| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1QD | 845 | 33.96 % | | 1558 | 34.86 % | | 2 | C C D C C C | CM8NMN | 615 | 24.72 % | | 918 | 20.54 % | | 3 | C C D C | AA1V | 338 | 13.59 % | | 694 | 15.53 % | | 4 | C D C C | B1HQ | 252 | 10.13 % | | 418 | 9.35 % | | 5 | C D C C C | F1AGR | 175 | 7.03 % | | 252 | 5.64 % | | 6 | C D D C | E72U | 91 | 3.66 % | | 308 | 6.89 % | | 7 | D C D C C | 4M5EN | 31 | 1.25 % | | 68 | 1.52 % | | 8 | C D D C C | A47RS | 30 | 1.21 % | | 64 | 1.43 % | | 9 | D C D C | 3Z0X | 17 | 0.68 % | | 33 | 0.74 % | | 10 | C D C | C4W | 15 | 0.60 % | | 37 | 0.83 % | | 11 | D C D C C C | 2E0HPI | 9 | 0.36 % | | 12 | 0.27 % | | 12 | C D C C C / C | F1HOM/P | 5 | 0.20 % | | 9 | 0.20 % | | 13 | C C D C C / C | DH9DX/P | 5 | 0.20 % | | 7 | 0.16 % | | 14 | C C / C D C C | DL/K5NA | 5 | 0.20 % | | 10 | 0.22 % | | 15 | C C D C C C / C | DL2KUH/P | 4 | 0.16 % | | 6 | 0.13 % | | 16 | C C D D D C C C | OE100RAD | 4 | 0.16 % | | 6 | 0.13 % | | 17 | C C / C C D C C | DL/OZ1AA | 4 | 0.16 % | | 6 | 0.13 % | | 18 | C D D C C C | R18PAN | 3 | 0.12 % | | 4 | 0.09 % | | 19 | C C D D C C C | DB25ONN | 3 | 0.12 % | | 3 | 0.07 % | | 20 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 2 | 0.04 % | | 21 | C C D D D C | HF100I | 2 | 0.08 % | | 2 | 0.04 % | | 22 | C C D C C / C C C | OK1WM/QRP | 2 | 0.08 % | | 3 | 0.07 % | | 23 | C / C C D C C | F/DK1EW | 2 | 0.08 % | | 2 | 0.04 % | | 24 | C C / C C D C | DL/HG0R | 2 | 0.08 % | | 4 | 0.09 % | | 25 | C C / C C D C C C | DL/LZ1ABC | 2 | 0.08 % | | 4 | 0.09 % | | 26 | C C D D C | OG55W | 2 | 0.08 % | | 8 | 0.18 % | | 27 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 1 | 0.02 % | | 28 | C C D D D C C | DL100BY | 1 | 0.04 % | | 1 | 0.02 % | | 29 | D C D C C C / C | 2E0IBU/M | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C D C C C / C C C | G1ZHD/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C C D / C C D C C C / C' | HB0/DK3RED/P | 1 | 0.04 % | | 1 | 0.02 % | | 32 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.04 % | | 33 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C C D C C C / C C D | IK2AIT/IV3 | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 2 | 0.04 % | | 36 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 4 | 0.09 % | | 37 | C C D C C C / C C C | EA6AAW/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C D C C C / D | OE9DAI/9 | 1 | 0.04 % | | 2 | 0.04 % | | 39 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 40 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 41 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 43 | C C D C / C | SE5Z/P | 1 | 0.04 % | | 1 | 0.02 % | | 44 | C C / C D C C C | SP/I4ZSQ | 1 | 0.04 % | | 3 | 0.07 % | | 45 | C C D / C C D C C | SV2/RW3AL | 1 | 0.04 % | | 1 | 0.02 % | | 46 | C C D / C C D C C C | SV8/HB9FIH | 1 | 0.04 % | | 1 | 0.02 % | | 47 | C C D D C C C C C | SX12ASTRO | 1 | 0.04 % | | 1 | 0.02 % | | 48 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.02 % | | 49 | C C D C C / C C | YL3IZ/MM | 1 | 0.04 % | | 1 | 0.02 % | |
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