|  Callsign structure | # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % | 
|---|
 | 1 | C C D C  | AH0K | 159 | 31.42 % |  | 253 | 35.79 % |  |  | 2 | C C D C C  | BY8AC | 156 | 30.83 % |  | 200 | 28.29 % |  |  | 3 | C C D C C C  | CW4MAX | 102 | 20.16 % |  | 115 | 16.27 % |  |  | 4 | C D C C C  | C6AGU | 17 | 3.36 % |  | 19 | 2.69 % |  |  | 5 | C D D C  | A44A | 15 | 2.96 % |  | 32 | 4.53 % |  |  | 6 | C D C C  | G6XX | 12 | 2.37 % |  | 12 | 1.70 % |  |  | 7 | C D C  | C4W | 10 | 1.98 % |  | 19 | 2.69 % |  |  | 8 | D C D C  | 4U1A | 8 | 1.58 % |  | 22 | 3.11 % |  |  | 9 | C D D C C  | A31MM | 7 | 1.38 % |  | 7 | 0.99 % |  |  | 10 | D C D C C  | 3V8SS | 5 | 0.99 % |  | 8 | 1.13 % |  |  | 11 | C C D / C C D C C  | CT9/OK6RA | 3 | 0.59 % |  | 3 | 0.42 % |  |  | 12 | D C D / C C D C C  | 8R1/AG6UT | 2 | 0.40 % |  | 5 | 0.71 % |  |  | 13 | C C D / C C D C C C  | EA9/EA5HPX | 2 | 0.40 % |  | 3 | 0.42 % |  |  | 14 | C C D C C C / D  | JF3IYW/4 | 2 | 0.40 % |  | 3 | 0.42 % |  |  | 15 | C C D / C D C C  | CT9/R7KW | 1 | 0.20 % |  | 1 | 0.14 % |  |  | 16 | C C / C D C C C  | FG/F6ARC | 1 | 0.20 % |  | 1 | 0.14 % |  |  | 17 | C D D C C C  | S59ABC | 1 | 0.20 % |  | 1 | 0.14 % |  |  | 18 | C C D C C / C C D  | VE3RZ/VP9 | 1 | 0.20 % |  | 1 | 0.14 % |  |  | 19 | C C D C C / C C  | YL3IZ/MM | 1 | 0.20 % |  | 1 | 0.14 % |  |  | 20 | C D D D C  | Z370M | 1 | 0.20 % |  | 1 | 0.14 % |  |  
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