| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA5AU | 894 | 35.77 % | | 1416 | 37.72 % | | 2 | C C D C C C | BH4AYG | 792 | 31.69 % | | 1055 | 28.10 % | | 3 | C C D C | AA1K | 262 | 10.48 % | | 440 | 11.72 % | | 4 | C D C C | D1HQ | 149 | 5.96 % | | 185 | 4.93 % | | 5 | C D C C C | F1AGR | 149 | 5.96 % | | 210 | 5.59 % | | 6 | C D D C | E73Y | 86 | 3.44 % | | 194 | 5.17 % | | 7 | C D D C C | A47RS | 34 | 1.36 % | | 54 | 1.44 % | | 8 | D C D C C | 3V8CB | 31 | 1.24 % | | 45 | 1.20 % | | 9 | C D C | G3B | 13 | 0.52 % | | 29 | 0.77 % | | 10 | D C D C | 3Z0X | 11 | 0.44 % | | 19 | 0.51 % | | 11 | D C D C C C | 2E0LKC | 10 | 0.40 % | | 14 | 0.37 % | | 12 | C C D C C / C | DF3YG/P | 9 | 0.36 % | | 9 | 0.24 % | | 13 | C C D C C C / C | DL2AMJ/P | 6 | 0.24 % | | 6 | 0.16 % | | 14 | C D C C C / C | F4GKR/P | 5 | 0.20 % | | 8 | 0.21 % | | 15 | C C / C D C C | DL/K3LA | 4 | 0.16 % | | 7 | 0.19 % | | 16 | C C / C C D C | DL/LY4Y | 4 | 0.16 % | | 4 | 0.11 % | | 17 | C C D D D C C C | OE100RAD | 4 | 0.16 % | | 4 | 0.11 % | | 18 | C C / C C D C C | DL/OZ1AA | 3 | 0.12 % | | 4 | 0.11 % | | 19 | C D D C C C | E20YLM | 3 | 0.12 % | | 5 | 0.13 % | | 20 | C C / C C D C C C | DL/HB9DQL | 3 | 0.12 % | | 6 | 0.16 % | | 21 | C C D C C C C | DA0WRTC | 2 | 0.08 % | | 2 | 0.05 % | | 22 | C C D / C C D C C | KP2/AA1BU | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C / C D C C C | DL/I4VEQ | 2 | 0.08 % | | 2 | 0.05 % | | 24 | C D C C / D | W1AW/4 | 2 | 0.08 % | | 2 | 0.05 % | | 25 | C / C C D C C | F/PD1RP | 1 | 0.04 % | | 1 | 0.03 % | | 26 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.05 % | | 27 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 3 | 0.08 % | | 28 | D C C D C C | 9YO5LD | 1 | 0.04 % | | 1 | 0.03 % | | 29 | C C D D D C | HF100I | 1 | 0.04 % | | 2 | 0.05 % | | 30 | C C D C C C / D | IZ4AIH/4 | 1 | 0.04 % | | 1 | 0.03 % | | 31 | C C D C C C / C C | DG7LAN/MM | 1 | 0.04 % | | 1 | 0.03 % | | 32 | C C D / C D C C C | KP4/K6DTT | 1 | 0.04 % | | 1 | 0.03 % | | 33 | C C D D C C | LM90HQ | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C C D D C C C | DB25ONN | 1 | 0.04 % | | 1 | 0.03 % | | 35 | C C D D D C C | OE100XA | 1 | 0.04 % | | 1 | 0.03 % | | 36 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 3 | 0.08 % | | 37 | C C D C / D | RT9T/3 | 1 | 0.04 % | | 1 | 0.03 % | | 38 | C C D C C / D | RW0UM/3 | 1 | 0.04 % | | 2 | 0.05 % | | 39 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.03 % | | 40 | C C D C / C | SE5Z/P | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C C D D C | OG55W | 1 | 0.04 % | | 6 | 0.16 % | | 42 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 2 | 0.05 % | | 43 | C D D C / C C C | Z35M/QRP | 1 | 0.04 % | | 1 | 0.03 % | |
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