3OWY/I2 | 1 | 0.21 % | | 1 | 0.18 % | | 15 | C C D C C / D | RW1QM/1 | 1 | 0.21 % | | 2 | 0.36 % | | 16 | C C D D D D C C C | OE2013CHC | 1 | 0.21 % | | 1 | 0.18 % | | 17 | C D D C C C | E21YDP | 1 | 0.21 % | | 1 | 0.18 % | |
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