| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | DF1MM | 74 | 29.72 % | | 75 | 29.76 % | | 2 | C C D C | DR6J | 73 | 29.32 % | | 74 | 29.37 % | | 3 | C C D C C C | DL0MCM | 53 | 21.29 % | | 53 | 21.03 % | | 4 | C D C C | K3UL | 15 | 6.02 % | | 16 | 6.35 % | | 5 | C D C C C | D1DNR | 10 | 4.02 % | | 10 | 3.97 % | | 6 | C D D C | E72U | 9 | 3.61 % | | 9 | 3.57 % | | 7 | C D D C C | E77EA | 3 | 1.20 % | | 3 | 1.19 % | | 8 | D C D C C | 9A1AA | 2 | 0.80 % | | 2 | 0.79 % | | 9 | C C D D C C C | HB90TOC | 2 | 0.80 % | | 2 | 0.79 % | | 10 | C C / C C D C C | EW/NR1AT | 2 | 0.80 % | | 2 | 0.79 % | | 11 | C D C | P3X | 2 | 0.80 % | | 2 | 0.79 % | | 12 | C C D / C D C C | EA5/R3AR | 1 | 0.40 % | | 1 | 0.40 % | | 13 | C C D D D C C | HG315VA | 1 | 0.40 % | | 1 | 0.40 % | | 14 | C C / C D C C | EW/R1AT | 1 | 0.40 % | | 1 | 0.40 % | | 15 | D C D C | 9A1A | 1 | 0.40 % | | 1 | 0.40 % | |
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