| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 887 | 34.81 % | | 1593 | 36.20 % | | 2 | C C D C C C | CT1BOH | 615 | 24.14 % | | 906 | 20.59 % | | 3 | C C D C | AA1K | 331 | 12.99 % | | 622 | 14.14 % | | 4 | C D C C | B4HQ | 327 | 12.83 % | | 497 | 11.30 % | | 5 | C D C C C | F0KLY | 153 | 6.00 % | | 218 | 4.95 % | | 6 | C D D C | E70A | 90 | 3.53 % | | 286 | 6.50 % | | 7 | C D D C C | E77EA | 28 | 1.10 % | | 54 | 1.23 % | | 8 | D C D C C | 4M5EN | 25 | 0.98 % | | 53 | 1.20 % | | 9 | C D C | G3P | 13 | 0.51 % | | 36 | 0.82 % | | 10 | D C D C | 3Z0X | 11 | 0.43 % | | 20 | 0.45 % | | 11 | C C D C C / C | DJ1WF/P | 7 | 0.27 % | | 14 | 0.32 % | | 12 | C C / C D C C | DL/K5NA | 6 | 0.24 % | | 11 | 0.25 % | | 13 | C C / C C D C C | DL/EA7KW | 5 | 0.20 % | | 10 | 0.23 % | | 14 | C C / C C D C C C | DL/HB9DQL | 5 | 0.20 % | | 8 | 0.18 % | | 15 | C D C C C / C | F4GKR/P | 4 | 0.16 % | | 5 | 0.11 % | | 16 | C C / C C D C | DL/HG0R | 4 | 0.16 % | | 9 | 0.20 % | | 17 | C C / C D C C C | DL/G4IRN | 3 | 0.12 % | | 6 | 0.14 % | | 18 | C C D D D C C C | OE100CQB | 3 | 0.12 % | | 4 | 0.09 % | | 19 | C C D C C C / C | DL2KUH/P | 3 | 0.12 % | | 5 | 0.11 % | | 20 | C C D D C C | DL65RW | 2 | 0.08 % | | 2 | 0.05 % | | 21 | C C D D C C C | OH73ELK | 2 | 0.08 % | | 3 | 0.07 % | | 22 | C D D C C C | S56WYB | 2 | 0.08 % | | 3 | 0.07 % | | 23 | D C D C C C | 5B4AJC | 2 | 0.08 % | | 2 | 0.05 % | | 24 | C D C C / D | W1AW/4 | 2 | 0.08 % | | 3 | 0.07 % | | 25 | C C C C C | YEOHQ | 2 | 0.08 % | | 2 | 0.05 % | | 26 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 2 | 0.05 % | | 27 | C / C C D C C | F/DF5RF | 1 | 0.04 % | | 1 | 0.02 % | | 28 | D C D D D C | 3Z100K | 1 | 0.04 % | | 1 | 0.02 % | | 29 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 30 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 31 | C D D C C C C | J32FIFA | 1 | 0.04 % | | 2 | 0.05 % | | 32 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.02 % | | 33 | C C D D C | OG55W | 1 | 0.04 % | | 7 | 0.16 % | | 34 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 2 | 0.05 % | | 36 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C C D C / D | SB5N/7 | 1 | 0.04 % | | 2 | 0.05 % | | 38 | C C D C C C / C C | SP5LJP/MM | 1 | 0.04 % | | 1 | 0.02 % | | 39 | C C D / C D D C C | SV9/S55OO | 1 | 0.04 % | | 1 | 0.02 % | | 40 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 2 | 0.05 % | |
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