| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 744 | 33.23 % | | 1271 | 33.97 % | | 2 | C C D C C C | AO1FWC | 506 | 22.60 % | | 717 | 19.17 % | | 3 | C C D C | AA1K | 319 | 14.25 % | | 547 | 14.62 % | | 4 | C D C C | E2HQ | 297 | 13.26 % | | 437 | 11.68 % | | 5 | C D C C C | F1IWH | 133 | 5.94 % | | 189 | 5.05 % | | 6 | C D D C | E70A | 88 | 3.93 % | | 310 | 8.29 % | | 7 | C D D C C | A61FK | 25 | 1.12 % | | 49 | 1.31 % | | 8 | D C D C C | 4O1HQ | 25 | 1.12 % | | 49 | 1.31 % | | 9 | D C D C | 3Z0X | 12 | 0.54 % | | 17 | 0.45 % | | 10 | C D C | G3P | 12 | 0.54 % | | 30 | 0.80 % | | 11 | C C / C D C C | DL/K1AR | 9 | 0.40 % | | 16 | 0.43 % | | 12 | C C / C C D C | DL/HG0R | 5 | 0.22 % | | 11 | 0.29 % | | 13 | C C D C C / C | DJ4MM/P | 5 | 0.22 % | | 9 | 0.24 % | | 14 | C C / C C D C C C | DL/HB9DQL | 4 | 0.18 % | | 8 | 0.21 % | | 15 | C C / C C D C C | DL/OZ1AA | 4 | 0.18 % | | 12 | 0.32 % | | 16 | C C D D D C C C | OE100RAD | 4 | 0.18 % | | 4 | 0.11 % | | 17 | C C D C C C / C | DL2KUH/P | 3 | 0.13 % | | 6 | 0.16 % | | 18 | C C / C D C C C | DL/G4IRN | 3 | 0.13 % | | 3 | 0.08 % | | 19 | D C D C C C | 2E0AOZ | 3 | 0.13 % | | 3 | 0.08 % | | 20 | C C D C C / D | NU1AW/9 | 3 | 0.13 % | | 4 | 0.11 % | | 21 | C C D D C | DL82N | 3 | 0.13 % | | 10 | 0.27 % | | 22 | C C D / C C D C C C / C' | ES7/OH3KAV/M | 2 | 0.09 % | | 2 | 0.05 % | | 23 | C C D C C / C C | RA0LQ/MM | 2 | 0.09 % | | 3 | 0.08 % | | 24 | C D C C C / C | F4GKR/P | 2 | 0.09 % | | 3 | 0.08 % | | 25 | C D D C C C | E20YLM | 2 | 0.09 % | | 2 | 0.05 % | | 26 | C C D C / D | RT9T/3 | 2 | 0.09 % | | 4 | 0.11 % | | 27 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.03 % | | 28 | C C D C C C / C C C | EA7AAW/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 29 | D C D C C C / C | 2E0ZDX/M | 1 | 0.04 % | | 1 | 0.03 % | | 30 | C D D C C C C | J32FIFA | 1 | 0.04 % | | 1 | 0.03 % | | 31 | C C D / C D C C C | KP4/K6DTT | 1 | 0.04 % | | 1 | 0.03 % | | 32 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.05 % | | 33 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C D C C / C C D | N4DL/VY2 | 1 | 0.04 % | | 1 | 0.03 % | | 35 | C C D C / C C D | NP4G/KP2 | 1 | 0.04 % | | 1 | 0.03 % | | 36 | C / C C D C C C / C | F/HB9AFI/P | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C C D D C C | LM90HQ | 1 | 0.04 % | | 1 | 0.03 % | | 38 | C C D C / C C D C C | PY0F/PY7RP | 1 | 0.04 % | | 1 | 0.03 % | | 39 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 1 | 0.03 % | | 40 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 2 | 0.05 % | | 42 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.03 % | | 43 | C C D D C C C C C | SX12ASTRO | 1 | 0.04 % | | 1 | 0.03 % | | 44 | C D C C / D | W1AW/4 | 1 | 0.04 % | | 2 | 0.05 % | | 45 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.04 % | | 1 | 0.03 % | | 46 | C C D D D C | YR100R | 1 | 0.04 % | | 1 | 0.03 % | | 47 | C C D C C / C C C | YU1LM/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 48 | C D D C / C C C | Z35M/QRP | 1 | 0.04 % | | 1 | 0.03 % | |
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