| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 856 | 34.38 % | | 1534 | 36.03 % | | 2 | C C D C C C | CS7AMH | 585 | 23.49 % | | 865 | 20.32 % | | 3 | C C D C | AA1K | 343 | 13.78 % | | 640 | 15.03 % | | 4 | C D C C | B7HQ | 323 | 12.97 % | | 498 | 11.70 % | | 5 | C D C C C | F4EFI | 141 | 5.66 % | | 208 | 4.89 % | | 6 | C D D C | E70A | 95 | 3.82 % | | 255 | 5.99 % | | 7 | D C D C C | 4M5EN | 29 | 1.16 % | | 52 | 1.22 % | | 8 | C D D C C | A61FK | 29 | 1.16 % | | 49 | 1.15 % | | 9 | D C D C | 3Z0X | 16 | 0.64 % | | 29 | 0.68 % | | 10 | C D C | G3P | 13 | 0.52 % | | 31 | 0.73 % | | 11 | D C D C C C | 5B4AJC | 6 | 0.24 % | | 9 | 0.21 % | | 12 | C C / C D C C | DL/K5KG | 5 | 0.20 % | | 8 | 0.19 % | | 13 | C D C C C / C | F4GKR/P | 4 | 0.16 % | | 9 | 0.21 % | | 14 | C C D C C / C | DK3WW/M | 4 | 0.16 % | | 4 | 0.09 % | | 15 | C C / C C D C | DL/HG0R | 4 | 0.16 % | | 4 | 0.09 % | | 16 | C D C C / D | R8MB/1 | 3 | 0.12 % | | 4 | 0.09 % | | 17 | C C / C C D C C | DL/OZ1AA | 3 | 0.12 % | | 5 | 0.12 % | | 18 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 4 | 0.09 % | | 19 | C / C C D C C | F/DF5RF | 2 | 0.08 % | | 3 | 0.07 % | | 20 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 3 | 0.07 % | | 21 | C C / C C D C C C | DL/HB9DQL | 2 | 0.08 % | | 4 | 0.09 % | | 22 | C C D D C | OG55W | 2 | 0.08 % | | 8 | 0.19 % | | 23 | C C D C / D | RT9T/3 | 2 | 0.08 % | | 3 | 0.07 % | | 24 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 25 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 26 | C C D C C C / C | DL5RMH/P | 1 | 0.04 % | | 2 | 0.05 % | | 27 | C C D C / C C D | NP4G/KP2 | 1 | 0.04 % | | 1 | 0.02 % | | 28 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 29 | C C D D D C C C | OE100SPW | 1 | 0.04 % | | 2 | 0.05 % | | 30 | C C D C / C C D C C | PY0F/PY7RP | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C C D D C C C | OH73ELK | 1 | 0.04 % | | 1 | 0.02 % | | 32 | D C / C C D C | 4L/RC4A | 1 | 0.04 % | | 2 | 0.05 % | | 33 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 2 | 0.05 % | | 34 | C C D D | RW15 | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 3 | 0.07 % | | 36 | C D D C C C | S57NML | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C C / C D C C C | SP/I4ZSQ | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 2 | 0.05 % | | 39 | C C D / C C D C C | YO8/LZ4UU | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 2 | 0.05 % | | 42 | C D D C / C | Z35M/P | 1 | 0.04 % | | 1 | 0.02 % | |
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