| Callsign structure # | Callsign structure, C - char, D - digit | Example | Callsigns | % | QSOs | % |
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1 | C C D C C | AB3SX | 825 | 33.37 % | | 1114 | 32.48 % | | 2 | C C D C C C | CM3EFM | 661 | 26.74 % | | 871 | 25.39 % | | 3 | C C D C | AH2R | 484 | 19.58 % | | 773 | 22.54 % | | 4 | C D C C C | C6AQQ | 189 | 7.65 % | | 243 | 7.08 % | | 5 | C D C C | E7CW | 94 | 3.80 % | | 117 | 3.41 % | | 6 | C D D C C | D41CV | 46 | 1.86 % | | 62 | 1.81 % | | 7 | C D D C | A44A | 46 | 1.86 % | | 69 | 2.01 % | | 8 | D C D C C | 4O7CC | 33 | 1.33 % | | 40 | 1.17 % | | 9 | C D C | E6S | 28 | 1.13 % | | 46 | 1.34 % | | 10 | D C D C | 3Z0X | 25 | 1.01 % | | 44 | 1.28 % | | 11 | C D D C C C | S53AJK | 6 | 0.24 % | | 8 | 0.23 % | | 12 | C C D D D C | HF100N | 5 | 0.20 % | | 7 | 0.20 % | | 13 | D C D C C C | 2E0CVN | 5 | 0.20 % | | 5 | 0.15 % | | 14 | C C D D C C | HA90AM | 2 | 0.08 % | | 2 | 0.06 % | | 15 | C C D D D C C C | OK100BOB | 2 | 0.08 % | | 2 | 0.06 % | | 16 | C C D / C C D C C | EA8/DK5AN | 2 | 0.08 % | | 2 | 0.06 % | | 17 | C C D D C | OG60F | 2 | 0.08 % | | 3 | 0.09 % | | 18 | D C D / C C D C C | 5Z4/LZ4NM | 2 | 0.08 % | | 4 | 0.12 % | | 19 | C C / C C D C C | UT/HA5UX | 2 | 0.08 % | | 2 | 0.06 % | | 20 | D C D D D C | 3Z100I | 1 | 0.04 % | | 2 | 0.06 % | | 21 | D C D D C | 4U73B | 1 | 0.04 % | | 1 | 0.03 % | | 22 | C C D / C D C C C | CT7/F6HBR | 1 | 0.04 % | | 1 | 0.03 % | | 23 | C C D / C C D C | IH9/OL3R | 1 | 0.04 % | | 1 | 0.03 % | | 24 | C D C C / C C D | N0UB/KP2 | 1 | 0.04 % | | 1 | 0.03 % | | 25 | C C C D C | HIH3A | 1 | 0.04 % | | 1 | 0.03 % | | 26 | C C / C D C C C | FG/F6ARC | 1 | 0.04 % | | 1 | 0.03 % | | 27 | C C D / C D C C | PJ7/K0CD | 1 | 0.04 % | | 1 | 0.03 % | | 28 | C / C C D C C | F/OM2ZA | 1 | 0.04 % | | 1 | 0.03 % | | 29 | C C D D C C C | DJ70WAE | 1 | 0.04 % | | 2 | 0.06 % | | 30 | C C D C C C / C C | UW5EJX/MM | 1 | 0.04 % | | 1 | 0.03 % | | 31 | C C D C / C C D C | VP2V/WJ2O | 1 | 0.04 % | | 2 | 0.06 % | | 32 | C C / C C D C | ZA/OU2I | 1 | 0.04 % | | 1 | 0.03 % | |
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