| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BD0AAI | 1875 | 33.92 % | | 3769 | 28.96 % | | 2 | C C D C C | AA1ON | 1663 | 30.09 % | | 4287 | 32.94 % | | 3 | C C D C | AA0O | 596 | 10.78 % | | 1870 | 14.37 % | | 4 | C D C C C | F1AGE | 473 | 8.56 % | | 697 | 5.36 % | | 5 | C D C C | B1HQ | 436 | 7.89 % | | 863 | 6.63 % | | 6 | C D D C | E70A | 100 | 1.81 % | | 670 | 5.15 % | | 7 | D C D C C | 3V8CB | 66 | 1.19 % | | 146 | 1.12 % | | 8 | C D D C C | A41NN | 64 | 1.16 % | | 176 | 1.35 % | | 9 | D C D C C C | 2E0AOZ | 44 | 0.80 % | | 70 | 0.54 % | | 10 | C D C | B3A | 26 | 0.47 % | | 82 | 0.63 % | | 11 | D C D C | 3Z0X | 21 | 0.38 % | | 73 | 0.56 % | | 12 | C C D C C C / C | DG0LHI/P | 20 | 0.36 % | | 26 | 0.20 % | | 13 | C C D C C / C | DC1FO/P | 15 | 0.27 % | | 23 | 0.18 % | | 14 | C D D C C C | E20NGF | 9 | 0.16 % | | 16 | 0.12 % | | 15 | C C / C C D C C C | DL/HB9DQL | 8 | 0.14 % | | 14 | 0.11 % | | 16 | C C D C C C / D | JA1CCH/1 | 7 | 0.13 % | | 10 | 0.08 % | | 17 | C D C C C / C | F4GKR/P | 7 | 0.13 % | | 16 | 0.12 % | | 18 | C C / C C D C | DL/HG0R | 7 | 0.13 % | | 17 | 0.13 % | | 19 | C C D D D C C C | OE100IIO | 7 | 0.13 % | | 11 | 0.08 % | | 20 | C C / C C D C C | DL/OZ1AA | 6 | 0.11 % | | 12 | 0.09 % | | 21 | C C D D C C C | DB25ONN | 5 | 0.09 % | | 16 | 0.12 % | | 22 | C C D C C / D | NU1AW/9 | 4 | 0.07 % | | 10 | 0.08 % | | 23 | C D C C / D | R3AR/9 | 4 | 0.07 % | | 8 | 0.06 % | | 24 | C C / C D C C | DL/K1AR | 3 | 0.05 % | | 3 | 0.02 % | | 25 | C C / C D C C C | DL/I4VEQ | 3 | 0.05 % | | 3 | 0.02 % | | 26 | C C D C / C | NF1A/M | 3 | 0.05 % | | 3 | 0.02 % | | 27 | C C D C / D | RG5A/6 | 3 | 0.05 % | | 6 | 0.05 % | | 28 | C C D D C | DU30R | 3 | 0.05 % | | 6 | 0.05 % | | 29 | C C D D D C | HF100A | 3 | 0.05 % | | 7 | 0.05 % | | 30 | C C D D D C C | DL100BY | 2 | 0.04 % | | 6 | 0.05 % | | 31 | C C D / C D C C C | KP4/K6DTT | 2 | 0.04 % | | 3 | 0.02 % | | 32 | C C D D C C | LM90HQ | 2 | 0.04 % | | 8 | 0.06 % | | 33 | C C D / C C D C C | KP2/AA1BU | 2 | 0.04 % | | 7 | 0.05 % | | 34 | C C D / C C D C C C | EA5/ON1CDL | 2 | 0.04 % | | 5 | 0.04 % | | 35 | C C D C C C / C C | DG7LAN/MM | 2 | 0.04 % | | 6 | 0.05 % | | 36 | C C D C C / C C | RA0LQ/MM | 2 | 0.04 % | | 6 | 0.05 % | | 37 | C C D C C C / C C C | EA7AAW/QRP | 2 | 0.04 % | | 3 | 0.02 % | | 38 | C C C D C C | DOK2DM | 1 | 0.02 % | | 1 | 0.01 % | | 39 | D C / C C D C | 4L/RC5A | 1 | 0.02 % | | 3 | 0.02 % | | 40 | C / C C D C C | F/PD1RP | 1 | 0.02 % | | 1 | 0.01 % | | 41 | D C D D D C | 3Z100K | 1 | 0.02 % | | 4 | 0.03 % | | 42 | D C / C D D C / C | 9A/S58Y/P | 1 | 0.02 % | | 1 | 0.01 % | | 43 | D C D C C / C C C | 9A4OP/QRP | 1 | 0.02 % | | 3 | 0.02 % | | 44 | D C D C C / C | 9A6DR/P | 1 | 0.02 % | | 2 | 0.02 % | | 45 | C / C D C C C | F/G0PZA | 1 | 0.02 % | | 1 | 0.01 % | | 46 | C C D C C C / C C D | IK2AIT/IV3 | 1 | 0.02 % | | 1 | 0.01 % | | 47 | C D D C C C C | J32FIFA | 1 | 0.02 % | | 2 | 0.02 % | | 48 | D C / C D D C | 9A/S55G | 1 | 0.02 % | | 3 | 0.02 % | | 49 | C D C C C / D | K9QVB/9 | 1 | 0.02 % | | 1 | 0.01 % | | 50 | C C D C C / C D | KH6ND/W7 | 1 | 0.02 % | | 1 | 0.01 % | | 51 | D C D C C C / C | 2E0IBU/M | 1 | 0.02 % | | 1 | 0.01 % | | 52 | C C C D C C C | CIK4XQT | 1 | 0.02 % | | 1 | 0.01 % | | 53 | C C D C C C C | DA0WRTC | 1 | 0.02 % | | 1 | 0.01 % | | 54 | C C D D C C C C | LM90NRRL | 1 | 0.02 % | | 6 | 0.05 % | | 55 | C D C C / C C D | N4DL/VY2 | 1 | 0.02 % | | 1 | 0.01 % | | 56 | D C / C C D C C | 4X/AG4WY | 1 | 0.02 % | | 1 | 0.01 % | | 57 | C D C C C C | G7SSSE | 1 | 0.02 % | | 1 | 0.01 % | | 58 | D C / C D D C C | 9A/S57KM | 1 | 0.02 % | | 2 | 0.02 % | | 59 | C / C D C C C / C | I/G4BJM/M | 1 | 0.02 % | | 1 | 0.01 % | | 60 | C / C C D C C C | I/OE1MSW | 1 | 0.02 % | | 1 | 0.01 % | | 61 | C D C C C C C D C C C | I4XNNIK2WWE | 1 | 0.02 % | | 1 | 0.01 % | | 62 | C D D C C / C C | S51TA/MM | 1 | 0.02 % | | 4 | 0.03 % | | 63 | C C / C C D C C / C | SM/DO7EN/P | 1 | 0.02 % | | 1 | 0.01 % | | 64 | C C D / C D D C C | SV9/S55OO | 1 | 0.02 % | | 4 | 0.03 % | | 65 | C D C C C / C C D | W6PNG/VY2 | 1 | 0.02 % | | 2 | 0.02 % | | 66 | C C D C C / C C C | YU1LM/QRP | 1 | 0.02 % | | 5 | 0.04 % | | 67 | C D D C / C C C | Z35M/QRP | 1 | 0.02 % | | 2 | 0.02 % | |
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