| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0AI | 1007 | 28.93 % | | 1431 | 28.99 % | | 2 | C C D C C C | BD1IIJ | 959 | 27.55 % | | 1220 | 24.71 % | | 3 | C C D C | AA1K | 648 | 18.62 % | | 1056 | 21.39 % | | 4 | C D C C | E7CW | 399 | 11.46 % | | 583 | 11.81 % | | 5 | C D C C C | C6AGU | 239 | 6.87 % | | 301 | 6.10 % | | 6 | C D D C | A44A | 41 | 1.18 % | | 64 | 1.30 % | | 7 | D C D C C | 3D2AG | 37 | 1.06 % | | 57 | 1.15 % | | 8 | C D D C C | A35EU | 33 | 0.95 % | | 43 | 0.87 % | | 9 | D C D C | 3Z0X | 27 | 0.78 % | | 49 | 0.99 % | | 10 | C D C | B4T | 25 | 0.72 % | | 43 | 0.87 % | | 11 | D C D C C C | 2E0CVN | 15 | 0.43 % | | 22 | 0.45 % | | 12 | C C D C C C / D | JA3GZE/1 | 7 | 0.20 % | | 7 | 0.14 % | | 13 | C C D D D C | HF100N | 4 | 0.11 % | | 8 | 0.16 % | | 14 | C C / C C D C C | OK/LZ3SF | 3 | 0.09 % | | 4 | 0.08 % | | 15 | C D C C / D | R8MB/1 | 3 | 0.09 % | | 3 | 0.06 % | | 16 | C C D D C | OG55W | 3 | 0.09 % | | 4 | 0.08 % | | 17 | C C D D D C C C | HF100TPN | 3 | 0.09 % | | 3 | 0.06 % | | 18 | C D D C C C | E21YDP | 2 | 0.06 % | | 4 | 0.08 % | | 19 | C C D / C C D C C | IH9/OK6RA | 2 | 0.06 % | | 2 | 0.04 % | | 20 | C C D D D C C | CR140AA | 2 | 0.06 % | | 2 | 0.04 % | | 21 | C C D / C D C C | EA5/R3AR | 2 | 0.06 % | | 3 | 0.06 % | | 22 | C C D C C C / C | DL1AQU/P | 2 | 0.06 % | | 2 | 0.04 % | | 23 | D C D / C C D C C | 5Z4/LZ4NM | 2 | 0.06 % | | 4 | 0.08 % | | 24 | C C D / C D C C C | CT7/F6HBR | 2 | 0.06 % | | 2 | 0.04 % | | 25 | C D D C C / C C C | A71AE/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 26 | D C D C C C / D | 7K1MAG/2 | 1 | 0.03 % | | 1 | 0.02 % | | 27 | D C D D D C | 3Z100I | 1 | 0.03 % | | 3 | 0.06 % | | 28 | C C D / C C D C | IH9/OL3R | 1 | 0.03 % | | 1 | 0.02 % | | 29 | D C D / C D C C C | 3B8/F4HQZ | 1 | 0.03 % | | 2 | 0.04 % | | 30 | C C D C D | LO7H0 | 1 | 0.03 % | | 1 | 0.02 % | | 31 | C C D / C C D C C C | EW5/DL7AFY | 1 | 0.03 % | | 1 | 0.02 % | | 32 | C / C C D C C | F/OM2ZA | 1 | 0.03 % | | 1 | 0.02 % | | 33 | C C / C D C C C | FG/F6ARC | 1 | 0.03 % | | 1 | 0.02 % | | 34 | C C D C C / D | TA1FA/2 | 1 | 0.03 % | | 1 | 0.02 % | | 35 | C C D C / C C D C | VP2V/WJ2O | 1 | 0.03 % | | 2 | 0.04 % | | 36 | C C D D D D C C | YR1918BB | 1 | 0.03 % | | 1 | 0.02 % | | 37 | C C D C C / C C C | YU1LM/QRP | 1 | 0.03 % | | 2 | 0.04 % | | 38 | C C / C C D C | ZA/OU2I | 1 | 0.03 % | | 2 | 0.04 % | |
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