| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 663 | 35.15 % | | 1090 | 35.37 % | | 2 | C C D C C C | CT1BOH | 490 | 25.98 % | | 627 | 20.34 % | | 3 | C C D C | AA1K | 269 | 14.26 % | | 477 | 15.48 % | | 4 | C D C C | D1HQ | 157 | 8.32 % | | 220 | 7.14 % | | 5 | C D C C C | F1RAF | 97 | 5.14 % | | 143 | 4.64 % | | 6 | C D D C | E72U | 85 | 4.51 % | | 312 | 10.12 % | | 7 | C D D C C | A47RS | 23 | 1.22 % | | 48 | 1.56 % | | 8 | D C D C C | 4M5EN | 22 | 1.17 % | | 36 | 1.17 % | | 9 | C D C | C4W | 13 | 0.69 % | | 29 | 0.94 % | | 10 | D C D C | 3Z0X | 9 | 0.48 % | | 13 | 0.42 % | | 11 | D C D C C C | 2E0CVN | 7 | 0.37 % | | 8 | 0.26 % | | 12 | C C / C C D C C | DL/OZ1AA | 5 | 0.27 % | | 7 | 0.23 % | | 13 | C D C C C / C | F4GKR/P | 4 | 0.21 % | | 6 | 0.19 % | | 14 | C C / C D C C | DL/K9NW | 4 | 0.21 % | | 10 | 0.32 % | | 15 | C C / C C D C | DL/LY4Y | 3 | 0.16 % | | 3 | 0.10 % | | 16 | C C / C D C C C | DL/W0AIH | 3 | 0.16 % | | 3 | 0.10 % | | 17 | C C / C C D C C C | DL/HB9DQL | 3 | 0.16 % | | 3 | 0.10 % | | 18 | C D D C C C | S56WYB | 3 | 0.16 % | | 4 | 0.13 % | | 19 | C C D C C C / C | DL2KUH/P | 3 | 0.16 % | | 4 | 0.13 % | | 20 | C C D D C C C | DB25ONN | 2 | 0.11 % | | 2 | 0.06 % | | 21 | C C D D D C C C | OE100RAD | 2 | 0.11 % | | 3 | 0.10 % | | 22 | C C D C C / C | DH9DX/P | 2 | 0.11 % | | 3 | 0.10 % | | 23 | C C D D C | OG55W | 2 | 0.11 % | | 11 | 0.36 % | | 24 | D C / C D D C C | 9A/S57KM | 1 | 0.05 % | | 2 | 0.06 % | | 25 | D C / C C D C | 4L/RC5A | 1 | 0.05 % | | 2 | 0.06 % | | 26 | D C D C C / C | 9A6DR/P | 1 | 0.05 % | | 1 | 0.03 % | | 27 | D C / C C D C C C | 9A/DL5ROB | 1 | 0.05 % | | 1 | 0.03 % | | 28 | C C D C C / D | NU1AW/9 | 1 | 0.05 % | | 3 | 0.10 % | | 29 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.05 % | | 1 | 0.03 % | | 30 | C C D D D C C | OE100XA | 1 | 0.05 % | | 1 | 0.03 % | | 31 | C D / C C D C C | I0/YO3XX | 1 | 0.05 % | | 1 | 0.03 % | | 32 | C D D C C / C C | S51TA/MM | 1 | 0.05 % | | 1 | 0.03 % | | 33 | C / C C D C C | F/PD1RP | 1 | 0.05 % | | 2 | 0.06 % | | 34 | C C D C / D | SB5N/7 | 1 | 0.05 % | | 1 | 0.03 % | | 35 | C C D C / C | SE5Z/P | 1 | 0.05 % | | 1 | 0.03 % | | 36 | C C / C C D C C / C | SM/DO7EN/P | 1 | 0.05 % | | 1 | 0.03 % | | 37 | C D C C / D | W1AW/4 | 1 | 0.05 % | | 1 | 0.03 % | | 38 | C C D C C / C C C | YU1LM/QRP | 1 | 0.05 % | | 1 | 0.03 % | |
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