| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BG5BAA | 1192 | 31.07 % | | 1439 | 29.16 % | | 2 | C C D C C | AA1SG | 953 | 24.84 % | | 1212 | 24.56 % | | 3 | C C D C | AA3B | 688 | 17.93 % | | 1018 | 20.63 % | | 4 | C D C C C | B1RHS | 472 | 12.30 % | | 562 | 11.39 % | | 5 | C D C C | E7CW | 248 | 6.46 % | | 328 | 6.65 % | | 6 | C D D C C | A41NN | 44 | 1.15 % | | 57 | 1.16 % | | 7 | D C D C C | 3B8CW | 38 | 0.99 % | | 50 | 1.01 % | | 8 | D C D C C C | 2E0BIB | 37 | 0.96 % | | 45 | 0.91 % | | 9 | C D D C | A42K | 35 | 0.91 % | | 49 | 0.99 % | | 10 | C D C | C4W | 29 | 0.76 % | | 46 | 0.93 % | | 11 | D C D C | 3Z0X | 26 | 0.68 % | | 31 | 0.63 % | | 12 | C C D D C | EI20C | 12 | 0.31 % | | 17 | 0.34 % | | 13 | C C D D C C C | DL35SDR | 9 | 0.23 % | | 16 | 0.32 % | | 14 | C D D C C C | E21YDP | 8 | 0.21 % | | 9 | 0.18 % | | 15 | C C D D C C | LB42UH | 7 | 0.18 % | | 9 | 0.18 % | | 16 | C C D C C C / D | IK5BOH/2 | 5 | 0.13 % | | 7 | 0.14 % | | 17 | C C D C C / C | DD6TH/P | 4 | 0.10 % | | 4 | 0.08 % | | 18 | C C D D D C C | DQ100SL | 3 | 0.08 % | | 3 | 0.06 % | | 19 | C D C C / D | R2AY/6 | 3 | 0.08 % | | 3 | 0.06 % | | 20 | C C D D C C C C | DO70DARC | 3 | 0.08 % | | 3 | 0.06 % | | 21 | C C D D D C C C | OL700DKA | 2 | 0.05 % | | 3 | 0.06 % | | 22 | C C D / C D C C | HR5/F2JD | 2 | 0.05 % | | 2 | 0.04 % | | 23 | D C D D C C C | 3Z90PZK | 2 | 0.05 % | | 3 | 0.06 % | | 24 | D C D D C | 4A60A | 2 | 0.05 % | | 2 | 0.04 % | | 25 | C C D / C C D C C C | BW2/JP1RIW | 1 | 0.03 % | | 1 | 0.02 % | | 26 | C C D C C / C D | AH6FX/W4 | 1 | 0.03 % | | 1 | 0.02 % | | 27 | D C / C D C C C | 9A/F4HWS | 1 | 0.03 % | | 1 | 0.02 % | | 28 | C C D C C C / C C C | DL6MHG/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 29 | C C / C D D C | LZ/Z36W | 1 | 0.03 % | | 2 | 0.04 % | | 30 | C D C C C / C | M0PLX/M | 1 | 0.03 % | | 2 | 0.04 % | | 31 | C C D / C C D C C | OA4/XQ3SA | 1 | 0.03 % | | 1 | 0.02 % | | 32 | C C / C D D C C | OE/E77DX | 1 | 0.03 % | | 1 | 0.02 % | | 33 | D C D / C D C C | 5Z4/G3AB | 1 | 0.03 % | | 1 | 0.02 % | | 34 | C D D D C C | R195AM | 1 | 0.03 % | | 2 | 0.04 % | | 35 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 36 | C D D D D C | S5400J | 1 | 0.03 % | | 1 | 0.02 % | | 37 | C C D C C / C C C | YU1LM/QRP | 1 | 0.03 % | | 1 | 0.02 % | |
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