| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 892 | 33.60 % | | 1672 | 35.47 % | | 2 | C C D C C C | CT1BOH | 663 | 24.97 % | | 982 | 20.83 % | | 3 | C C D C | AA1K | 373 | 14.05 % | | 743 | 15.76 % | | 4 | C D C C | B1HQ | 290 | 10.92 % | | 458 | 9.72 % | | 5 | C D C C C | F1AGR | 164 | 6.18 % | | 251 | 5.32 % | | 6 | C D D C | E70A | 92 | 3.47 % | | 296 | 6.28 % | | 7 | C D D C C | A47RS | 35 | 1.32 % | | 67 | 1.42 % | | 8 | D C D C C | 4O1HQ | 33 | 1.24 % | | 54 | 1.15 % | | 9 | C D C | G3P | 18 | 0.68 % | | 43 | 0.91 % | | 10 | D C D C | 3Z0X | 15 | 0.56 % | | 24 | 0.51 % | | 11 | D C D C C C | 2E0KXR | 8 | 0.30 % | | 10 | 0.21 % | | 12 | C C D C C C / C | DG3LIM/P | 6 | 0.23 % | | 7 | 0.15 % | | 13 | C C / C C D C C | DL/OZ1AA | 5 | 0.19 % | | 8 | 0.17 % | | 14 | C C D C C / C | DK2RZ/M | 5 | 0.19 % | | 6 | 0.13 % | | 15 | C D C C C / C | F4GKR/P | 5 | 0.19 % | | 5 | 0.11 % | | 16 | C C D D C C C | DB25ONN | 4 | 0.15 % | | 4 | 0.08 % | | 17 | C C / C D C C | DL/K5NA | 4 | 0.15 % | | 9 | 0.19 % | | 18 | C C / C C D C | DL/HG0R | 3 | 0.11 % | | 5 | 0.11 % | | 19 | C C D D D C C C | OE100RAD | 3 | 0.11 % | | 3 | 0.06 % | | 20 | C C / C C D C C C | DL/HB9DQL | 3 | 0.11 % | | 9 | 0.19 % | | 21 | C D D C C C | S56WYB | 2 | 0.08 % | | 4 | 0.08 % | | 22 | C C D C / D | RG5A/6 | 2 | 0.08 % | | 2 | 0.04 % | | 23 | C C D D C | OG55W | 2 | 0.08 % | | 10 | 0.21 % | | 24 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 3 | 0.06 % | | 25 | C C D C / C | RA7E/P | 2 | 0.08 % | | 2 | 0.04 % | | 26 | C C D / C C D C C | SV2/RW3AL | 2 | 0.08 % | | 3 | 0.06 % | | 27 | C D C C / D | R8MB/1 | 2 | 0.08 % | | 4 | 0.08 % | | 28 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 1 | 0.02 % | | 29 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.04 % | | 30 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 31 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.04 % | | 32 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 4 | 0.08 % | | 33 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C D D C C C C | J32FIFA | 1 | 0.04 % | | 1 | 0.02 % | | 36 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 3 | 0.06 % | | 37 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C / C D C C | I/W9CF | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C D / C C D C C C | I1/YY5CTN | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C / C D C C C | SP/I4ZSQ | 1 | 0.04 % | | 2 | 0.04 % | | 42 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.02 % | | 43 | C C D C C C / D | SP7TEV/7 | 1 | 0.04 % | | 1 | 0.02 % | | 44 | C / C C D C C | F/DF5RF | 1 | 0.04 % | | 1 | 0.02 % | | 45 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 46 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 3 | 0.06 % | | 47 | C D D C / C | Z35M/P | 1 | 0.04 % | | 1 | 0.02 % | |
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