| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C D C C | K0AD | 99 | 40.24 % | | 146 | 43.07 % | | 2 | C D C C C | G0EFO | 48 | 19.51 % | | 63 | 18.58 % | | 3 | C C D C | AA3B | 37 | 15.04 % | | 52 | 15.34 % | | 4 | C C D C C C | CM8NMN | 30 | 12.20 % | | 34 | 10.03 % | | 5 | C C D C C | AD5TT | 30 | 12.20 % | | 42 | 12.39 % | | 6 | C C D C / D | AI0Y/9 | 1 | 0.41 % | | 1 | 0.29 % | | 7 | C C D C C / C | OZ7RP/P | 1 | 0.41 % | | 1 | 0.29 % | |
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