| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | AA9HVB | 1536 | 25.05 % | | 2065 | 19.55 % | | 2 | C D C C C | F1AGR | 1304 | 21.27 % | | 2031 | 19.23 % | | 3 | C C D C C | AA0AI | 1209 | 19.72 % | | 1971 | 18.66 % | | 4 | C C D C | AA0O | 954 | 15.56 % | | 2026 | 19.18 % | | 5 | C D C C | E7CW | 934 | 15.23 % | | 2114 | 20.02 % | | 6 | C D D C | A42R | 39 | 0.64 % | | 77 | 0.73 % | | 7 | D C D C | 0W8T | 33 | 0.54 % | | 64 | 0.61 % | | 8 | C D C | C4W | 29 | 0.47 % | | 64 | 0.61 % | | 9 | C D D C C | A61ZX | 20 | 0.33 % | | 31 | 0.29 % | | 10 | D C D C C | 3V8SS | 20 | 0.33 % | | 41 | 0.39 % | | 11 | D C D C C C | 2E0MNG | 10 | 0.16 % | | 12 | 0.11 % | | 12 | C C D / C C D C | EA5/LN2G | 4 | 0.07 % | | 7 | 0.07 % | | 13 | D C D D D C | 5J500D | 3 | 0.05 % | | 4 | 0.04 % | | 14 | C C D / C C D C C C | TI7/EA7KAF | 3 | 0.05 % | | 4 | 0.04 % | | 15 | C C D C C C / C | KC9QFH/M | 3 | 0.05 % | | 3 | 0.03 % | | 16 | C C D C C / C D | AH6FX/W4 | 2 | 0.03 % | | 3 | 0.03 % | | 17 | C C D C C / C | AD4WG/M | 2 | 0.03 % | | 3 | 0.03 % | | 18 | C C D C C / D | NP2MR/4 | 2 | 0.03 % | | 2 | 0.02 % | | 19 | C C D / C D C C | HR9/N3AD | 2 | 0.03 % | | 9 | 0.09 % | | 20 | C D D C C C | E71EEE | 2 | 0.03 % | | 2 | 0.02 % | | 21 | C C D D C | LG80T | 2 | 0.03 % | | 4 | 0.04 % | | 22 | D C D D C C | 3Z15UE | 1 | 0.02 % | | 1 | 0.01 % | | 23 | C C D C / D | AG8U/4 | 1 | 0.02 % | | 1 | 0.01 % | | 24 | C D C C C / D | K9QJS/7 | 1 | 0.02 % | | 1 | 0.01 % | | 25 | C C D C C C / C C | KI7YXD/AG | 1 | 0.02 % | | 1 | 0.01 % | | 26 | C C / C D C C | EI/W5GN | 1 | 0.02 % | | 2 | 0.02 % | | 27 | C C D C C C / C D | KP4AKB/W8 | 1 | 0.02 % | | 1 | 0.01 % | | 28 | C D C C / C | K5DH/M | 1 | 0.02 % | | 1 | 0.01 % | | 29 | C C D D C C C | LZ60KAA | 1 | 0.02 % | | 1 | 0.01 % | | 30 | C D C C C / C | K0SDZ/M | 1 | 0.02 % | | 1 | 0.01 % | | 31 | C C / C C D C C | OZ/DK9LO | 1 | 0.02 % | | 1 | 0.01 % | | 32 | C C D D C C | OZ30EU | 1 | 0.02 % | | 1 | 0.01 % | | 33 | C C D D D C C C | PH100KLM | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C C D / C C D C C | SV9/SV0IG | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C C D C C C / D | KL7IUI/3 | 1 | 0.02 % | | 1 | 0.01 % | | 36 | C D C C / D | W2NQ/7 | 1 | 0.02 % | | 2 | 0.02 % | | 37 | C D / C C D C C C | W5/VK2ACM | 1 | 0.02 % | | 1 | 0.01 % | | 38 | C D C C C / C C D | W5MIL/HR9 | 1 | 0.02 % | | 4 | 0.04 % | | 39 | C D / C C D C | W6/KH7Y | 1 | 0.02 % | | 2 | 0.02 % | |
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