| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 837 | 35.05 % | | 1477 | 35.64 % | | 2 | C C D C C C | CS7ACF | 584 | 24.46 % | | 834 | 20.13 % | | 3 | C C D C | AA1K | 360 | 15.08 % | | 661 | 15.95 % | | 4 | C D C C | B7HQ | 231 | 9.67 % | | 358 | 8.64 % | | 5 | C D C C C | F1GZV | 135 | 5.65 % | | 200 | 4.83 % | | 6 | C D D C | E73Y | 91 | 3.81 % | | 357 | 8.61 % | | 7 | C D D C C | A47RS | 33 | 1.38 % | | 58 | 1.40 % | | 8 | D C D C C | 3V8CB | 22 | 0.92 % | | 44 | 1.06 % | | 9 | C D C | G3P | 16 | 0.67 % | | 39 | 0.94 % | | 10 | D C D C | 3Z0X | 12 | 0.50 % | | 16 | 0.39 % | | 11 | C C D C C / C | DH5AS/P | 8 | 0.34 % | | 9 | 0.22 % | | 12 | C C D C C C / C | DL2KUH/P | 6 | 0.25 % | | 7 | 0.17 % | | 13 | C C / C D C C | DL/K5NA | 5 | 0.21 % | | 12 | 0.29 % | | 14 | C C / C C D C C C | DL/HB9DQL | 5 | 0.21 % | | 7 | 0.17 % | | 15 | C C D D D C C C | OE100CQB | 4 | 0.17 % | | 4 | 0.10 % | | 16 | C C / C C D C | DL/HG0R | 4 | 0.17 % | | 6 | 0.14 % | | 17 | C C / C C D C C | DL/OZ1AA | 4 | 0.17 % | | 8 | 0.19 % | | 18 | C C D D C | OG55W | 3 | 0.13 % | | 9 | 0.22 % | | 19 | C C D C C / D | NU1AW/9 | 3 | 0.13 % | | 5 | 0.12 % | | 20 | D C D C C C | 2E0CVN | 3 | 0.13 % | | 4 | 0.10 % | | 21 | C C D C / D | RT9T/3 | 2 | 0.08 % | | 2 | 0.05 % | | 22 | C D C C / D | R8MB/1 | 2 | 0.08 % | | 3 | 0.07 % | | 23 | C D C C C / C | F4GKR/P | 2 | 0.08 % | | 3 | 0.07 % | | 24 | C / C C D C C | F/DF5RF | 2 | 0.08 % | | 2 | 0.05 % | | 25 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 26 | C C D / C C D C C C / C' | HB0/DK3RED/P | 1 | 0.04 % | | 1 | 0.02 % | | 27 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.05 % | | 28 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 3 | 0.07 % | | 29 | C C D / C C D C C | EA6/DK5ON | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 32 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 2 | 0.05 % | | 33 | C D D C C C | S57NML | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C C D C / C | SE5Z/P | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C C / C D C C C | SP/I4ZSQ | 1 | 0.04 % | | 2 | 0.05 % | | 36 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | |
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