| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA1SU | 759 | 30.58 % | | 1051 | 30.24 % | | 2 | C C D C C C | BD1IIJ | 611 | 24.62 % | | 810 | 23.31 % | | 3 | C C D C | AA3B | 546 | 22.00 % | | 857 | 24.66 % | | 4 | C D C C | D2QV | 193 | 7.78 % | | 268 | 7.71 % | | 5 | C D C C C | F1IWH | 133 | 5.36 % | | 166 | 4.78 % | | 6 | C D D C | E71A | 42 | 1.69 % | | 56 | 1.61 % | | 7 | C D D C C | A45WH | 31 | 1.25 % | | 44 | 1.27 % | | 8 | D C D C C | 3V8BB | 30 | 1.21 % | | 39 | 1.12 % | | 9 | D C D C | 3W1T | 25 | 1.01 % | | 34 | 0.98 % | | 10 | C D C | B1W | 18 | 0.73 % | | 31 | 0.89 % | | 11 | D C D C C C | 2E0LMA | 10 | 0.40 % | | 13 | 0.37 % | | 12 | C C D D C C C | DM50PCK | 5 | 0.20 % | | 6 | 0.17 % | | 13 | C C D D C | HA30M | 5 | 0.20 % | | 7 | 0.20 % | | 14 | C D D C C C | E21YDP | 5 | 0.20 % | | 5 | 0.14 % | | 15 | C C D D C C | GX45RC | 5 | 0.20 % | | 6 | 0.17 % | | 16 | C C D C C C / D | DS4EOI/2 | 4 | 0.16 % | | 4 | 0.12 % | | 17 | C C D C C / C C C | EA1GT/QRP | 4 | 0.16 % | | 6 | 0.17 % | | 18 | C C D D D C C | DR800BI | 4 | 0.16 % | | 8 | 0.23 % | | 19 | C C D D C C C C | DM20KIDS | 3 | 0.12 % | | 4 | 0.12 % | | 20 | C C D / C C D C | EA8/RA1A | 3 | 0.12 % | | 3 | 0.09 % | | 21 | C C D / C C D C C C |
IF9/IT9PPG | 3 | 0.12 % | | 3 | 0.09 % | | 22 | C C D C C C / C C C |
EF7AAW/QRP | 3 | 0.12 % | | 3 | 0.09 % | | 23 | C C D C C C / C | DL7USW/P | 3 | 0.12 % | | 4 | 0.12 % | | 24 | C C D D D C C C | DM200TSV | 3 | 0.12 % | | 3 | 0.09 % | | 25 | C C / C C D C C | DL/KU1CW | 2 | 0.08 % | | 4 | 0.12 % | | 26 | C C D D D D C | YL2014H | 2 | 0.08 % | | 2 | 0.06 % | | 27 | C C / C D C C C | JW/W2NAF | 2 | 0.08 % | | 2 | 0.06 % | | 28 | C C D / C D C C | CT9/R9DX | 2 | 0.08 % | | 4 | 0.12 % | | 29 | C C / C D C C | JW/K8GU | 2 | 0.08 % | | 3 | 0.09 % | | 30 | D C D / C C D C | 9K2/SP4R | 2 | 0.08 % | | 2 | 0.06 % | | 31 | D C D C C / C C C | 7Z1SJ/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 32 | D C D D C C C | 3Z50AYP | 1 | 0.04 % | | 3 | 0.09 % | | 33 | D C D C C C / D | 7N2JZT/1 | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C / C D D C C | F/E73CQ | 1 | 0.04 % | | 1 | 0.03 % | | 35 | D C D / C C D C C C |
9M2/JE1SCJ | 1 | 0.04 % | | 1 | 0.03 % | | 36 | C C D C C C C | II5COTA | 1 | 0.04 % | | 1 | 0.03 % | | 37 | C C D C C / D | IQ4FE/2 | 1 | 0.04 % | | 1 | 0.03 % | | 38 | D C / C D D C | 9A/S53V | 1 | 0.04 % | | 1 | 0.03 % | | 39 | D C D D C C | 9A15BB | 1 | 0.04 % | | 2 | 0.06 % | | 40 | C D C C C / D | K7MXA/4 | 1 | 0.04 % | | 1 | 0.03 % | | 41 | C C / C C D C | LA/LY5G | 1 | 0.04 % | | 1 | 0.03 % | | 42 | C C D D D D C C | LZ2014KM | 1 | 0.04 % | | 1 | 0.03 % | | 43 | C D / C D C C | P4/K1KG | 1 | 0.04 % | | 1 | 0.03 % | | 44 | C C D C C / C C | RA0LX/MM | 1 | 0.04 % | | 1 | 0.03 % | | 45 | C C D C / D | RN3K/3 | 1 | 0.04 % | | 1 | 0.03 % | | 46 | C C D C C / C | RZ4AZ/P | 1 | 0.04 % | | 1 | 0.03 % | | 47 | C D D D D C | S5660R | 1 | 0.04 % | | 1 | 0.03 % | | 48 | C C D D D C | SN777E | 1 | 0.04 % | | 2 | 0.06 % | | 49 | C C D / C D C C / C |
SV9/W1NN/P | 1 | 0.04 % | | 2 | 0.06 % | | 50 | C C D / C C D C C | VP9/UU5WW | 1 | 0.04 % | | 1 | 0.03 % | | 51 | C D C C / C C D | W1UE/HR9 | 1 | 0.04 % | | 1 | 0.03 % | | 52 | C D D D C C C | E750EBL | 1 | 0.04 % | | 1 | 0.03 % | |
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