| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA0AW | 859 | 26.98 % | | 1159 | 25.78 % | | 2 | C C D C C C | BA7LOK | 795 | 24.97 % | | 1011 | 22.49 % | | 3 | C C D C | AA3B | 764 | 23.99 % | | 1186 | 26.38 % | | 4 | C D C C | D4DX | 286 | 8.98 % | | 378 | 8.41 % | | 5 | C D C C C | F1FCA | 214 | 6.72 % | | 258 | 5.74 % | | 6 | C D D C | A52A | 52 | 1.63 % | | 74 | 1.65 % | | 7 | C D D C C | A45CW | 36 | 1.13 % | | 48 | 1.07 % | | 8 | D C D C C | 3D0GY | 34 | 1.07 % | | 50 | 1.11 % | | 9 | C D C | B1Z | 31 | 0.97 % | | 58 | 1.29 % | | 10 | D C D C | 3W9A | 27 | 0.85 % | | 42 | 0.93 % | | 11 | D C D C C C | 2E0CEY | 11 | 0.35 % | | 13 | 0.29 % | | 12 | C C D D C C C | HG75MAV | 11 | 0.35 % | | 14 | 0.31 % | | 13 | C D D C C C | E29TGW | 6 | 0.19 % | | 6 | 0.13 % | | 14 | C C D / C C D C C | EA5/UW1WA | 6 | 0.19 % | | 8 | 0.18 % | | 15 | C C / C C D C C | ER/UR7FM | 5 | 0.16 % | | 6 | 0.13 % | | 16 | C C D D C C | HG40CW | 5 | 0.16 % | | 6 | 0.13 % | | 17 | C C D D D C C C C | CN100IARU | 4 | 0.13 % | | 8 | 0.18 % | | 18 | C C D D D D C | DL2025B | 3 | 0.09 % | | 3 | 0.07 % | | 19 | C C D D D C | OL100A | 2 | 0.06 % | | 2 | 0.04 % | | 20 | C / C C D C C C | F/DL2NBU | 2 | 0.06 % | | 3 | 0.07 % | | 21 | C C D C C C / C C C | BH4TYL/QRP | 2 | 0.06 % | | 2 | 0.04 % | | 22 | C D D D C | S560R | 2 | 0.06 % | | 5 | 0.11 % | | 23 | C C D C C C / C | DL3NAA/P | 2 | 0.06 % | | 2 | 0.04 % | | 24 | C C D C C C C | HG6HDUT | 2 | 0.06 % | | 2 | 0.04 % | | 25 | C C D D D C C C | OL730PLZ | 2 | 0.06 % | | 4 | 0.09 % | | 26 | C C D C C / C C C | EA1GT/QRP | 2 | 0.06 % | | 6 | 0.13 % | | 27 | D C D C C C C | 8K3EXPO | 1 | 0.03 % | | 1 | 0.02 % | | 28 | D C D D C | 9A73A | 1 | 0.03 % | | 1 | 0.02 % | | 29 | C C D / C D C C | EA3/N3CZ | 1 | 0.03 % | | 1 | 0.02 % | | 30 | C C D D D C C | DM800KM | 1 | 0.03 % | | 2 | 0.04 % | | 31 | C / C D D C | F/E72T | 1 | 0.03 % | | 1 | 0.02 % | | 32 | D C / C D C C | 9A/W3WM | 1 | 0.03 % | | 1 | 0.02 % | | 33 | C C D C C C / C C D | KI6RRN/KL7 | 1 | 0.03 % | | 1 | 0.02 % | | 34 | C C / C D C C | LX/N9SM | 1 | 0.03 % | | 2 | 0.04 % | | 35 | C D C C C / C | M0RYB/P | 1 | 0.03 % | | 3 | 0.07 % | | 36 | C C / C C D C / C | MM/LY3X/M | 1 | 0.03 % | | 2 | 0.04 % | | 37 | C C D D C | OG73X | 1 | 0.03 % | | 2 | 0.04 % | | 38 | C C / C D C C C | OH/M0CFW | 1 | 0.03 % | | 3 | 0.07 % | | 39 | C C D D C C C C C | HG25TISZA | 1 | 0.03 % | | 2 | 0.04 % | | 40 | D C D D D C | 9A925T | 1 | 0.03 % | | 2 | 0.04 % | | 41 | C C D C / C C | RD1A/MM | 1 | 0.03 % | | 1 | 0.02 % | | 42 | C D / C D C C C | S5/M0MPM | 1 | 0.03 % | | 3 | 0.07 % | | 43 | C C D / C C D C C C | IF9/IT9PPG | 1 | 0.03 % | | 1 | 0.02 % | | 44 | C D D D C C | S590AA | 1 | 0.03 % | | 1 | 0.02 % | | 45 | C D / C C D C C C | Z3/SV1DAY | 1 | 0.03 % | | 1 | 0.02 % | |
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