| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | CX2AQ | 62 | 31.16 % | | 81 | 31.76 % | | 2 | C C D C C C | BG4GOV | 52 | 26.13 % | | 67 | 26.27 % | | 3 | C C D C | EW6W | 40 | 20.10 % | | 53 | 20.78 % | | 4 | C D C C | F5IN | 15 | 7.54 % | | 17 | 6.67 % | | 5 | C D C C C | F5MXQ | 8 | 4.02 % | | 11 | 4.31 % | | 6 | D C D C | 4X0A | 3 | 1.51 % | | 6 | 2.35 % | | 7 | C D D C C | E77EA | 3 | 1.51 % | | 3 | 1.18 % | | 8 | C D D C | E74X | 3 | 1.51 % | | 3 | 1.18 % | | 9 | C C D / C C D C C | EA5/DK5IM | 1 | 0.50 % | | 1 | 0.39 % | | 10 | C C D D C C | ES17EU | 1 | 0.50 % | | 1 | 0.39 % | | 11 | C / C C D C C | F/SQ6MS | 1 | 0.50 % | | 1 | 0.39 % | | 12 | D C D C C | 9A1AA | 1 | 0.50 % | | 1 | 0.39 % | | 13 | C C D D C C C | EI33WAW | 1 | 0.50 % | | 1 | 0.39 % | | 14 | C C D D C C C C | HG17EYOF | 1 | 0.50 % | | 1 | 0.39 % | | 15 | C C D / C C D C C C |
IS0/IZ2ZOT | 1 | 0.50 % | | 1 | 0.39 % | | 16 | C C / C D C C C | LA/G3SWC | 1 | 0.50 % | | 1 | 0.39 % | | 17 | C C / C C D C | LX/OO9O | 1 | 0.50 % | | 2 | 0.78 % | | 18 | C C D C / C C D | SP4Z/VE3 | 1 | 0.50 % | | 1 | 0.39 % | | 19 | C C / C C D C C C | TK/DL2SAX | 1 | 0.50 % | | 1 | 0.39 % | | 20 | C C D D C | YR32A | 1 | 0.50 % | | 1 | 0.39 % | | 21 | C D C | Z3Y | 1 | 0.50 % | | 1 | 0.39 % | |
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