| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA4DD | 778 | 34.11 % | | 1345 | 35.36 % | | 2 | C C D C C C | CT1BOH | 518 | 22.71 % | | 743 | 19.53 % | | 3 | C C D C | AA1K | 331 | 14.51 % | | 601 | 15.80 % | | 4 | C D C C | B7HQ | 289 | 12.67 % | | 407 | 10.70 % | | 5 | C D C C C | F1PYN | 128 | 5.61 % | | 185 | 4.86 % | | 6 | C D D C | E70A | 95 | 4.16 % | | 263 | 6.91 % | | 7 | C D D C C | A47RS | 31 | 1.36 % | | 59 | 1.55 % | | 8 | D C D C C | 4L7AA | 23 | 1.01 % | | 46 | 1.21 % | | 9 | C D C | C4W | 15 | 0.66 % | | 33 | 0.87 % | | 10 | D C D C | 3Z0X | 10 | 0.44 % | | 19 | 0.50 % | | 11 | D C D C C C | 2E0CVN | 7 | 0.31 % | | 7 | 0.18 % | | 12 | C C D C C / C | DJ4MM/P | 6 | 0.26 % | | 12 | 0.32 % | | 13 | C C / C D C C | DL/K1AR | 5 | 0.22 % | | 11 | 0.29 % | | 14 | C C / C C D C C | DL/OZ1AA | 5 | 0.22 % | | 9 | 0.24 % | | 15 | C C / C C D C | DL/HG0R | 4 | 0.18 % | | 8 | 0.21 % | | 16 | C C D D D C C C | OE100RAD | 3 | 0.13 % | | 4 | 0.11 % | | 17 | C C / C C D C C C | DL/HB9DQL | 3 | 0.13 % | | 4 | 0.11 % | | 18 | C D D C C C | S56WYB | 3 | 0.13 % | | 3 | 0.08 % | | 19 | C D C C C / C | F4GKR/P | 3 | 0.13 % | | 6 | 0.16 % | | 20 | C C D C / D | RT9T/3 | 2 | 0.09 % | | 2 | 0.05 % | | 21 | C C D / C C D C C C / C' | ES7/OH3KAV/M | 2 | 0.09 % | | 2 | 0.05 % | | 22 | C C D C C / C C | RA0LQ/MM | 2 | 0.09 % | | 3 | 0.08 % | | 23 | C C D D C | OG55W | 2 | 0.09 % | | 7 | 0.18 % | | 24 | C C D C C / C C C | OK1WM/QRP | 2 | 0.09 % | | 3 | 0.08 % | | 25 | C C / C D C C C | DL/I4VEQ | 2 | 0.09 % | | 4 | 0.11 % | | 26 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 27 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 2 | 0.05 % | | 28 | C C D C C C / C | DL5RMH/P | 1 | 0.04 % | | 2 | 0.05 % | | 29 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.05 % | | 30 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.03 % | | 31 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.03 % | | 32 | C / C C D C C | F/PD1RP | 1 | 0.04 % | | 2 | 0.05 % | | 33 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C C D D C C C | DB25ONN | 1 | 0.04 % | | 1 | 0.03 % | | 35 | C D C C / D | W1AW/4 | 1 | 0.04 % | | 2 | 0.05 % | | 36 | C C D / C C D C C | YO8/LZ4UU | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C D D C / C | Z35M/P | 1 | 0.04 % | | 1 | 0.03 % | |
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