| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BG2VIA | 409 | 38.69 % | | 500 | 37.20 % | | 2 | C C D C C | AA4DD | 310 | 29.33 % | | 396 | 29.46 % | | 3 | C C D C | AA3B | 148 | 14.00 % | | 217 | 16.15 % | | 4 | C D C C C | F1IWH | 77 | 7.28 % | | 85 | 6.32 % | | 5 | C D C C | F2AR | 45 | 4.26 % | | 57 | 4.24 % | | 6 | C D D C C | A61EK | 12 | 1.14 % | | 17 | 1.26 % | | 7 | C D D C | A44A | 11 | 1.04 % | | 15 | 1.12 % | | 8 | C D C | D1M | 9 | 0.85 % | | 10 | 0.74 % | | 9 | D C D C C | 4J3DJ | 6 | 0.57 % | | 6 | 0.45 % | | 10 | D C D C | 3Z9K | 6 | 0.57 % | | 9 | 0.67 % | | 11 | C C D / C C D C C C | IS0/IK2FDV | 3 | 0.28 % | | 3 | 0.22 % | | 12 | C C D C C C / D | IT9RGY/4 | 3 | 0.28 % | | 5 | 0.37 % | | 13 | C C D D C | OH10A | 2 | 0.19 % | | 3 | 0.22 % | | 14 | D C D C C C | 4O4YCP | 2 | 0.19 % | | 3 | 0.22 % | | 15 | C C D D D C | HF100I | 2 | 0.19 % | | 3 | 0.22 % | | 16 | C C / C C D C C | OZ/DJ1XT | 2 | 0.19 % | | 4 | 0.30 % | | 17 | D C D D C C | 8Z88ND | 1 | 0.09 % | | 1 | 0.07 % | | 18 | C D C C C C | I0WBXI | 1 | 0.09 % | | 1 | 0.07 % | | 19 | C C D C C / C | DL0GE/P | 1 | 0.09 % | | 1 | 0.07 % | | 20 | C C D D C C C | OE18SGU | 1 | 0.09 % | | 1 | 0.07 % | | 21 | C C D / C C D C C | HB0/DL5YM | 1 | 0.09 % | | 2 | 0.15 % | | 22 | C C D C C / D | RA3DI/3 | 1 | 0.09 % | | 1 | 0.07 % | | 23 | C C D C C C C C C | SN0UNESCO | 1 | 0.09 % | | 1 | 0.07 % | | 24 | C C D D D C C C | SO100ZHP | 1 | 0.09 % | | 1 | 0.07 % | | 25 | C C D / C C D C C / C | SV8/DL5JJ/P | 1 | 0.09 % | | 1 | 0.07 % | | 26 | C C D / C D C C | VY2/W5AJ | 1 | 0.09 % | | 1 | 0.07 % | |
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