| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 625 | 27.81 % | | 855 | 26.40 % | | 2 | C C D C | AA1K | 560 | 24.92 % | | 959 | 29.61 % | | 3 | C C D C C C | CT7AGZ | 489 | 21.76 % | | 621 | 19.17 % | | 4 | C D C C | E7CW | 288 | 12.82 % | | 429 | 13.24 % | | 5 | C D C C C | F1IKA | 148 | 6.59 % | | 188 | 5.80 % | | 6 | C D D C | E73M | 33 | 1.47 % | | 48 | 1.48 % | | 7 | D C D C C | 3V8SS | 27 | 1.20 % | | 35 | 1.08 % | | 8 | C D D C C | E70AW | 24 | 1.07 % | | 29 | 0.90 % | | 9 | D C D C | 3B8M | 19 | 0.85 % | | 27 | 0.83 % | | 10 | C D C | B7P | 18 | 0.80 % | | 27 | 0.83 % | | 11 | C C D D C C | EO50FF | 3 | 0.13 % | | 5 | 0.15 % | | 12 | C C D / C C D C | EA5/RV2A | 2 | 0.09 % | | 4 | 0.12 % | | 13 | D C / C D C C C | 9A/F5SNJ | 1 | 0.04 % | | 1 | 0.03 % | | 14 | C C D D C C C | DQ60ANT | 1 | 0.04 % | | 1 | 0.03 % | | 15 | D C / C C D C C | 4L/LY4ZZ | 1 | 0.04 % | | 1 | 0.03 % | | 16 | D C D C C C | 2E0INN | 1 | 0.04 % | | 1 | 0.03 % | | 17 | C C D / C C D C C C | EA8/DL2DXA | 1 | 0.04 % | | 1 | 0.03 % | | 18 | C C D / C D C C C | EA7/G4BJM | 1 | 0.04 % | | 2 | 0.06 % | | 19 | C C D C C / C C C | EA1GT/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 20 | C C D C / C D | KH7X/W7 | 1 | 0.04 % | | 1 | 0.03 % | | 21 | C C / C D C C C | LA/G3SWC | 1 | 0.04 % | | 1 | 0.03 % | | 22 | C D C C / D | R8FF/8 | 1 | 0.04 % | | 1 | 0.03 % | | 23 | C C D C / D | RG5A/6 | 1 | 0.04 % | | 1 | 0.03 % | |
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