| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | CN8AMA | 1100 | 41.14 % | | 1473 | 40.53 % | | 2 | C C D C C | AA3GZ | 804 | 30.07 % | | 1160 | 31.92 % | | 3 | C D C C C | F1ABL | 290 | 10.85 % | | 352 | 9.69 % | | 4 | C C D C | AK1P | 189 | 7.07 % | | 245 | 6.74 % | | 5 | C D C C | F2YT | 93 | 3.48 % | | 137 | 3.77 % | | 6 | D C D C C C | 2E0BPP | 26 | 0.97 % | | 27 | 0.74 % | | 7 | D C D C C | 4L1BR | 25 | 0.93 % | | 31 | 0.85 % | | 8 | C D D C C | A61EK | 17 | 0.64 % | | 27 | 0.74 % | | 9 | C C D D C C C C | CN90IARU | 15 | 0.56 % | | 36 | 0.99 % | | 10 | C D D C | E72U | 10 | 0.37 % | | 13 | 0.36 % | | 11 | C C D C C C C | ES9YOTA | 8 | 0.30 % | | 12 | 0.33 % | | 12 | C C D C C C / D | IK4WKU/4 | 6 | 0.22 % | | 7 | 0.19 % | | 13 | C C C C | EGTR | 6 | 0.22 % | | 6 | 0.17 % | | 14 | C C D C C / C | DK4AN/M | 5 | 0.19 % | | 6 | 0.17 % | | 15 | C C D C C C / C | CT1ELZ/N | 5 | 0.19 % | | 5 | 0.14 % | | 16 | C D D C C C | E73ESP | 5 | 0.19 % | | 5 | 0.14 % | | 17 | C C D / C C D C C C |
EA8/IK1PMR | 4 | 0.15 % | | 6 | 0.17 % | | 18 | C C D C C / C C C | DJ9WJ/QRP | 4 | 0.15 % | | 5 | 0.14 % | | 19 | D C D C | 3Z9K | 4 | 0.15 % | | 4 | 0.11 % | | 20 | C C D D C C | PH65PH | 4 | 0.15 % | | 5 | 0.14 % | | 21 | D C D D C C C C | 3Z35RTTY | 4 | 0.15 % | | 4 | 0.11 % | | 22 | C D D D C C / D | R130GS/6 | 4 | 0.15 % | | 6 | 0.17 % | | 23 | C C D D C C C | EM90KPI | 4 | 0.15 % | | 5 | 0.14 % | | 24 | C C D C C / D | RZ3BA/1 | 3 | 0.11 % | | 3 | 0.08 % | | 25 | C C D C C C / C C C |
HB9FWB/QRP | 3 | 0.11 % | | 3 | 0.08 % | | 26 | C D C C / C | R3GD/P | 2 | 0.07 % | | 2 | 0.06 % | | 27 | C C D D C | OZ11A | 2 | 0.07 % | | 6 | 0.17 % | | 28 | C C C | FIY | 2 | 0.07 % | | 2 | 0.06 % | | 29 | C D C | G2U | 2 | 0.07 % | | 2 | 0.06 % | | 30 | C D D C C C / D | R18KDR/3 | 2 | 0.07 % | | 2 | 0.06 % | | 31 | C D D C C / D D | A91ND/45 | 1 | 0.04 % | | 1 | 0.03 % | | 32 | C D C C / C C C | F2NY/QRP | 1 | 0.04 % | | 1 | 0.03 % | | 33 | C C D D D D C C | DL1965WH | 1 | 0.04 % | | 1 | 0.03 % | | 34 | C D D C / D D | A60A/44 | 1 | 0.04 % | | 1 | 0.03 % | | 35 | C C / C C D C C | EI/SQ9UM | 1 | 0.04 % | | 1 | 0.03 % | | 36 | C C D / C C D C C | EA8/DK5AN | 1 | 0.04 % | | 2 | 0.06 % | | 37 | C C D C D D C C C C |
LZ2O15YOTA | 1 | 0.04 % | | 1 | 0.03 % | | 38 | C C D D D C C | LZ362MT | 1 | 0.04 % | | 1 | 0.03 % | | 39 | C C D D D D C C C C C C
OM2015TITANIC | 1 | 0.04 % | | 3 | 0.08 % | | | 40 | D C D D C | 9A15P | 1 | 0.04 % | | 1 | 0.03 % | | 41 | D C D C C / C | 9H1JQ/P | 1 | 0.04 % | | 1 | 0.03 % | | 42 | D C D D C C C | 3Z15XMS | 1 | 0.04 % | | 2 | 0.06 % | | 43 | C C D D D C C C C | CQ890IARU | 1 | 0.04 % | | 1 | 0.03 % | | 44 | C D D D D C C | R1941OM | 1 | 0.04 % | | 1 | 0.03 % | | 45 | C D D D D C | R2015B | 1 | 0.04 % | | 2 | 0.06 % | | 46 | D C / C D C C | 4X/R1CC | 1 | 0.04 % | | 2 | 0.06 % | | 47 | C D D C C C C | R90IARU | 1 | 0.04 % | | 1 | 0.03 % | | 48 | C C D C / D | RT9K/6 | 1 | 0.04 % | | 2 | 0.06 % | | 49 | C C D D D D C C C C |
LZ2015YOTA | 1 | 0.04 % | | 3 | 0.08 % | | 50 | C C / C C D C C C / C | SM/HB9EDH/P | 1 | 0.04 % | | 1 | 0.03 % | | 51 | C C D D D C C C | SP500YFF | 1 | 0.04 % | | 3 | 0.08 % | | 52 | C C D C C C C C | SX9OIARU | 1 | 0.04 % | | 1 | 0.03 % | | 53 | C C D C / C | UB5O/M | 1 | 0.04 % | | 1 | 0.03 % | | 54 | C D / C C D C C | V5/DK1CE | 1 | 0.04 % | | 1 | 0.03 % | | 55 | C C / C D D C | YU/S56A | 1 | 0.04 % | | 1 | 0.03 % | | 56 | C D D D C C | Z362MT | 1 | 0.04 % | | 1 | 0.03 % | |
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