| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 803 | 33.28 % | | 1460 | 34.84 % | | 2 | C C D C C C | CT1BOH | 600 | 24.87 % | | 887 | 21.16 % | | 3 | C C D C | AA1K | 309 | 12.81 % | | 613 | 14.63 % | | 4 | C D C C | B4HQ | 290 | 12.02 % | | 427 | 10.19 % | | 5 | C D C C C | F1AGR | 157 | 6.51 % | | 233 | 5.56 % | | 6 | C D D C | E70A | 95 | 3.94 % | | 286 | 6.82 % | | 7 | C D D C C | A71HQ | 30 | 1.24 % | | 51 | 1.22 % | | 8 | D C D C C | 4O1HQ | 28 | 1.16 % | | 52 | 1.24 % | | 9 | C D C | G3P | 16 | 0.66 % | | 42 | 1.00 % | | 10 | D C D C | 3Z0X | 15 | 0.62 % | | 26 | 0.62 % | | 11 | C C D C C / C | DJ4MM/P | 7 | 0.29 % | | 11 | 0.26 % | | 12 | C C D C C C / C | DK1TBL/P | 5 | 0.21 % | | 6 | 0.14 % | | 13 | C C D D D C C C | OE100RAD | 4 | 0.17 % | | 6 | 0.14 % | | 14 | C C / C C D C C C | DL/HB9DQL | 4 | 0.17 % | | 7 | 0.17 % | | 15 | C C / C D C C | DL/K5NA | 3 | 0.12 % | | 9 | 0.21 % | | 16 | D C D C C C | 9A1CCY | 3 | 0.12 % | | 4 | 0.10 % | | 17 | C C D D C | OG55W | 3 | 0.12 % | | 9 | 0.21 % | | 18 | C C / C C D C | DL/HG0R | 3 | 0.12 % | | 8 | 0.19 % | | 19 | C C / C D C C C | DL/I4VEQ | 3 | 0.12 % | | 5 | 0.12 % | | 20 | C C / C C D C C | DL/OZ1AA | 3 | 0.12 % | | 7 | 0.17 % | | 21 | C C D C C / C C | RA0LQ/MM | 2 | 0.08 % | | 3 | 0.07 % | | 22 | C / C C D C C | F/DF5RF | 2 | 0.08 % | | 2 | 0.05 % | | 23 | C C D C / D | RT9T/3 | 2 | 0.08 % | | 3 | 0.07 % | | 24 | C C D D D C | HF100I | 2 | 0.08 % | | 2 | 0.05 % | | 25 | C D C C C / C | F6BQG/P | 2 | 0.08 % | | 2 | 0.05 % | | 26 | C C D C C / D | NU1AW/9 | 2 | 0.08 % | | 3 | 0.07 % | | 27 | C C C D C C | DDF2AJ | 1 | 0.04 % | | 1 | 0.02 % | | 28 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 29 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 30 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C C D C / C C D | NP4G/KP2 | 1 | 0.04 % | | 1 | 0.02 % | | 32 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 2 | 0.05 % | | 33 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C C D D D C C | OE100XA | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C C D D C C C | DB25ONN | 1 | 0.04 % | | 1 | 0.02 % | | 36 | C C D C / C C D C C | PY0F/PY7RP | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C D C C C C | F4FFZZ | 1 | 0.04 % | | 1 | 0.02 % | | 38 | D C D C C / C C C | 9A2OP/QRP | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 2 | 0.05 % | | 40 | C D D C C C | S57NML | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C D / C C D C C C | SV8/HB9FIH | 1 | 0.04 % | | 1 | 0.02 % | | 43 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 2 | 0.05 % | | 44 | C D C C / D | W9OA/9 | 1 | 0.04 % | | 2 | 0.05 % | | 45 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 2 | 0.05 % | | 46 | C D D C / C C C | Z35M/QRP | 1 | 0.04 % | | 2 | 0.05 % | |
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