| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 805 | 33.67 % | | 1461 | 35.17 % | | 2 | C C D C C C | CS7AMH | 551 | 23.04 % | | 816 | 19.64 % | | 3 | C C D C | AA1K | 343 | 14.35 % | | 650 | 15.65 % | | 4 | C D C C | B1HQ | 314 | 13.13 % | | 479 | 11.53 % | | 5 | C D C C C | F1AGR | 142 | 5.94 % | | 211 | 5.08 % | | 6 | C D D C | E70A | 91 | 3.81 % | | 287 | 6.91 % | | 7 | C D D C C | A47RS | 31 | 1.30 % | | 55 | 1.32 % | | 8 | D C D C C | 4M5EN | 22 | 0.92 % | | 42 | 1.01 % | | 9 | C D C | C4W | 19 | 0.79 % | | 34 | 0.82 % | | 10 | D C D C | 3Z0X | 12 | 0.50 % | | 23 | 0.55 % | | 11 | D C D C C C | 2E0CVN | 5 | 0.21 % | | 7 | 0.17 % | | 12 | C C D C C / C | DJ4MM/P | 5 | 0.21 % | | 5 | 0.12 % | | 13 | C C / C C D C C | DL/OZ1AA | 4 | 0.17 % | | 5 | 0.12 % | | 14 | C D C C C / C | F4GKR/P | 4 | 0.17 % | | 6 | 0.14 % | | 15 | C C / C C D C | DL/HG0R | 3 | 0.13 % | | 7 | 0.17 % | | 16 | C C / C D C C | DL/K5NA | 3 | 0.13 % | | 7 | 0.17 % | | 17 | C C D C C C / C C | DG7LAN/MM | 3 | 0.13 % | | 3 | 0.07 % | | 18 | C C D C / D | RG5A/6 | 3 | 0.13 % | | 3 | 0.07 % | | 19 | C C / C C D C C C | DL/HB9DQL | 3 | 0.13 % | | 8 | 0.19 % | | 20 | C D C C / D | W1AW/4 | 2 | 0.08 % | | 3 | 0.07 % | | 21 | C C D D C | OG55W | 2 | 0.08 % | | 8 | 0.19 % | | 22 | C C D / C C D C C | KP2/AA1BU | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 4 | 0.10 % | | 24 | C C D D D C C C | OE100RAD | 2 | 0.08 % | | 3 | 0.07 % | | 25 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 3 | 0.07 % | | 26 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 27 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 28 | C C D C C C C | DL4HMSD | 1 | 0.04 % | | 1 | 0.02 % | | 29 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D D D C C | OE100XA | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 32 | C C D D C C C | PA32DDP | 1 | 0.04 % | | 1 | 0.02 % | | 33 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 3 | 0.07 % | | 35 | C D D C C C | S57NML | 1 | 0.04 % | | 1 | 0.02 % | | 36 | C C D C / C | SE5Z/P | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C C / C D C C C | SP/I4ZSQ | 1 | 0.04 % | | 2 | 0.05 % | | 38 | C C D D C C C C C | SX12ASTRO | 1 | 0.04 % | | 2 | 0.05 % | | 39 | C C D C C C / C | DL5RMH/P | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D C C / C C | YL3IZ/MM | 1 | 0.04 % | | 2 | 0.05 % | | 42 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | |
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