| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C C | BA1SLA | 1668 | 34.41 % | | 2349 | 29.32 % | | 2 | C C D C C | AA0FO | 1198 | 24.72 % | | 1911 | 23.85 % | | 3 | C C D C | AA3S | 806 | 16.63 % | | 1670 | 20.84 % | | 4 | C D C C C | F1DJE | 521 | 10.75 % | | 782 | 9.76 % | | 5 | C D C C | E6AQ | 316 | 6.52 % | | 580 | 7.24 % | | 6 | C D C | B0A | 49 | 1.01 % | | 108 | 1.35 % | | 7 | D C D C C | 3B9KW | 48 | 0.99 % | | 66 | 0.82 % | | 8 | D C D C C C | 2E0CVN | 47 | 0.97 % | | 65 | 0.81 % | | 9 | C D D C | A44A | 46 | 0.95 % | | 101 | 1.26 % | | 10 | C D D C C | A41DV | 44 | 0.91 % | | 70 | 0.87 % | | 11 | D C D C | 3W9A | 35 | 0.72 % | | 76 | 0.95 % | | 12 | C D D C C C | E20HHK | 9 | 0.19 % | | 12 | 0.15 % | | 13 | C C D C C C / C | DG1DCP/P | 9 | 0.19 % | | 13 | 0.16 % | | 14 | C C D D C C C | DK50FFW | 4 | 0.08 % | | 4 | 0.05 % | | 15 | C C D C C / C | DB9LG/P | 4 | 0.08 % | | 5 | 0.06 % | | 16 | C D C C C / C | F4JAW/P | 4 | 0.08 % | | 5 | 0.06 % | | 17 | C C D C C C / D | JL3VUL/3 | 3 | 0.06 % | | 6 | 0.07 % | | 18 | C C D D C C | HA55BA | 3 | 0.06 % | | 3 | 0.04 % | | 19 | C C D C C / C C C | OZ5TO/QRP | 3 | 0.06 % | | 5 | 0.06 % | | 20 | C C D / C C D C C | EA5/DB1WR | 2 | 0.04 % | | 5 | 0.06 % | | 21 | C C D C C / D | RD7LB/3 | 2 | 0.04 % | | 4 | 0.05 % | | 22 | C C / C C D C C C | ON/PA0NUL | 2 | 0.04 % | | 2 | 0.02 % | | 23 | D C / C C D C C C | 9A/IZ3NVR | 2 | 0.04 % | | 2 | 0.02 % | | 24 | C C D / C C D C C C | EA3/DC1AVL | 2 | 0.04 % | | 3 | 0.04 % | | 25 | C C D C C / C D | AH6FX/W4 | 1 | 0.02 % | | 1 | 0.01 % | | 26 | D C D C C C / C C C | 2W0NLH/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 27 | D C D | 7Q1 | 1 | 0.02 % | | 2 | 0.02 % | | 28 | D C / C D C C | 9A/W3WM | 1 | 0.02 % | | 1 | 0.01 % | | 29 | C C D C C C C | IR8RCAM | 1 | 0.02 % | | 1 | 0.01 % | | 30 | D C D C C C / D | 7K1MAG/2 | 1 | 0.02 % | | 1 | 0.01 % | | 31 | C D C C C C | G6ZXVL | 1 | 0.02 % | | 1 | 0.01 % | | 32 | C C D C / C D | KH7X/W7 | 1 | 0.02 % | | 1 | 0.01 % | | 33 | C C D D D C C C | EM100WJZ | 1 | 0.02 % | | 1 | 0.01 % | | 34 | C / C C D C C | M/VA6UK | 1 | 0.02 % | | 1 | 0.01 % | | 35 | C D C C C / C C D | N2KHH/VY2 | 1 | 0.02 % | | 2 | 0.02 % | | 36 | C C D D C | OG16M | 1 | 0.02 % | | 1 | 0.01 % | | 37 | C C / C D C C C | OH/F4ETG | 1 | 0.02 % | | 2 | 0.02 % | | 38 | C C D / C C D C | IH9/OK1M | 1 | 0.02 % | | 1 | 0.01 % | | 39 | C C D C C C / C C | ON4BAX/SP | 1 | 0.02 % | | 1 | 0.01 % | | 40 | C C D C C C / C C C | IZ5CUI/QRP | 1 | 0.02 % | | 1 | 0.01 % | | 41 | C C D D C C C C | PA80SODS | 1 | 0.02 % | | 1 | 0.01 % | | 42 | C D C C / D | R9OM/6 | 1 | 0.02 % | | 1 | 0.01 % | | 43 | C C / C C D C C | LA/US1PM | 1 | 0.02 % | | 1 | 0.01 % | | 44 | C D D D C C C | S570CST | 1 | 0.02 % | | 2 | 0.02 % | |
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