| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1ON | 848 | 34.30 % | | 1551 | 35.32 % | | 2 | C C D C C C | CS7AMH | 607 | 24.56 % | | 885 | 20.15 % | | 3 | C C D C | AA1K | 326 | 13.19 % | | 654 | 14.89 % | | 4 | C D C C | B1HQ | 285 | 11.53 % | | 454 | 10.34 % | | 5 | C D C C C | F1RAF | 153 | 6.19 % | | 220 | 5.01 % | | 6 | C D D C | E70A | 92 | 3.72 % | | 338 | 7.70 % | | 7 | D C D C C | 4L7AA | 33 | 1.33 % | | 61 | 1.39 % | | 8 | C D D C C | E73RB | 22 | 0.89 % | | 44 | 1.00 % | | 9 | D C D C | 3Z0X | 19 | 0.77 % | | 31 | 0.71 % | | 10 | C D C | C4W | 15 | 0.61 % | | 44 | 1.00 % | | 11 | D C D C C C | 2W0WOD | 9 | 0.36 % | | 10 | 0.23 % | | 12 | C C / C D C C | DL/K1AR | 8 | 0.32 % | | 16 | 0.36 % | | 13 | C C D C C / C | DJ4MM/P | 7 | 0.28 % | | 10 | 0.23 % | | 14 | C C / C C D C | DL/HG0R | 4 | 0.16 % | | 7 | 0.16 % | | 15 | C C / C C D C C C | DL/HB9DQL | 4 | 0.16 % | | 5 | 0.11 % | | 16 | C C / C C D C C | DL/OZ1AA | 3 | 0.12 % | | 6 | 0.14 % | | 17 | C C D D D C C C | OE100RAD | 3 | 0.12 % | | 4 | 0.09 % | | 18 | C D C C C / C | F4GKR/P | 3 | 0.12 % | | 4 | 0.09 % | | 19 | C C D C C C / C | DL2KUH/P | 3 | 0.12 % | | 4 | 0.09 % | | 20 | C C D C C C / C C | DG7LAN/MM | 2 | 0.08 % | | 3 | 0.07 % | | 21 | C C D D C C C | DB25ONN | 2 | 0.08 % | | 2 | 0.05 % | | 22 | C C D D C | OG55W | 2 | 0.08 % | | 9 | 0.20 % | | 23 | C C D / C C D C C | EA6/DK5ON | 2 | 0.08 % | | 2 | 0.05 % | | 24 | C D C C / D | W1AW/4 | 2 | 0.08 % | | 4 | 0.09 % | | 25 | D C / C C D C | 4L/RC5A | 1 | 0.04 % | | 1 | 0.02 % | | 26 | D C / C D D C C | 9A/S57KM | 1 | 0.04 % | | 2 | 0.05 % | | 27 | C D / C C D C C | I0/YO3XX | 1 | 0.04 % | | 1 | 0.02 % | | 28 | C D D C C C C | J32FIFA | 1 | 0.04 % | | 1 | 0.02 % | | 29 | C C D D C C C C | LM90NRRL | 1 | 0.04 % | | 1 | 0.02 % | | 30 | C C D C C / D | NU1AW/9 | 1 | 0.04 % | | 3 | 0.07 % | | 31 | C D C C / C | F5GP/P | 1 | 0.04 % | | 1 | 0.02 % | | 32 | C C D C C C C C | OE1OOSPW | 1 | 0.04 % | | 1 | 0.02 % | | 33 | C / C D C C C | F/G0PZA | 1 | 0.04 % | | 1 | 0.02 % | | 34 | C C D C / D | RT9T/3 | 1 | 0.04 % | | 1 | 0.02 % | | 35 | C D D C C / C C | S51TA/MM | 1 | 0.04 % | | 2 | 0.05 % | | 36 | C D D C C C | S57NML | 1 | 0.04 % | | 1 | 0.02 % | | 37 | C C D C / C | SE5Z/P | 1 | 0.04 % | | 1 | 0.02 % | | 38 | C C / C D C C C | SP/I4ZSQ | 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 C D | UD8A0 | 1 | 0.04 % | | 1 | 0.02 % | | 41 | C C D C C C C | DA0WRTC | 1 | 0.04 % | | 1 | 0.02 % | | 42 | C C D C C / C C | YL3IZ/MM | 1 | 0.04 % | | 2 | 0.05 % | |
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