| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C | AA3R | 474 | 27.04 % | | 638 | 30.31 % | | 2 | C C D C C C | AP5ARS | 472 | 26.93 % | | 512 | 24.32 % | | 3 | C C D C C | AA1ON | 422 | 24.07 % | | 477 | 22.66 % | | 4 | C D C C C | F1DHX | 116 | 6.62 % | | 127 | 6.03 % | | 5 | C D C C | E7CW | 96 | 5.48 % | | 118 | 5.61 % | | 6 | C D D C | A42K | 33 | 1.88 % | | 55 | 2.61 % | | 7 | D C D C | 3W9A | 23 | 1.31 % | | 31 | 1.47 % | | 8 | C D D C C | A41DL | 23 | 1.31 % | | 27 | 1.28 % | | 9 | D C D C C C | 2E0CEY | 18 | 1.03 % | | 18 | 0.86 % | | 10 | D C D C C | 3V8SS | 18 | 1.03 % | | 18 | 0.86 % | | 11 | C D C | C4W | 18 | 1.03 % | | 23 | 1.09 % | | 12 | C C D D C | HB90G | 6 | 0.34 % | | 6 | 0.29 % | | 13 | C D C C C / C | G0KAO/P | 4 | 0.23 % | | 4 | 0.19 % | | 14 | C C D D C C C | DM88YLF | 4 | 0.23 % | | 4 | 0.19 % | | 15 | C C D C C C / D | JI1TBA/6 | 3 | 0.17 % | | 3 | 0.14 % | | 16 | C C D D C C | EV80OB | 2 | 0.11 % | | 3 | 0.14 % | | 17 | C C D D D C C | DR100PE | 2 | 0.11 % | | 2 | 0.10 % | | 18 | C C D C C C C | AM7SSAL | 2 | 0.11 % | | 2 | 0.10 % | | 19 | C C D / C C D C C C | IL7/IK7YTT | 2 | 0.11 % | | 3 | 0.14 % | | 20 | C C D C C / C | DB2ZJ/P | 2 | 0.11 % | | 2 | 0.10 % | | 21 | C C D D D C C C C | DK100DDSR | 1 | 0.06 % | | 1 | 0.05 % | | 22 | C C D / C C D C C | CT7/VA3VH | 1 | 0.06 % | | 1 | 0.05 % | | 23 | C C D D C C C C C | HG24TISZA | 1 | 0.06 % | | 1 | 0.05 % | | 24 | D C D D D C | 9A100V | 1 | 0.06 % | | 2 | 0.10 % | | 25 | D C D D C | 9A44A | 1 | 0.06 % | | 2 | 0.10 % | | 26 | C D C C / C D | K0OZ/K1 | 1 | 0.06 % | | 1 | 0.05 % | | 27 | C C / C C D C C | OE/YT7BA | 1 | 0.06 % | | 1 | 0.05 % | | 28 | C C D D D C C C C C | OE100RADIO | 1 | 0.06 % | | 1 | 0.05 % | | 29 | C D C C / D | R8MB/1 | 1 | 0.06 % | | 1 | 0.05 % | | 30 | C D D C C C | S37OVT | 1 | 0.06 % | | 1 | 0.05 % | | 31 | C D D D C C C | S570CST | 1 | 0.06 % | | 2 | 0.10 % | | 32 | C C D C C C / C C C | SV8DTD/QRP | 1 | 0.06 % | | 1 | 0.05 % | | 33 | C C D / C D C C | TI8/N7ZG | 1 | 0.06 % | | 1 | 0.05 % | |
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