| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | DL1FCU | 40 | 38.83 % | | 41 | 38.32 % | | 2 | C C D C C | DF3EH | 32 | 31.07 % | | 34 | 31.78 % | | 3 | C D C C C | F4FDR | 15 | 14.56 % | | 15 | 14.02 % | | 4 | C C D C | GW0A | 9 | 8.74 % | | 10 | 9.35 % | | 5 | C D C C | R3GZ | 2 | 1.94 % | | 2 | 1.87 % | | 6 | D C D C C C | 9A3CJW | 1 | 0.97 % | | 1 | 0.93 % | | 7 | C D C | M7T | 1 | 0.97 % | | 1 | 0.93 % | | 8 | C C D D D C | LM450C | 1 | 0.97 % | | 1 | 0.93 % | | 9 | C D D C C | S57YK | 1 | 0.97 % | | 1 | 0.93 % | | 10 | C C D / C C D C C C | SV2/SV7CUD | 1 | 0.97 % | | 1 | 0.93 % | |
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