| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA2ZW | 835 | 34.15 % | | 1535 | 35.76 % | | 2 | C C D C C C | CT1BOH | 577 | 23.60 % | | 845 | 19.68 % | | 3 | C C D C | AA1K | 346 | 14.15 % | | 663 | 15.44 % | | 4 | C D C C | B1HQ | 315 | 12.88 % | | 471 | 10.97 % | | 5 | C D C C C | F1RAF | 133 | 5.44 % | | 194 | 4.52 % | | 6 | C D D C | E70A | 91 | 3.72 % | | 323 | 7.52 % | | 7 | D C D C C | 4O1HQ | 28 | 1.15 % | | 56 | 1.30 % | | 8 | C D D C C | A47RS | 23 | 0.94 % | | 45 | 1.05 % | | 9 | C D C | C4W | 15 | 0.61 % | | 38 | 0.89 % | | 10 | D C D C | 3Z0X | 14 | 0.57 % | | 25 | 0.58 % | | 11 | C C D C C / C | DH5AS/P | 7 | 0.29 % | | 8 | 0.19 % | | 12 | C C / C C D C C | DL/EA7KW | 6 | 0.25 % | | 9 | 0.21 % | | 13 | D C D C C C | 2E0CVN | 5 | 0.20 % | | 5 | 0.12 % | | 14 | C C / C C D C C C | DL/HB9DQL | 4 | 0.16 % | | 8 | 0.19 % | | 15 | C C / C C D C | DL/HG0R | 4 | 0.16 % | | 7 | 0.16 % | | 16 | C C D D D C C C | OE100AKD | 4 | 0.16 % | | 6 | 0.14 % | | 17 | C C D C C C / C | DL5RMH/P | 3 | 0.12 % | | 4 | 0.09 % | | 18 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 3 | 0.07 % | | 19 | C C / C D C C | DL/W4PA | 2 | 0.08 % | | 7 | 0.16 % | | 20 | C C / C D C C C | DL/G4IRN | 2 | 0.08 % | | 2 | 0.05 % | | 21 | C C D D C | OG55W | 2 | 0.08 % | | 6 | 0.14 % | | 22 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 3 | 0.07 % | | 24 | C D C C C / C | F4GKR/P | 2 | 0.08 % | | 4 | 0.09 % | | 25 | C C D C / D | RT9T/3 | 2 | 0.08 % | | 3 | 0.07 % | | 26 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 27 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 28 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 29 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 30 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 32 | C C D C / C C D | NP4G/KP2 | 1 | 0.04 % | | 1 | 0.02 % | | 33 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 34 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.02 % | | 36 | C C D D C C C | OH73ELK | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C D D C C C | S57NML | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C C D C / C | SE5Z/P | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C C D / C C D C C | SV2/RW3AL | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C D C C / D | W1AW/4 | 1 | 0.04 % | | 1 | 0.02 % | | 43 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | | 44 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 2 | 0.05 % | |
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