| Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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| 1 | C C D C C C | CA4OMQ | 168 | 29.73 % | | 198 | 25.19 % | | | 2 | C C D C | AH2R | 160 | 28.32 % | | 267 | 33.97 % | | | 3 | C C D C C | AL7LO | 139 | 24.60 % | | 176 | 22.39 % | | | 4 | C D C C C | C6ANM | 26 | 4.60 % | | 36 | 4.58 % | | | 5 | D C D C | 3G2S | 18 | 3.19 % | | 33 | 4.20 % | | | 6 | C D D C | A93W | 16 | 2.83 % | | 22 | 2.80 % | | | 7 | C D D C C | E77EA | 9 | 1.59 % | | 14 | 1.78 % | | | 8 | C D C | C4E | 7 | 1.24 % | | 8 | 1.02 % | | | 9 | D C D C C | 8P6NW | 7 | 1.24 % | | 8 | 1.02 % | | | 10 | C D C C | F5IG | 6 | 1.06 % | | 6 | 0.76 % | | | 11 | D C D C C C | 4E9VVN | 2 | 0.35 % | | 3 | 0.38 % | | | 12 | D C / C D C C | 9A/W3WM | 1 | 0.18 % | | 1 | 0.13 % | | | 13 | C D D C C C | E74FRS | 1 | 0.18 % | | 1 | 0.13 % | | | 14 | C C D / C C D C C C | EA6/CO8NMN | 1 | 0.18 % | | 1 | 0.13 % | | | 15 | C C D / C D C C | CE3/N5NU | 1 | 0.18 % | | 1 | 0.13 % | | | 16 | C C D / C C D C | KH0/KC0W | 1 | 0.18 % | | 2 | 0.25 % | | | 17 | C C / C D C C | ON/G2TT | 1 | 0.18 % | | 1 | 0.13 % | | | 18 | C C D C / C C D C | VP2V/NN1C | 1 | 0.18 % | | 2 | 0.25 % | |
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