| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AC1U | 81 | 43.78 % | | 88 | 44.00 % | | 2 | C C D C C | BY8AC | 43 | 23.24 % | | 47 | 23.50 % | | 3 | C C D C C C | DL1AUZ | 22 | 11.89 % | | 23 | 11.50 % | | 4 | C D D C | E70T | 11 | 5.95 % | | 11 | 5.50 % | | 5 | D C D C | 3Z1K | 7 | 3.78 % | | 8 | 4.00 % | | 6 | C D D C C | S51YI | 6 | 3.24 % | | 7 | 3.50 % | | 7 | C D C C | K1LZ | 6 | 3.24 % | | 6 | 3.00 % | | 8 | C D C C C | F5VHY | 3 | 1.62 % | | 3 | 1.50 % | | 9 | D C D C C | 9A1AA | 2 | 1.08 % | | 2 | 1.00 % | | 10 | D C D D C | 9A70A | 1 | 0.54 % | | 2 | 1.00 % | | 11 | C C D D C | OG73X | 1 | 0.54 % | | 1 | 0.50 % | | 12 | C C D C C C C | DA0WRTC | 1 | 0.54 % | | 1 | 0.50 % | | 13 | C C D D D C | YR100R | 1 | 0.54 % | | 1 | 0.50 % | |
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