| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 711 | 34.40 % | | 1213 | 35.23 % | | 2 | C C D C C C | CM8NMN | 466 | 22.54 % | | 636 | 18.47 % | | 3 | C C D C | AA1K | 294 | 14.22 % | | 524 | 15.22 % | | 4 | C D C C | B1HQ | 257 | 12.43 % | | 385 | 11.18 % | | 5 | C D C C C | F1AGR | 116 | 5.61 % | | 164 | 4.76 % | | 6 | C D D C | E70A | 90 | 4.35 % | | 285 | 8.28 % | | 7 | C D D C C | A47RS | 24 | 1.16 % | | 49 | 1.42 % | | 8 | D C D C C | 4M5EN | 22 | 1.06 % | | 44 | 1.28 % | | 9 | C D C | C4W | 15 | 0.73 % | | 29 | 0.84 % | | 10 | D C D C | 3Z0X | 9 | 0.44 % | | 13 | 0.38 % | | 11 | C C D C C / C | DJ4MM/P | 6 | 0.29 % | | 11 | 0.32 % | | 12 | C C / C D C C | DL/K5KG | 5 | 0.24 % | | 14 | 0.41 % | | 13 | C C / C C D C C | DL/EA7KW | 4 | 0.19 % | | 5 | 0.15 % | | 14 | C C / C C D C C C | DL/HB9DQL | 3 | 0.15 % | | 4 | 0.12 % | | 15 | C D C C C / C | F4GKR/P | 3 | 0.15 % | | 4 | 0.12 % | | 16 | D C D C C C | 5B4AJC | 3 | 0.15 % | | 3 | 0.09 % | | 17 | C C D C C C / C | DL5RMH/P | 3 | 0.15 % | | 7 | 0.20 % | | 18 | C C / C C D C | DL/HG0R | 3 | 0.15 % | | 8 | 0.23 % | | 19 | C C D C C / C C | RA0LQ/MM | 2 | 0.10 % | | 3 | 0.09 % | | 20 | C C D C C C C | DA0WRTC | 2 | 0.10 % | | 2 | 0.06 % | | 21 | C C D D C | OG55W | 2 | 0.10 % | | 7 | 0.20 % | | 22 | C C D D C C C | HF18FWC | 2 | 0.10 % | | 2 | 0.06 % | | 23 | C D C C / D | R8MB/1 | 2 | 0.10 % | | 2 | 0.06 % | | 24 | C C D D D C C C | OE100SPW | 2 | 0.10 % | | 3 | 0.09 % | | 25 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.05 % | | 1 | 0.03 % | | 26 | D C D C C / C | 9A6DR/P | 1 | 0.05 % | | 1 | 0.03 % | | 27 | D C / C C D C | 4L/RC5A | 1 | 0.05 % | | 1 | 0.03 % | | 28 | D C / C D D C C | 9A/S57KM | 1 | 0.05 % | | 3 | 0.09 % | | 29 | C D / C C D C C | I0/YO3XX | 1 | 0.05 % | | 1 | 0.03 % | | 30 | C C D C C / D | NU1AW/9 | 1 | 0.05 % | | 2 | 0.06 % | | 31 | D C D D D C | 3Z100K | 1 | 0.05 % | | 1 | 0.03 % | | 32 | C C D D D C C | DL100BY | 1 | 0.05 % | | 1 | 0.03 % | | 33 | C D C C D | K1IM1 | 1 | 0.05 % | | 1 | 0.03 % | | 34 | C C D D C C | LM90HQ | 1 | 0.05 % | | 2 | 0.06 % | | 35 | C C D | RT9 | 1 | 0.05 % | | 1 | 0.03 % | | 36 | C C D C / D | RT9T/3 | 1 | 0.05 % | | 1 | 0.03 % | | 37 | C D D C C / C C | S51TA/MM | 1 | 0.05 % | | 2 | 0.06 % | | 38 | C D D C C C | S57NML | 1 | 0.05 % | | 1 | 0.03 % | | 39 | C C / C D C C C | SP/I4ZSQ | 1 | 0.05 % | | 1 | 0.03 % | | 40 | C C D C C C / C C | SP5LJP/MM | 1 | 0.05 % | | 1 | 0.03 % | | 41 | C C D / C C D C C | SV2/RW3AL | 1 | 0.05 % | | 1 | 0.03 % | | 42 | C C D / C D D C C | SV9/S55OO | 1 | 0.05 % | | 1 | 0.03 % | | 43 | C C D D C C C C C | SX12ASTRO | 1 | 0.05 % | | 1 | 0.03 % | | 44 | C C D D D C | YR100R | 1 | 0.05 % | | 1 | 0.03 % | | 45 | C C D C C / C C C | YU1LM/QRP | 1 | 0.05 % | | 1 | 0.03 % | |
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