| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | KA3MAJ | 31 | 40.26 % | | 32 | 38.10 % | | 2 | C D C C C | F6FDY | 21 | 27.27 % | | 21 | 25.00 % | | 3 | C C D C C | AA5HH | 14 | 18.18 % | | 14 | 16.67 % | | 4 | C C D C | AC0K | 6 | 7.79 % | | 6 | 7.14 % | | 5 | C D C C | K1DC | 4 | 5.19 % | | 4 | 4.76 % | | 6 | C D / C C D C C | W6/UT5UF | 1 | 1.30 % | | 1 | 1.19 % | |
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