| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CA3KHZ | 753 | 37.00 % | | 1120 | 35.75 % | | 2 | C C D C C | AA0AW | 622 | 30.57 % | | 961 | 30.67 % | | 3 | C C D C | AA3B | 243 | 11.94 % | | 464 | 14.81 % | | 4 | C D C C C | F1IWH | 174 | 8.55 % | | 240 | 7.66 % | | 5 | C D C C | F2AR | 136 | 6.68 % | | 196 | 6.26 % | | 6 | C D D C C | A41OO | 22 | 1.08 % | | 31 | 0.99 % | | 7 | D C D C | 3G3O | 16 | 0.79 % | | 19 | 0.61 % | | 8 | D C D C C C | 2E0SQL | 15 | 0.74 % | | 21 | 0.67 % | | 9 | C D D C | A60A | 11 | 0.54 % | | 17 | 0.54 % | | 10 | D C D C C | 3D2RA | 10 | 0.49 % | | 17 | 0.54 % | | 11 | C D C | G0W | 7 | 0.34 % | | 8 | 0.26 % | | 12 | C C D D C C | HF69PW | 3 | 0.15 % | | 5 | 0.16 % | | 13 | C C D / C C D C C C | EA5/YO9FXD | 2 | 0.10 % | | 3 | 0.10 % | | 14 | C D D C C C | S56VJM | 2 | 0.10 % | | 2 | 0.06 % | | 15 | C C D D C | CW90A | 2 | 0.10 % | | 5 | 0.16 % | | 16 | C C D C C / C C C | EA1GT/QRP | 2 | 0.10 % | | 4 | 0.13 % | | 17 | C C D C C C / C | PA0VHA/P | 2 | 0.10 % | | 3 | 0.10 % | | 18 | C C D / C C D C C | HB9/RV3DH | 1 | 0.05 % | | 1 | 0.03 % | | 19 | C C / C C D C | LX/OR5M | 1 | 0.05 % | | 2 | 0.06 % | | 20 | C D C C C / C C C | M1BKL/QRP | 1 | 0.05 % | | 1 | 0.03 % | | 21 | C C D C C C / C C C | LW5EAE/QRP | 1 | 0.05 % | | 1 | 0.03 % | | 22 | C C D C / C C C | OX5M/QRP | 1 | 0.05 % | | 2 | 0.06 % | | 23 | C C / C C D C C C | OZ/DO5MCL | 1 | 0.05 % | | 1 | 0.03 % | | 24 | C D C C / C C D | N2WQ/VE3 | 1 | 0.05 % | | 2 | 0.06 % | | 25 | C C D / C D C C C | PJ4/G3TXF | 1 | 0.05 % | | 1 | 0.03 % | | 26 | C D C C / D | R0IT/6 | 1 | 0.05 % | | 1 | 0.03 % | | 27 | C C D C C C / D | RA4LBS/3 | 1 | 0.05 % | | 1 | 0.03 % | | 28 | C D C C C / C | F4FRC/P | 1 | 0.05 % | | 1 | 0.03 % | | 29 | C C D D D C C | SN150PS | 1 | 0.05 % | | 2 | 0.06 % | | 30 | C C D / C C D C | YS1/NP3J | 1 | 0.05 % | | 1 | 0.03 % | |
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