| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 824 | 33.88 % | | 1483 | 34.00 % | | 2 | C C D C C C | CN8MAA | 586 | 24.10 % | | 863 | 19.78 % | | 3 | C C D C | AA1K | 357 | 14.68 % | | 706 | 16.19 % | | 4 | C D C C | B4HQ | 274 | 11.27 % | | 450 | 10.32 % | | 5 | C D C C C | F1GRH | 154 | 6.33 % | | 232 | 5.32 % | | 6 | C D D C | E72U | 90 | 3.70 % | | 351 | 8.05 % | | 7 | C D D C C | A41NN | 32 | 1.32 % | | 60 | 1.38 % | | 8 | D C D C C | 3V8CB | 31 | 1.27 % | | 60 | 1.38 % | | 9 | C D C | C4W | 16 | 0.66 % | | 47 | 1.08 % | | 10 | D C D C | 3Z0X | 11 | 0.45 % | | 19 | 0.44 % | | 11 | D C D C C C | 2E0CVD | 7 | 0.29 % | | 8 | 0.18 % | | 12 | C C / C C D C C C | DL/HB9DQL | 5 | 0.21 % | | 7 | 0.16 % | | 13 | C C D C C C / C | DL2KUH/P | 4 | 0.16 % | | 4 | 0.09 % | | 14 | C D C C C / C | F4GKR/P | 4 | 0.16 % | | 6 | 0.14 % | | 15 | C C / C C D C C | DL/EA7KW | 4 | 0.16 % | | 9 | 0.21 % | | 16 | C C / C C D C | DL/HG0R | 3 | 0.12 % | | 9 | 0.21 % | | 17 | C C D D C C C | DB25ONN | 2 | 0.08 % | | 2 | 0.05 % | | 18 | C C / C D C C C | DL/I4VEQ | 2 | 0.08 % | | 3 | 0.07 % | | 19 | C C D D C | OG55W | 2 | 0.08 % | | 7 | 0.16 % | | 20 | C C D C C / C | DH5AS/P | 2 | 0.08 % | | 2 | 0.05 % | | 21 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 5 | 0.11 % | | 22 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 23 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 24 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 25 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 26 | C C D / C C D C C C / C' | ES7/OH3KAV/M | 1 | 0.04 % | | 1 | 0.02 % | | 27 | C / C D C C | I/W9CF | 1 | 0.04 % | | 1 | 0.02 % | | 28 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 29 | C D C C C / D | K9QVB/9 | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 2 | 0.05 % | | 31 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 2 | 0.05 % | | 32 | C C D D D C C C | OE100SPW | 1 | 0.04 % | | 2 | 0.05 % | | 33 | C C / C D C C | EI/W5GN | 1 | 0.04 % | | 5 | 0.11 % | | 34 | C C D C / D | RT9T/3 | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C D D C C C | S57NML | 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 C D / C C D C C | SV2/RW3AL | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C D C C / D | W1AW/4 | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C C D C C / C C | YL3IZ/MM | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C D D C / C C C | Z35M/QRP | 1 | 0.04 % | | 1 | 0.02 % | |
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