| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AA4CF | 889 | 29.53 % | | 1216 | 27.51 % | | 2 | C C D C C C | BG3UPA | 777 | 25.81 % | | 1036 | 23.43 % | | 3 | C C D C | AA1K | 569 | 18.90 % | | 1019 | 23.05 % | | 4 | C D C C | B4TB | 340 | 11.30 % | | 488 | 11.04 % | | 5 | C D C C C | C6AKQ | 204 | 6.78 % | | 261 | 5.90 % | | 6 | C D D C | E71A | 49 | 1.63 % | | 87 | 1.97 % | | 7 | D C D C C | 3D2NW | 35 | 1.16 % | | 55 | 1.24 % | | 8 | C D D C C | A45XR | 34 | 1.13 % | | 49 | 1.11 % | | 9 | C D C | C4W | 26 | 0.86 % | | 52 | 1.18 % | | 10 | D C D C | 3D2R | 22 | 0.73 % | | 57 | 1.29 % | | 11 | C C D C C C / D | JA5UBW/3 | 9 | 0.30 % | | 10 | 0.23 % | | 12 | D C D C C C | 2E0LMA | 8 | 0.27 % | | 13 | 0.29 % | | 13 | C C / C C D C C | DL/SP3CW | 5 | 0.17 % | | 6 | 0.14 % | | 14 | C D D C C C | E21YDP | 5 | 0.17 % | | 10 | 0.23 % | | 15 | C C D / C C D C C | EA5/DJ4UF | 3 | 0.10 % | | 8 | 0.18 % | | 16 | C C D D C | HA30S | 3 | 0.10 % | | 7 | 0.16 % | | 17 | C C D C C / C C C | OZ7DK/QRP | 3 | 0.10 % | | 3 | 0.07 % | | 18 | C D / C C D C C | V5/DJ4SO | 2 | 0.07 % | | 2 | 0.05 % | | 19 | C C D C C / D | BA1GN/8 | 2 | 0.07 % | | 3 | 0.07 % | | 20 | D C D / C C D C C | 3B8/UU5WW | 2 | 0.07 % | | 7 | 0.16 % | | 21 | C C D C C C / C | DG3LSG/P | 2 | 0.07 % | | 2 | 0.05 % | | 22 | C C / C D C C | EI/W5GN | 2 | 0.07 % | | 2 | 0.05 % | | 23 | C C D C / C C D | AH0S/KH2 | 1 | 0.03 % | | 1 | 0.02 % | | 24 | C C D / C C D C | EA8/RC5A | 1 | 0.03 % | | 1 | 0.02 % | | 25 | D C / C C D C | 4X/UU8J | 1 | 0.03 % | | 1 | 0.02 % | | 26 | C / C D D C C | F/E73CQ | 1 | 0.03 % | | 1 | 0.02 % | | 27 | D C D / C C D C | 9K2/SP4R | 1 | 0.03 % | | 1 | 0.02 % | | 28 | D C D / C C D C C C |
9M2/JE1SCJ | 1 | 0.03 % | | 1 | 0.02 % | | 29 | C C D / C C D C C C |
IK2/DL9SAS | 1 | 0.03 % | | 1 | 0.02 % | | 30 | D C C D C C | 3DA0ET | 1 | 0.03 % | | 4 | 0.09 % | | 31 | C D C C C / D | K7MOA/4 | 1 | 0.03 % | | 1 | 0.02 % | | 32 | C C C D C C | LDY2AT | 1 | 0.03 % | | 1 | 0.02 % | | 33 | C C D C C C / C C C |
EA7AAW/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 34 | C C D D D C C | PG200NL | 1 | 0.03 % | | 1 | 0.02 % | | 35 | C C D C C / C | RC9YA/P | 1 | 0.03 % | | 1 | 0.02 % | | 36 | C D D C C / C C C | S53AR/QRP | 1 | 0.03 % | | 3 | 0.07 % | | 37 | C C / C C D C | FS/WJ2O | 1 | 0.03 % | | 1 | 0.02 % | | 38 | C C D C / C D C C C |
VP2V/N3DXX | 1 | 0.03 % | | 2 | 0.05 % | | 39 | C C D C / C C C | YU0W/QRP | 1 | 0.03 % | | 1 | 0.02 % | | 40 | C D D D C | Z320G | 1 | 0.03 % | | 1 | 0.02 % | | 41 | C D / C D D C | Z6/S56A | 1 | 0.03 % | | 4 | 0.09 % | |
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